CN105886949A - High-performance heat resistant steel, and preparation method and application thereof - Google Patents

High-performance heat resistant steel, and preparation method and application thereof Download PDF

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Publication number
CN105886949A
CN105886949A CN201610232172.0A CN201610232172A CN105886949A CN 105886949 A CN105886949 A CN 105886949A CN 201610232172 A CN201610232172 A CN 201610232172A CN 105886949 A CN105886949 A CN 105886949A
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CN
China
Prior art keywords
heat resistant
resistant steel
property heat
steel
gained
Prior art date
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Pending
Application number
CN201610232172.0A
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Chinese (zh)
Inventor
廖云虎
雷德江
黄志永
丁勇
刘永新
高刚毅
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SICHUAN LIUHE FORGING Co Ltd
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SICHUAN LIUHE FORGING Co Ltd
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Publication date
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Priority to CN201610232172.0A priority Critical patent/CN105886949A/en
Publication of CN105886949A publication Critical patent/CN105886949A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps

Abstract

The invention discloses high-performance heat resistant steel, and belongs to the technical field of high-temperature alloy materials. The high-performance heat resistant steel is composed of, by weight percentage, 0.03-0.05% of C, 14.0-16.0% of Cr, 0.60-1.00% of Mo, 6.20-6.80% of Ni, 1.35-1.75% of Cu, 0.30-0.80% of Mn, 0.24-0.75% of Nb, 0.20-0.50% of Si, and the balance Fe. The invention further discloses a preparation method and application of the high-performance heat resistant steel. The high-performance heat resistant steel has excellent high temperature resistance and mechanical properties. According to the mechanical properties at the room temperature of 25 DEG C, the tensile strength Rm at the room temperature tensile test is greater than or equal to 1245 Mpa, the yield strength RP0.2 is greater than or equal to 1030 N/mm<2>, the elongation A is greater than or equal to 13.5%, the percentage reduction of area Z is greater than or equal to 58%, the impact energy AKv is greater than or equal to 94 J, and the hardness HB is greater than or equal to 393.

