CN113584381A - High-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy and electroslag remelting method thereof - Google Patents

High-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy and electroslag remelting method thereof Download PDF

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CN113584381A
CN113584381A CN202110759502.2A CN202110759502A CN113584381A CN 113584381 A CN113584381 A CN 113584381A CN 202110759502 A CN202110759502 A CN 202110759502A CN 113584381 A CN113584381 A CN 113584381A
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刘璇
黄国平
何曲波
刘海定
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Chongqing Materials Research Institute Co Ltd
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Abstract

The invention relates to the field of metallurgy, in particular to a high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy and an electroslag remelting method thereof, when the environment temperature of the prepared high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy is minus 60 ℃, the low-temperature impact power is more than or equal to 61J, the room-temperature tensile strength is more than or equal to 1030Mpa, the yield strength is more than or equal to 860Mpa, the elongation is more than or equal to 19%, the reduction of area is more than or equal to 25%, the Rockwell hardness is 30-40 HRC, the grain size is more than or equal to 2.5 grade, the structure is uniform and compact, the sigma phase, LAVES and other topologically close-spaced brittle phases cannot be separated out in the structure, the later-stage thermal deformation is facilitated, cracks are not easy to generate in the thermal processing process of the alloy, the yield of the alloy in the thermal processing process is greatly improved, especially for large-size bar products with the diameter of more than 300mm, the segregation degree of chemical components of an electroslag ingot is well controlled, the forging performance is excellent.

Description

High-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy and electroslag remelting method thereof
Technical Field
The invention relates to the field of metallurgy, in particular to a high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy and an electroslag remelting method thereof.
Background
Nickel-based alloys such as MonelK-500, Inconel690 and UNS718 are the mainstream manufacturing materials of equipment and components which are currently applied to various corrosive environments.
The nickel-based alloy has excellent properties, but the manufacturing cost is greatly influenced by the market price of the raw material nickel because the nickel content is high. Particularly, since 2020, the price of raw materials fluctuates sharply, and the rising amplitude of nickel price in 2021 reaches more than 30%, which has a great impact on the cost control of alloy production enterprises. In order to control the manufacturing cost of the nickel-based alloy with excellent performance and improve the market risk resistance of enterprises, some special alloy manufacturing enterprises in developed countries such as: baker Hughes, Special Metals and other companies have developed corrosion-resistant alloys with low nickel content for various corrosion environments such as petroleum, the manufacturing cost of the nickel-based alloy is greatly reduced by adding cheaper alloy elements to replace part of nickel, and the mechanical property of the nickel-based alloy manufactured according to the method can be similar to that of UNS718, so that the nickel-based alloy has considerable market application prospect.
The high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy is originally designed to have low nickel content (namely, the nickel content is 46-49%), but needs to keep good material mechanical properties, and has good corrosion resistance and mechanical properties only through reasonable matching of alloy elements such as Nb, Cr, Mo, Cu and the like. Meanwhile, because the content of nickel in the alloy is low, the forging range in the hot working range is very narrow, and in order to improve the hot working performance of the alloy and ensure the actual producibility of the alloy, a small amount of microalloy elements are required to be added to improve the hot working performance of the alloy. After forging, solid solution and aging treatment, the alloy can obtain excellent comprehensive mechanical properties close to the performance of UNS718 alloy.
The standard compositions of the commonly used corrosion resistant alloys UNS718 and Inconel690 are shown in Table 1, where the mechanical properties of UNS718 are tensile strength RmThe lowest is 820MPa, and the highest can reach about 1400 MPa; and Inconel690 alloy has the lowest tensile strength RmNot less than 580MPa, and the highest can reach 700 MPa.
TABLE 1
Figure BDA0003148751820000021
At present, the research on the replacement of traditional UNS718, Inconel690 and MonelK-500 materials by the high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy is a new guide for the energy and petroleum industry market.
However, because a large amount of Nb and Cu are added to the high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy, and Nb and Cu are strong segregation elements in the electroslag remelting process, macro segregation is easily caused, and cracking is caused in the later hot working process. The factors are not beneficial to later-stage thermal deformation, cracks are easy to generate in the later-stage hot processing process, the yield in the hot processing process is seriously reduced, particularly for large-size bar products with the diameter larger than 300mm, if the chemical composition segregation degree of an electroslag ingot cannot be controlled by an electroslag process, the generated macrosegregation cannot be obviously improved by subsequent diffusion annealing and other processes, and the forging performance is poor.
Disclosure of Invention
The invention aims to provide a high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion-resistant alloy and an electroslag remelting method thereof aiming at the corresponding defects of the prior art, the prepared alloy has uniform and compact structure, cannot precipitate sigma phase, LAVES and other topologically close brittle phases in the structure, is beneficial to later-stage thermal deformation, is not easy to generate cracks in the hot processing process of the alloy, greatly improves the yield of the alloy in the hot processing process, and particularly aims at large-size bar products with the diameter of more than 300mm, the chemical composition segregation degree of an electroslag ingot is well controlled, and the forging performance is excellent.