Description

A kind of high-property heat resistant steel, its preparation method and application thereof
Technical field
The present invention relates to alloy material, particularly relate to a kind of high-property heat resistant steel, its preparation method And application.
Background technology
Materialogy core is alloying general principle, this be material Strengthening and Toughening contradiction main because of Element.It is to say, be often implacable contradiction in steel field, intensity and toughness, as Really intensity is sufficiently high, then corresponding toughness just can not get ensureing, is the most also such.
But, in the field that some is special, such as aero-engine compressor blade, both requirement High intensity requires again high tenacity.Prior art reports the material that much can be used for compressor, this A little material inlet ends to high-pressure side, total class of material can be successively: aluminium alloy, precipitation-hardening Stainless steel, titanium alloy, to high temperature alloy, after what compressor blade, due to work temperature Du Taigao, oxidation resistance and the fire resistance of titanium alloy are the most not competent, high temperature alloy leaf Sheet has reformed into unique selection, and existing precipitation-hardening stainless steel is the most not competent.
A kind of high-property heat resistant steel having intensity and toughness concurrently is provided, is that this area is badly in need of solving Problem.
Summary of the invention
An object of the present invention, in that provide a kind of high-property heat resistant steel, on solving State problem.
To achieve these goals, the technical solution used in the present invention is such that a kind of high property Energy heat resisting steel, it is characterised in that: its chemical composition, be by weight percentage:
C 0.03~0.05%
Cr 14.00~16.00%
Mo 0.60~1.00%
Ni 6.20~6.80%
Cu 1.35~1.75%
Mn 0.30~0.80%
Nb 0.24~0.75%
Si 0.20~0.50%,
Surplus is Fe.
As preferred technical scheme: in described material, contained impurity, by mass percentage Meter:
P≤0.020% S≤0.005%
N≤0.030% V≤0.100%.
Wherein, S (sulphur) is the harmful foreign material in steel, and the steel that sulfur-bearing is higher is pressed at high temperature Power adds man-hour, easy embrittlement, is generally called red brittleness;
P (phosphorus) can make the plasticity of steel and toughness be decreased obviously, the most more Seriously, this phenomenon is called cold brittleness. and in high-quality steel, sulphur and phosphorus strictly to control. but from From the perspective of Ling, containing higher sulphur and phosphorus in mild steel, it can be made to cut easily broken, to improvement The machinability of steel is favourable;
V (vanadium);The grain structure of steel can be refined, improve the intensity of steel, toughness and wearability. when It can increase the quenching degree of steel when high temperature fuses into austenite;Otherwise, when it is in carbide shape In the presence of state, its quenching degree will be reduced;
N (nitrogen): in the metal of liquid, can dissolve substantial amounts of nitrogen when high temperature, and During steel solidifies, the solubility due to nitrogen declines, and oversaturated nitrogen needs with bubble Form escapes from liquid metal, but when the crystallization rate of liquid metal is more than the effusion of bubble During speed.Pore will be formed, when nitrogen content is more than 0.01% in iron liquid.Just it is easily formed gas Hole, and pore is the crack initiation source of crackle, owing to pore can cause concentration and the bearing capacity of stress Decline;
At high temperature, steel grade dissolves substantial amounts of nitrogen, during cooling, and some nitrogen and steel Separate out on the thick nitride that kind of alloying element is formed, crystal boundary in steel or intracrystalline, and cause The heat endurance of this steel is deteriorated and becomes fragile.As separated out with the form of Fe4N, be distributed in crystal boundary and Intracrystalline.Causing the embrittlement of metal, its embrittling effect increases with the increase of nitrogen content, the most right The impact of low-temperature flexibility.And initial aging stage can be caused.
The two of the purpose of the present invention, are to provide the preparation side of a kind of above-mentioned high-property heat resistant steel Method: comprise the following steps:
(1) press component ratio and weigh raw material, then carry out just refining, smelting temperature 1580~1620 DEG C, obtain molten steel;During this, preferably regulate essential element (C, Mn, Si, Nb do not adjust) content;
(2) molten steel of step (1) gained is refined, pour into consutrode;Preferably Adjust the content of each element after having refined so that it is weight ratio meets design requirement, control impurity The content of element is the lowest
(3) consutrode of step (2) gained is carried out remelting refining, make electroslag ingot; During Gai, electroslag slag system be preferred: CaF2:Al2O3: CaO:MgO=60:25:10:5 (mass ratio);
(4) it is forged into rod iron after being heated by the electroslag ingot of step (3) gained;Preferably employ 2000T press.
(5) carry out annealing after being forged by step (4) gained rod iron to be heat-treated, step and technique ginseng Number is as follows:
Rod iron is heated to 607~635 DEG C, and after being incubated 6~30 hours, stove is cooled to 500 DEG C of skies of coming out of the stove Cold, then carry out surface process, to obtain final product.
As preferred technical scheme: in step (1), just during refining in non-vacuum induction furnace Carry out.
As preferred technical scheme: step (2) is carried out in AOD refining furnace.
The three of the purpose of the present invention, are to provide the application of a kind of above-mentioned high-property heat resistant steel, will Described high-property heat resistant steel is used for compressor blade
Compared with prior art, it is an advantage of the current invention that: the high-property heat resistant steel tool of the present invention Having resistance to elevated temperatures and the mechanical property of excellence, room temperature (25 DEG C) its mechanical property is: room temperature Tension test tensile strength Rm≥1245Mpa;Yield strength RP0.2≥1030N/mm2; Percentage elongation A >=13.5%;Contraction percentage of area Z >=58%;Ballistic work AKv >=94J;Hardness HB ≥393。
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1-5:
Use the element of different content, prepare alloy material, have employed altogether 5 kinds of different joining Side, the composition of each element is shown in Table 1, in table 1, is weight/mass percentage composition value.
The composition of various elements in table 1 embodiment 1-5
Preparation method:
(1) take required chemical element according to table 1, smelt at non-vacuum induction furnace, melting Journey regulates the content of chemical element so that it is weight percent such as table 1:
And the content that controls impurity element is the lowest, pour into from power consumption after AOD refines Pole;
(2) by consutrode remelting refining in electroslag furnace, impurity element is reduced further Content so that it is meet following requirement:
S≤0.005 (percentage by weight) P≤0.020 (percentage by weight)
N≤0.030 (percentage by weight) V≤0.10 (percentage by weight)
After each constituent content of sample analysis is qualified, make electroslag ingot;
(3) 2000T press is used to be forged into rod iron after being heated by electroslag ingot;
(4) carrying out annealing after rod iron forging to be heat-treated, step and technological parameter are as follows:
Rod iron is heated to 621 ± 14 DEG C, and after being incubated 6~30 hours, stove is cooled to 500 DEG C of skies of coming out of the stove Cold.
(5) rod iron surface processes, and finished product rod iron carries out surface car light and processes, eliminate surface Defect also makes rod iron size, shape, surface quality meet design requirement, prepares finished product rod iron;
(6) inspection by sampling mechanical property on finished product rod iron, carries out tensile test at room temperature;
Embodiment 6
Material properties test
Inspection by sampling mechanical property on finished product rod iron, carries out the mechanical property test of correspondence;
Sample heat treatment step and technological parameter are as follows:
1), Nb/C=13~15
Solution treatment: 1038 ± 5 DEG C of times 40~180 minutes types of cooling: oil cold or The suitable medium cooling cold with oil of person's cooling rate;
Ageing Treatment: 515 ± 5 DEG C of times 8~10 hours types of cooling: air cooling.
2), Nb/C=9~12
Solution treatment: 1038 ± 5 DEG C of times 40~180 minutes types of cooling: oil cold or The suitable medium cooling cold with oil of person's cooling rate;
Ageing Treatment: 500 ± 5 DEG C of times 8~10 hours types of cooling: air cooling.
Finished product rod iron Progressive symmetric erythrokeratodermia obtained by embodiment 1-5 can be tested
Through tensile test at room temperature, result shows that its mechanical property is fully achieved design requirement, examination Test result as follows:
Room temperature tensile:
Performance data under the conditions of 700 DEG C/600Mpa:
It can be seen from the results above that the compressor blade that this material manufactures, it is possible to meet and calm the anger The requirement of machine applied at elevated temperature condition.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, Should be included within the scope of the present invention.