The purpose of the invention is realized by adopting the following scheme: a high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy comprises the following components in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.5 percent of Mn, less than or equal to 23 percent of Cr more than or equal to 18 percent, less than or equal to 49 percent of Ni more than or equal to 46 percent, less than or equal to 4 percent of Mo more than or equal to 2.8 percent, less than or equal to 4 percent of Nb more than or equal to 2.8 percent, less than or equal to 3 percent of Cu more than or equal to 1.5 percent, less than or equal to 3 percent of Ti more than or equal to 1 percent, less than or equal to 0.5 percent of Al more than or equal to 0.15 percent, less than or equal to 0.005 percent of B, less than or equal to 0.15 percent of Zr, and the balance of Fe.
Preferably, the alloy comprises the following components in percentage by weight: c is more than or equal to 0.012 percent and less than or equal to 0.023 percent, Si is more than or equal to 0.232 percent and less than or equal to 0.182 percent, Mn is more than or equal to 0.496 percent and less than or equal to 0.472 percent, Cr is more than or equal to 21.98 percent and less than or equal to 21.71 percent and less than or equal to 48.46 percent, Ni is more than or equal to 47.11 percent and less than or equal to 48.46 percent, Mo is more than or equal to 3.41 percent and less than or equal to 3.75 percent, Nb is more than or equal to 3.06 percent and less than or equal to 3.97 percent, Cu is more than or equal to 1.88 percent and less than or equal to 2.06 percent, Ti is more than or equal to 1.98 percent and less than or equal to 1.98 percent, Al is more than or equal to 0.424 percent and less than or equal to 0.0036 percent and less than or equal to 0.0041 percent, Zr is more than or equal to 0.15 percent and the balance is Fe.
The high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion-resistant alloy comprises the following components in percentage by mass: c + Si + Mn is less than 1 percent.
An electroslag remelting method for high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion resistant alloy comprises the following steps:
1) vacuum melting and casting the alloy raw material into a round bar, and finishing to obtain a remelting electrode bar for high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy electroslag remelting;
the round bar first needs surface sanding to remove the scale and then is finished.
The alloy comprises the following raw materials in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.6 percent of Mn, less than or equal to 22 percent of Cr which is more than or equal to 17 percent, less than or equal to 49 percent of Ni which is more than or equal to 46 percent, less than or equal to 5 percent of Mo which is more than or equal to 2.8 percent, less than or equal to 5 percent of Nb which is more than or equal to 2.8 percent, less than or equal to 3 percent of Cu which is more than or equal to 1.5 percent, less than or equal to 3 percent of Ti which is more than or equal to 0.5 percent, less than or equal to 0.7 percent of Al which is more than or equal to 0.15 percent, less than or equal to 0.005 percent of B, less than or equal to 0.2 percent of Zr, and the balance of Fe;
preferably, the alloy raw materials comprise the following components in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.46 percent of Mn, less than or equal to 23 percent of Cr which is more than or equal to 18 percent, less than or equal to 49 percent of Ni which is more than or equal to 47 percent, less than or equal to 4 percent of Mo which is more than or equal to 3 percent, less than or equal to 4 percent of Nb which is more than or equal to 3 percent, less than or equal to 3 percent of Cu which is more than or equal to 1.5 percent, less than or equal to 3 percent of Ti which is more than or equal to 1 percent, less than or equal to 0.5 percent of Al which is more than or equal to 0.3 percent, less than or equal to 0.005 percent of B, less than or equal to 0.15 percent of Zr which is more than or equal to 0.05 percent, and the balance of Fe.
The content of boron in the remelting electrode rod is less than or equal to 0.004 percent, and the content of zirconium is less than or equal to 0.12 percent.
2) Taking the components of the slag, fully and uniformly mixing, baking at 800 ℃ for not less than 3h, and carrying out arc starting and slag melting;
the slag comprises the following components in parts by weight: CaF2: 65-75 parts of a solvent; CaO: 8-15 parts; al (Al)2O3: 10-18 parts; MgO: 5-11 parts;
preferably, the components of the slag system are CaF in parts by weight2: 65-75 parts of a solvent; CaO: 10-12 parts; al (Al)2O3: 10-18 parts; MgO: 5-7 parts.
Slowly inserting a remelting electrode rod into a slag pool in a molten state, adjusting voltage and current according to the diameter of the remelting electrode rod after electrifying and arcing, and melting materials;
when the diameter of the remelting electrode bar is 80-150 mm, the current is (3-4) +/-0.5 kA, and the voltage is (40-45) +/-5V; when the diameter is 151-400 mm, the current is (7-14) + -0.5 kA, and the voltage is (45-60) + -2V, namely the current and the voltage values in the remelting process are adjusted according to the diameter of the remelting electrode rod.
The slag of electroslag remelting is uniformly mixed, heated to a temperature not lower than 800 ℃ in a box-type resistance furnace, dried for not less than 3 hours, and electrified and arc-started in a cast iron crucible or a crystallizer by using a graphite electrode bar and heated to a molten state.
And (3) controlling the increment of harmful elements such as P, S through basic oxides such as CaO and MgO in the slag so that the content of P in the obtained electroslag ingot is not more than 30ppm and the content of S is not more than 15 ppm.
3) Cooling and demoulding after remelting to obtain an electroslag ingot;
the content of P in the electroslag ingot is not more than 30ppm, and the content of S is not more than 15 ppm.
Usually, before remelting, hot-feeding is carried out to obtain an electroslag ingot, the electroslag ingot is placed in a crystallizer for cooling and then demoulding, and the cooling time is more than or equal to 30 min.
And the thermal feeding adopts a power successive subtraction method, and the feeding initial current is electroslag remelting finishing current.
4) The electroslag ingot is forged into a bar after hot working, and the high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion resistant alloy is obtained after solid solution and aging treatment.
The high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy has the advantages that when the ambient temperature is-60 ℃, the low-temperature impact energy is more than or equal to 61J, the room-temperature tensile strength is more than or equal to 1030Mpa, the yield strength is more than or equal to 860Mpa, the elongation is more than or equal to 19%, the reduction of area is more than or equal to 25%, the Rockwell hardness is 30-40 HRC, and the grain size is more than or equal to 2.5 grade.
The invention has the following beneficial effects: the Ni, Cr and Fe elements in the high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy are basic elements of the nickel-based alloy, so that the nickel-based corrosion-resistant alloy has an austenite matrix and corrosion resistance.
At present, the Ni content in a high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy system is usually 53 percent, the Ni content in the high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy prepared by the invention is more than or equal to 46 percent and less than or equal to 49 percent, the Ni content is less than 53 percent, and Cu and Nb are adopted to replace partial nickel to ensure the mechanical property and the corrosion resistance of the alloy. However, excessive Cu can reduce the thermoplasticity of the alloy and affect the hot-working performance, so when the corrosion-resistant alloy is prepared by the method, the Cu content in the alloy raw materials is limited to be within the range of 1.5 percent to 3 percent, so that the problems are avoided.
Nb, Ti and Al are main components of reinforced precipitation phases gamma 'and gamma' of the precipitation type hard alloy, the hot working performance is reduced due to excessive addition, and the performance is insufficient due to too low addition.
Ti and Al are elements easy to segregate and burn, and because excessive addition of Ti and Al in the electroslag remelting smelting process can cause serious component segregation of the prepared electroslag ingot, which is not beneficial to later thermal processing treatment and material performance stabilization, the content of Ti in the alloy raw materials is more than or equal to 0.5% and less than or equal to 3%, and the content of Al is more than or equal to 0.15% and less than or equal to 0.7% when the corrosion-resistant alloy is prepared.
Mo and Nb are solid solution strengthening elements of the nickel-based alloy. The element Mo is M6The main chemical combination elements of C are excessive and easily form a grain boundary carbide coating film, a topological close-packed phase is formed, the toughness of the alloy is reduced, and the content of the C needs to be properly controlled, so that when the corrosion-resistant alloy is prepared, the Mo content in the alloy raw material is more than or equal to 2.8% and less than or equal to 5%.
C. Si and Mn elements can deoxidize and refine the alloy, improve the fluidity of liquid metal and improve the casting performance of the metal, but the elements are easy to form a TCP phase such as LAVES and are easy to segregate grain boundaries, so that the grain boundary strength of the alloy is reduced, and the weight percentages of the three elements in the alloy meet the following conditions:
w(C)+w(Si)+w(Mn)＜1％
wherein w (C) is the weight percent of C in the prepared alloy, w (Si) is the weight percent of Si in the prepared alloy, and w (Mn) is the weight percent of Mn in the prepared alloy.
The content of boron in the remelting electrode rod is less than or equal to 0.004%, the content of boron which is an alloy element in the nickel-based corrosion-resistant alloy is dozens of ppm, excessive boron causes segregation of grain boundaries, the heat strength of the material is influenced, and cracking along the grain boundaries is easily caused in the forging process.
The content of zirconium in the remelting electrode bar is less than or equal to 0.12 percent, the zirconium improves the carbide form of the alloy, improves the hot cracking tendency of the alloy, and the excessive zirconium influences the toughness of the alloy.
When the high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion-resistant alloy with the nickel content of between 46 and 49 percent is prepared, if the slag material is not adopted, flaw detection is unqualified after forging, internal cracks are formed, the metallographic phase shows that a large amount of looseness exists, and the Nb-rich phase is obviously more; if the slag material is adopted, electroslag remelting production is carried out, flaw detection is qualified after forging, the metallographic phase shows that the structure is uniform, harmful phases do not exist, and the yield is high.