Claims (6)

1. a high-property heat resistant steel, it is characterised in that: its chemical composition, by weight percentage It is calculated as:
C 0.03~0.05%
Cr 14.00~16.00%
Mo 0.60~1.00%
Ni 6.20~6.80%
Cu 1.35~1.75%
Mn 0.30~0.80%
Nb 0.24~0.75%
Si 0.20~0.50%,
Surplus is Fe.
High-property heat resistant steel the most according to claim 1, it is characterised in that: described material In, contained impurity, by mass percentage:
P≤0.020% S≤0.005%
N≤0.030% V≤0.100%.
3. the high-property heat resistant steel described in claim 1 or 2, it is characterised in that: include following Step:
(1) press component ratio and weigh raw material, then carry out just refining, smelting temperature 1580~1620 DEG C, obtain molten steel;
(2) molten steel of step (1) gained is refined, pour into consutrode;
(3) consutrode of step (2) gained is carried out remelting refining, make electroslag ingot;
(4) it is forged into rod iron after being heated by the electroslag ingot of step (3) gained;
(5) carry out annealing after being forged by step (4) gained rod iron to be heat-treated, step and technique ginseng Number is as follows:
Rod iron is heated to 607~635 DEG C, and after being incubated 6~30 hours, stove is cooled to 500 DEG C of skies of coming out of the stove Cold, then carry out surface process, to obtain final product.
The preparation method of high-property heat resistant steel the most according to claim 3, its feature exists In: in step (1), just carry out in non-vacuum induction furnace during refining.
The preparation method of high-property heat resistant steel the most according to claim 3, its feature exists In: step (2) is carried out in AOD refining furnace.
6. the application of the high-property heat resistant steel described in claim 1 or 2, it is characterised in that will Described high-property heat resistant steel is used for compressor blade.
CN201610232172.0A 2016-04-14 2016-04-14 High-performance heat resistant steel, and preparation method and application thereof Pending CN105886949A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106282729A (en) * 2016-08-31 2017-01-04 彭书成 A kind of superalloy and preparation method thereof
CN109385571A (en) * 2018-10-11 2019-02-26 中国航发成都发动机有限公司 A kind of heat-resistance stainless steel material and preparation method thereof
CN109852775A (en) * 2018-11-30 2019-06-07 什邡市三裕锻件有限公司 A kind of heat treatment after forging technique of large scale low-carbon alloy steel forging
CN110863115A (en) * 2019-11-29 2020-03-06 四川六合特种金属材料股份有限公司 Method for improving high-temperature endurance performance of blade steel X19CrMoNbVN11-1
CN114635075A (en) * 2020-12-15 2022-06-17 上海电气电站设备有限公司 High-strength high-ductility and toughness blade material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH108217A (en) * 1996-06-14 1998-01-13 Agency Of Ind Science & Technol Stainless steel for steam turbine blade, excellent in pitting corrosion resistance
US20030102057A1 (en) * 2001-10-23 2003-06-05 Short John William High-strength high-toughness precipitation-hardened steel
JP2003226943A (en) * 2002-02-06 2003-08-15 Toshiba Corp High strength, high corrosion resistance steel, production method therefor and geothermal turbine blade
CN101892430A (en) * 2009-02-04 2010-11-24 通用电气公司 High corrosion resistance precipitation hardened martensitic stainless steel
CN102181789A (en) * 2011-04-27 2011-09-14 四川六合锻造股份有限公司 Refractory steel material for supercritical turbine blade and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH108217A (en) * 1996-06-14 1998-01-13 Agency Of Ind Science & Technol Stainless steel for steam turbine blade, excellent in pitting corrosion resistance
US20030102057A1 (en) * 2001-10-23 2003-06-05 Short John William High-strength high-toughness precipitation-hardened steel
JP2003226943A (en) * 2002-02-06 2003-08-15 Toshiba Corp High strength, high corrosion resistance steel, production method therefor and geothermal turbine blade
CN101892430A (en) * 2009-02-04 2010-11-24 通用电气公司 High corrosion resistance precipitation hardened martensitic stainless steel
CN102181789A (en) * 2011-04-27 2011-09-14 四川六合锻造股份有限公司 Refractory steel material for supercritical turbine blade and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106282729A (en) * 2016-08-31 2017-01-04 彭书成 A kind of superalloy and preparation method thereof
CN109385571A (en) * 2018-10-11 2019-02-26 中国航发成都发动机有限公司 A kind of heat-resistance stainless steel material and preparation method thereof
CN109852775A (en) * 2018-11-30 2019-06-07 什邡市三裕锻件有限公司 A kind of heat treatment after forging technique of large scale low-carbon alloy steel forging
CN110863115A (en) * 2019-11-29 2020-03-06 四川六合特种金属材料股份有限公司 Method for improving high-temperature endurance performance of blade steel X19CrMoNbVN11-1
CN110863115B (en) * 2019-11-29 2021-08-20 四川六合特种金属材料股份有限公司 Method for improving high-temperature endurance performance of blade steel X19CrMoNbVN11-1
CN114635075A (en) * 2020-12-15 2022-06-17 上海电气电站设备有限公司 High-strength high-ductility and toughness blade material

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