The applicant verifies through experiments that when the environment temperature is-60 ℃, the low-temperature impact energy of the high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy is more than or equal to 61J, the room-temperature tensile strength is more than or equal to 1030Mpa, the yield strength is more than or equal to 860Mpa, the elongation is more than or equal to 19%, the reduction of area is more than or equal to 25%, the Rockwell hardness is 30-40 HRC, and the grain size is more than or equal to 2.5 grade.
The high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy is suitable for application in chemical industry, ocean industry and energy industry with requirements on economic cost, material strength, high temperature and corrosion resistance, and is particularly suitable for being manufactured and simultaneously contains high CO2、H2S, Cl-and elemental S-bearing member for exploitation in deep sea oil and gas environment.
Drawings
FIG. 1 is a gold phase diagram of an alloy prepared in example 1 of the present invention;
fig. 2 is a metallographic structure diagram of an alloy prepared using other electroslag slag.
Detailed Description
As shown in figures 1 to 2, the high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy comprises the following components in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.5 percent of Mn, less than or equal to 23 percent of Cr more than or equal to 18 percent, less than or equal to 49 percent of Ni more than or equal to 46 percent, less than or equal to 4 percent of Mo more than or equal to 2.8 percent, less than or equal to 4 percent of Nb more than or equal to 2.8 percent, less than or equal to 3 percent of Cu more than or equal to 1.5 percent, less than or equal to 3 percent of Ti more than or equal to 1 percent, less than or equal to 0.5 percent of Al more than or equal to 0.15 percent, less than or equal to 0.005 percent of B, less than or equal to 0.15 percent of Zr, and the balance of Fe.
Preferably, the alloy comprises the following components in percentage by weight: c is more than or equal to 0.012 percent and less than or equal to 0.023 percent, Si is more than or equal to 0.232 percent and less than or equal to 0.182 percent, Mn is more than or equal to 0.496 percent and less than or equal to 0.472 percent, Cr is more than or equal to 21.98 percent and less than or equal to 21.71 percent and less than or equal to 48.46 percent, Ni is more than or equal to 47.11 percent and less than or equal to 48.46 percent, Mo is more than or equal to 3.41 percent and less than or equal to 3.75 percent, Nb is more than or equal to 3.06 percent and less than or equal to 3.97 percent, Cu is more than or equal to 1.88 percent and less than or equal to 2.06 percent, Ti is more than or equal to 1.98 percent and less than or equal to 1.98 percent, Al is more than or equal to 0.424 percent and less than or equal to 0.0036 percent and less than or equal to 0.0041 percent, Zr is more than or equal to 0.15 percent and the balance is Fe.
The high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion-resistant alloy comprises the following components in percentage by mass: c + Si + Mn is less than 1%, namely the weight percentages of the three elements of C, Si and Mn in the alloy meet the following conditions:
w(C)+w(Si)+w(Mn)＜1％
wherein w (C) is the weight percent of C in the prepared alloy, w (Si) is the weight percent of Si in the prepared alloy, and w (Mn) is the weight percent of Mn in the prepared alloy.
The electroslag remelting method for preparing the high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion-resistant alloy comprises the following steps:
1) vacuum melting and casting the alloy raw material into a round bar, and finishing to obtain a remelting electrode bar for high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy electroslag remelting;
the round bar first needs surface sanding to remove the scale and then is finished.
The alloy comprises the following raw materials in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.6 percent of Mn, less than or equal to 22 percent of Cr which is more than or equal to 17 percent, less than or equal to 49 percent of Ni which is more than or equal to 46 percent, less than or equal to 5 percent of Mo which is more than or equal to 2.8 percent, less than or equal to 5 percent of Nb which is more than or equal to 2.8 percent, less than or equal to 3 percent of Cu which is more than or equal to 1.5 percent, less than or equal to 3 percent of Ti which is more than or equal to 0.5 percent, less than or equal to 0.7 percent of Al which is more than or equal to 0.15 percent, less than or equal to 0.005 percent of B, less than or equal to 0.2 percent of Zr, and the balance of Fe;
preferably, the alloy raw materials comprise the following components in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.46 percent of Mn, less than or equal to 23 percent of Cr which is more than or equal to 18 percent, less than or equal to 49 percent of Ni which is more than or equal to 47 percent, less than or equal to 4 percent of Mo which is more than or equal to 3 percent, less than or equal to 4 percent of Nb which is more than or equal to 3 percent, less than or equal to 3 percent of Cu which is more than or equal to 1.5 percent, less than or equal to 3 percent of Ti which is more than or equal to 1 percent, less than or equal to 0.5 percent of Al which is more than or equal to 0.3 percent, less than or equal to 0.005 percent of B, less than or equal to 0.15 percent of Zr which is more than or equal to 0.05 percent, and the balance of Fe.
The content of boron in the remelting electrode rod is less than or equal to 0.004 percent, and the content of zirconium is less than or equal to 0.12 percent.
2) Taking the components of the slag, fully and uniformly mixing, baking at 800 ℃ for not less than 3h, and carrying out arc starting and slag melting;
the slag comprises the following components in parts by weight: CaF2: 65-75 parts of a solvent; CaO: 8-15 parts; al (Al)2O3: 10-18 parts; MgO (magnesium oxide): 5-11 parts;
preferably, the components of the slag system are CaF in parts by weight2: 65-75 parts of a solvent; CaO: 10-12 parts; al (Al)2O3: 10-18 parts; MgO: 5-7 parts.
Slowly inserting a remelting electrode rod into a slag pool in a molten state, adjusting voltage and current according to the diameter of the remelting electrode rod after electrifying and arcing, and melting materials;
when the diameter of the remelting electrode bar is 80-150 mm, the current is (3-4) +/-0.5 kA, and the voltage is (40-45) +/-5V; when the diameter is 151-400 mm, the current is (7-14) + -0.5 kA, and the voltage is (45-60) + -2V, namely the current and the voltage values in the remelting process are adjusted according to the diameter of the remelting electrode rod.
The slag of electroslag remelting is uniformly mixed, heated to a temperature not lower than 800 ℃ in a box-type resistance furnace, dried for not less than 3 hours, and electrified and arc-started in a cast iron crucible or a crystallizer by using a graphite electrode bar and heated to a molten state.
And (3) controlling the increment of harmful elements such as P, S through basic oxides such as CaO and MgO in the slag so that the content of P in the obtained electroslag ingot is not more than 30ppm and the content of S is not more than 15 ppm.
3) Cooling and demoulding after remelting to obtain an electroslag ingot;
the content of P in the electroslag ingot is not more than 30ppm, and the content of S is not more than 15 ppm.
Usually, before remelting, hot-feeding is carried out to obtain an electroslag ingot, the electroslag ingot is placed in a crystallizer for cooling and then demoulding, and the cooling time is more than or equal to 30 min.
And the thermal feeding adopts a power successive subtraction method, and the feeding initial current is electroslag remelting finishing current.
4) The electroslag ingot is forged into a bar after hot working, and the high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion resistant alloy is obtained after solid solution and aging treatment.
The high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy has the advantages that when the ambient temperature is-60 ℃, the low-temperature impact energy is more than or equal to 61J, the room-temperature tensile strength is more than or equal to 1030Mpa, the yield strength is more than or equal to 860Mpa, the elongation is more than or equal to 19%, the reduction of area is more than or equal to 25%, the Rockwell hardness is 30-40 HRC, and the grain size is more than or equal to 2.5 grade.
The following examples were made according to the above method to prepare high strength copper-containing Ni-Fe-Cr based age-hardenable corrosion resistant alloys of different properties:
example 1
a) Preparation of remelted electrode bar
According to the total weight of 60kg of alloy in each furnace, the remelting electrode bar for preparing the high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy comprises the following components in percentage by weight: 48% of Ni, 22% of Cr, 2% of Ti, 0.5% of Al, 4% of Mo, 2% of Cu, 0.4% of Mn, 0.2% of Si, 3.6% of Nb, 0.02% of C, 0.004% of B, 0.01% of Zr and the balance of Fe, casting into a round rod with phi 100mm through vacuum induction melting, and sanding and finishing the surface of the round rod to obtain the remelting electrode rod used in electroslag remelting, wherein the length of the remelting electrode rod is 95 mm.
b) Electroslag remelting
Calculating the slag charge according to the usage of 5kg in each furnace, wherein the slag charge comprises the following components in parts by weight: CaF2Is 65 portions of Al2O318 parts of CaO, 10 parts of CaO and 7 parts of MgO, uniformly mixing, drying at 800 ℃ for 3 hours, and heating the slag in a cast iron crucible to a molten state through a graphite electrode rod.
Secondly, slowly lowering the prepared remelting electrode rod into molten electroslag remelting slag, adjusting remelting voltage to 45V +/-5V and gradually adjusting current to (3-4) +/-0.5 kA after electrifying and arcing;
thirdly, the remelting electrode rod is slowly melted by resistance heat, liquid drops of the remelting electrode rod pass through the melted slag layer to perform chemical reaction with slag to obtain purified liquid drops, and the liquid drops are recrystallized at the bottom of the crystallizer to obtain an electroslag ingot with the phi of 160 mm.
The detection shows that the harmful elements S in the electroslag ingot are less than 11ppm, P is less than 12ppm, and P, S content is qualified.
c) Alloy Performance testing
The electroslag ingot is forged into a bar through hot working, and after solid solution and aging treatment, the high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion resistant alloy comprises the following components in percentage by weight: 0.023% of C, 0.232% of Si, 0.472% of Mn, 21.98% of Cr, 48.46% of Ni, 3.75% of Mo, 3.97% of Nb, 2.06% of Cu, 1.98% of Ti, 0.424% of Al, 0.0041% of B, 0.0107% of Zr and the balance of Fe; when the environment temperature is-60 ℃, the low-temperature impact energy is 64J, the room-temperature tensile strength is 1368MPa, the yield strength is 926MPa, the elongation is 26.5%, the reduction of area is 28%, and the Rockwell hardness is as follows: 38HRC, grain size grade 4.
Example 2
a) Preparation of remelted electrode bar
Calculated according to the total weight of 450kg of alloy in each furnace, the remelting electrode bar for preparing the high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy comprises the following components in percentage by weight: 47% of Ni, 22% of Cr, 1.5% of Ti, 0.3% of Al, 3.2% of Mo, 1.5% of Cu, 0.3% of Mn, 0.15% of Si, 3% of Nb, 0.015% of C, 0.003% of B, 0.15% of Zr and the balance of Fe, casting into a round rod with phi 260mm through vacuum induction melting, and sanding and finishing the surface of the round rod to obtain the remelting electrode rod used in electroslag remelting, wherein the length of the remelting electrode rod is 1800 mm.
b) Electroslag remelting
Calculating the slag charge according to the usage of 25kg in each furnace, wherein the slag charge comprises the following components in parts by weight: CaF2Is 75 portions of Al2O310 parts of CaO, 10 parts of CaO and 5 parts of MgO, uniformly mixing the slag re-melted by the electroslag, heating the mixture in a box-type resistance furnace to be not less than 800 ℃, drying the mixture for not less than 3 hours, electrifying and arcing a graphite electrode bar in a crystallizer, heating the mixture to a molten state, and cooling the crystallizer and a bottom plate by water.
Slowly lowering the prepared remelting electrode rod into molten electroslag remelting slag, and adjusting remelting voltage to 53V +/-2V and current to (7-14) +/-0.5 kA after electrifying and arcing;
thirdly, the remelting electrode bar is slowly melted by resistance heat, liquid drops of the remelting electrode bar penetrate through the melted slag layer to react with slag to obtain purified liquid drops, and the liquid drops are recrystallized at the bottom of the crystallizer to obtain an electroslag ingot with the diameter of phi 320 mm. Tests show that the prepared alloy contains the following harmful elements of sulfur and phosphorus: s is 10ppm, P is 18 ppm; the contents of sulfur and phosphorus are qualified.
c) Alloy Performance testing
After the electroslag ingot is subjected to high-temperature homogenization diffusion annealing heat treatment, the electroslag ingot is heated and forged into a bar, and after solid solution and aging treatment, the high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion resistant alloy comprises the following components in percentage by weight: 0.012% of C, 0.182% of Si, 0.496% of Mn, 21.71% of Cr, 47.11% of Ni, 3.41% of Mo, 3.06% of Nb, 1.88% of Cu, 1.62% of Ti, 0.208% of Al, 0.0036% of B, 0.15% of Zr and the balance of Fe; when the environment temperature is-60 ℃, the low-temperature impact energy is 89J, the room-temperature tensile strength is 1135MPa, the yield strength is 885MPa, the elongation is 28.5%, the reduction of area is 44%, and the Rockwell hardness is as follows: 38.5HRC, 4.5 grade grain size.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and modifications of the present invention by those skilled in the art are within the scope of the present invention without departing from the spirit of the present invention.

Claims (10)

1. The high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy is characterized by comprising the following components in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.5 percent of Mn, less than or equal to 23 percent of Cr more than or equal to 18 percent, less than or equal to 49 percent of Ni more than or equal to 46 percent, less than or equal to 4 percent of Mo more than or equal to 2.8 percent, less than or equal to 4 percent of Nb more than or equal to 2.8 percent, less than or equal to 3 percent of Cu more than or equal to 1.5 percent, less than or equal to 3 percent of Ti more than or equal to 1 percent, less than or equal to 0.5 percent of Al more than or equal to 0.15 percent, less than or equal to 0.005 percent of B, less than or equal to 0.15 percent of Zr, and the balance of Fe.
2. The corrosion-resistant alloy of claim 1, wherein the alloy comprises the following components in percentage by weight: c is more than or equal to 0.012 percent and less than or equal to 0.023 percent, Si is more than or equal to 0.232 percent and less than or equal to 0.182 percent, Mn is more than or equal to 0.496 percent and less than or equal to 0.472 percent, Cr is more than or equal to 21.98 percent and less than or equal to 21.71 percent and less than or equal to 48.46 percent, Ni is more than or equal to 47.11 percent and less than or equal to 48.46 percent, Mo is more than or equal to 3.41 percent and less than or equal to 3.75 percent, Nb is more than or equal to 3.06 percent and less than or equal to 3.97 percent, Cu is more than or equal to 1.88 percent and less than or equal to 2.06 percent, Ti is more than or equal to 1.98 percent and less than or equal to 1.98 percent, Al is more than or equal to 0.424 percent and less than or equal to 0.0036 percent and less than or equal to 0.0041 percent, Zr is more than or equal to 0.15 percent and the balance is Fe.
3. The corrosion-resistant alloy of claim 1 or 2, wherein: the high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion-resistant alloy comprises the following components in percentage by mass: c + Si + Mn is less than 1 percent.
4. An electroslag remelting method for high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy is characterized by comprising the following steps of:
1) vacuum melting and casting the alloy raw material into a round bar, and finishing to obtain a remelting electrode bar for high-strength copper-containing Ni-Fe-Cr-based age hardening type corrosion-resistant alloy electroslag remelting;
2) taking the components of the slag, fully and uniformly mixing, baking at 800 ℃ for not less than 3h, and carrying out arc starting and slag melting;
inserting a remelting electrode rod into a slag pool, adjusting voltage and current according to the diameter of the remelting electrode rod after electrifying and arcing, and melting;
3) cooling and demoulding after remelting to obtain an electroslag ingot;
4) the electroslag ingot is forged into a bar after hot working, and the high-strength copper-containing Ni-Fe-Cr-based age hardening corrosion resistant alloy is obtained after solid solution and aging treatment.
5. The method of claim 4, wherein: the alloy comprises the following raw materials in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.6 percent of Mn, less than or equal to 22 percent of Cr which is more than or equal to 17 percent, less than or equal to 49 percent of Ni which is more than or equal to 46 percent, less than or equal to 5 percent of Mo which is more than or equal to 2.8 percent, less than or equal to 5 percent of Nb which is more than or equal to 2.8 percent, less than or equal to 3 percent of Cu which is more than or equal to 1.5 percent, less than or equal to 3 percent of Ti which is more than or equal to 0.5 percent, less than or equal to 0.7 percent of Al which is more than or equal to 0.15 percent, less than or equal to 0.005 percent of B, less than or equal to 0.2 percent of Zr, and the balance of Fe;
preferably, the alloy raw materials comprise the following components in percentage by weight: less than or equal to 0.03 percent of C, less than or equal to 0.3 percent of Si, less than or equal to 0.46 percent of Mn, less than or equal to 23 percent of Cr which is more than or equal to 18 percent, less than or equal to 49 percent of Ni which is more than or equal to 47 percent, less than or equal to 4 percent of Mo which is more than or equal to 3 percent, less than or equal to 4 percent of Nb which is more than or equal to 3 percent, less than or equal to 3 percent of Cu which is more than or equal to 1.5 percent, less than or equal to 3 percent of Ti which is more than or equal to 1 percent, less than or equal to 0.5 percent of Al which is more than or equal to 0.3 percent, less than or equal to 0.005 percent of B, less than or equal to 0.15 percent of Zr which is more than or equal to 0.05 percent, and the balance of Fe.
6. The method of claim 4, wherein: the content of boron in the remelting electrode rod is less than or equal to 0.004 percent, and the content of zirconium is less than or equal to 0.12 percent.
7. The method of claim 4, wherein: the slag comprises the following components in parts by weight: CaF2: 65-75 parts of a solvent; CaO: 8-15 parts; al (Al)2O3: 10-18 parts; MgO: 5-11 parts;
preferably, the components of the slag system are CaF in parts by weight2: 65-75 parts of a solvent; CaO: 10-12 parts; al (Al)2O3: 10-18 parts; MgO: 5-7 parts.
8. The method of claim 4, wherein: the content of P in the electroslag ingot is not more than 30ppm, and the content of S is not more than 15 ppm.
9. The method of claim 4, wherein: when the diameter of the remelting electrode rod in the step 2) is 80-150 mm, the current is (3-4) +/-0.5 kA, and the voltage is (40-45) +/-5V; when the diameter is 151-400 mm, the current is (7-14) +/-0.5 kA, and the voltage is (45-60) +/-2V.
10. The method of claim 4, wherein: the high-strength copper-containing Ni-Fe-Cr-based age-hardening corrosion-resistant alloy has the advantages that when the ambient temperature is-60 ℃, the low-temperature impact energy is more than or equal to 61J, the room-temperature tensile strength is more than or equal to 1030Mpa, the yield strength is more than or equal to 860Mpa, the elongation is more than or equal to 19%, the reduction of area is more than or equal to 25%, the Rockwell hardness is 30-40 HRC, and the grain size is more than or equal to 2.5 grade.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183448A (en) * 2021-12-14 2022-03-15 苏州昭伍亿精密五金有限公司 High-strength corrosion-resistant bolt and production process thereof
CN115418489A (en) * 2022-08-31 2022-12-02 重庆大学 Method for accurately controlling boron in electroslag remelting boron-containing high-temperature alloy

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358511A (en) * 1980-10-31 1982-11-09 Huntington Alloys, Inc. Tube material for sour wells of intermediate depths
EP0136998A1 (en) * 1983-08-10 1985-04-10 Voest-Alpine Stahl Aktiengesellschaft Wrought nickel-base alloy and process for its thermal treatment
JPH07207401A (en) * 1993-12-28 1995-08-08 Sima Sa Ni-fe-cr-mo four-element nickel-based alloy hardened by deposition of gamma prime phase, and corrosion resisting method used especially in oil refining industry
AU666784B2 (en) * 1992-12-09 1996-02-22 S I M A, Sa Nickel based alloy in the quaternary Ni-Fe-Cr-Mo system hardened by precipitation of the gamma prime phase and withstanding modes of corrosion to be found, in particular, in the oil industry
CN101305108A (en) * 2005-11-07 2008-11-12 亨廷顿冶金公司 High strength corrosion resistant alloy for oil patch applications
CN102912151A (en) * 2012-11-23 2013-02-06 重庆材料研究院 Ultra pure electroslag remelting method for high-performance corrosion resistant alloy
CN103243274A (en) * 2012-02-02 2013-08-14 大田精密工业股份有限公司 Fe-Cr-Ni alloy of golf club head
CN103740983A (en) * 2013-12-19 2014-04-23 重庆材料研究院有限公司 High-obdurability corrosion-resistant age hardening nickel-based alloy and direct ageing heat treatment method
CN104451339A (en) * 2014-12-23 2015-03-25 重庆材料研究院有限公司 Low-nickel aging strengthening type iron-nickel based corrosion resistant alloy and preparation method thereof
CN104878248A (en) * 2015-03-12 2015-09-02 江苏新华合金电器有限公司 High temperature alloy 625H and technological making method thereof
CN105132701A (en) * 2015-08-17 2015-12-09 东北大学 Slag system used for preparing nickel base alloy through electroslag remelting and use method of slag system
CN105483494A (en) * 2015-12-01 2016-04-13 重庆材料研究院有限公司 Ageing strengthening type iron nickel base corrosion resistant alloy easily processed into thick-walled seamless tube
TWI612143B (en) * 2016-10-12 2018-01-21 中國鋼鐵股份有限公司 Precipitation-hardened nickel-based alloy and method of producing the same

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358511A (en) * 1980-10-31 1982-11-09 Huntington Alloys, Inc. Tube material for sour wells of intermediate depths
EP0136998A1 (en) * 1983-08-10 1985-04-10 Voest-Alpine Stahl Aktiengesellschaft Wrought nickel-base alloy and process for its thermal treatment
AU666784B2 (en) * 1992-12-09 1996-02-22 S I M A, Sa Nickel based alloy in the quaternary Ni-Fe-Cr-Mo system hardened by precipitation of the gamma prime phase and withstanding modes of corrosion to be found, in particular, in the oil industry
JPH07207401A (en) * 1993-12-28 1995-08-08 Sima Sa Ni-fe-cr-mo four-element nickel-based alloy hardened by deposition of gamma prime phase, and corrosion resisting method used especially in oil refining industry
CN101305108A (en) * 2005-11-07 2008-11-12 亨廷顿冶金公司 High strength corrosion resistant alloy for oil patch applications
CN103243274A (en) * 2012-02-02 2013-08-14 大田精密工业股份有限公司 Fe-Cr-Ni alloy of golf club head
CN102912151A (en) * 2012-11-23 2013-02-06 重庆材料研究院 Ultra pure electroslag remelting method for high-performance corrosion resistant alloy
CN103740983A (en) * 2013-12-19 2014-04-23 重庆材料研究院有限公司 High-obdurability corrosion-resistant age hardening nickel-based alloy and direct ageing heat treatment method
CN104451339A (en) * 2014-12-23 2015-03-25 重庆材料研究院有限公司 Low-nickel aging strengthening type iron-nickel based corrosion resistant alloy and preparation method thereof
CN104878248A (en) * 2015-03-12 2015-09-02 江苏新华合金电器有限公司 High temperature alloy 625H and technological making method thereof
CN105132701A (en) * 2015-08-17 2015-12-09 东北大学 Slag system used for preparing nickel base alloy through electroslag remelting and use method of slag system
CN105483494A (en) * 2015-12-01 2016-04-13 重庆材料研究院有限公司 Ageing strengthening type iron nickel base corrosion resistant alloy easily processed into thick-walled seamless tube
TWI612143B (en) * 2016-10-12 2018-01-21 中國鋼鐵股份有限公司 Precipitation-hardened nickel-based alloy and method of producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张玉碧等: "一种新型Ni-Cr-Fe基合金的成分设计、冶金及强韧化热处理工艺研究", 《功能材料》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183448A (en) * 2021-12-14 2022-03-15 苏州昭伍亿精密五金有限公司 High-strength corrosion-resistant bolt and production process thereof
CN115418489A (en) * 2022-08-31 2022-12-02 重庆大学 Method for accurately controlling boron in electroslag remelting boron-containing high-temperature alloy

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