CN111349766B - Heat treatment method for high-temperature-resistant alloy material - Google Patents
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Abstract
The invention discloses a heat treatment method for a high-temperature-resistant alloy material, which comprises the following steps: step one, heating a high-temperature-resistant alloy blank to a first temperature, and then preserving heat; step two, cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace, and carrying out water cooling after heat preservation; step three, heating the water-cooled high-temperature-resistant alloy blank to 720-740 ℃, and then preserving heat; step four, cooling the high-temperature-resistant alloy material to 620-640 ℃ along with the furnace, preserving heat, and then air-cooling to obtain a finished product; the high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.02-0.08%, Cr: 17.0-21.0%, Ni: 50% -55%, Co: 0-1.0%, Mo: 2.80-3.30%, Al: 0.30-0.70%, Ti: 0.75 to 1.15%, Nb: 4.75-5.50%, B: 0-0.006%, Mg: 0-0.01%, Mn: 0-0.35%, Si: 0-0.35%, P: 0-0.015%, S: 0-0.015%, Cu: 0-0.30%, Ca: 0-0.01%, and the balance Fe.
Description
Technical Field
The invention belongs to the technical field of high-temperature-resistant alloy materials, and particularly relates to a heat treatment method for a high-temperature-resistant alloy material.
Background
High temperature resistant alloy refers to an alloy having high oxidation resistance, creep resistance and permanent strength at high temperature, and is also called as high temperature alloy. With the development of modern scientific technology (especially aviation, rocket, etc.), the working temperature of metal materials or articles is continuously increasing.
The properties of the superalloy are closely related to the seven structures, and the structure of the superalloy can be adjusted through heat treatment, such as the grain size, carbide morphology and distribution of the alloy, the size and distribution of the intermetallic compound (gamma') and the like are controlled through a heat treatment process. In the field of superalloys, mainly iron-based, nickel-based and cobalt-based superalloys are used in large quantities.
The nickel-based high-temperature alloy has good fatigue resistance, radiation resistance, oxidation resistance and corrosion resistance, and good processability and welding performance. Can manufacture various parts with complex shapes, and has wide application in aerospace, nuclear energy, petroleum industry and extrusion dies. In practical applications, materials are generally required to have high yield strength.
Disclosure of Invention
The invention designs and develops a heat treatment method for a high-temperature-resistant alloy material, and aims to improve the mechanical property of the high-temperature-resistant alloy by reasonably setting the heat treatment process of the high-temperature-resistant alloy.
Another object of the present invention is to control the solid solution temperature during the heat treatment of the superalloy according to the composition of the superalloy, thereby further improving the yield strength and tensile strength of the superalloy.
The technical scheme provided by the invention is as follows:
a heat treatment method for a high-temperature-resistant alloy material comprises the following steps:
step one, heating a high-temperature-resistant alloy blank to a first temperature, and then preserving heat;
step two, cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace, and carrying out water cooling after heat preservation;
step three, heating the water-cooled high-temperature-resistant alloy blank to 720-740 ℃, and then preserving heat;
step four, cooling the high-temperature-resistant alloy material to 620-640 ℃ along with the furnace, preserving heat, and then air-cooling to obtain a finished product;
the high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.02-0.08%, Cr: 17.0-21.0%, Ni: 50% -55%, Co: 0-1.0%, Mo: 2.80-3.30%, Al: 0.30-0.70%, Ti: 0.75 to 1.15%, Nb: 4.75-5.50%, B: 0-0.006%, Mg: 0-0.01%, Mn: 0-0.35%, Si: 0-0.35%, P: 0-0.015%, S: 0-0.015%, Cu: 0-0.30%, Ca: 0-0.01%, and the balance Fe.
Preferably, the first temperature is:
wherein, T0-1A reference temperature, w, of the first temperatureNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Preferably, in the first step, the holding time is: 60-80 min.
Preferably, the second temperature is:
wherein, T0-2Is a reference temperature of the second temperature, wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Preferably, in the second step, the holding time is: 50-70 min.
Preferably, in the second step, the high-temperature-resistant alloy blank is controlled to be cooled to a second temperature along with the furnace at a speed of 50-60 ℃/h.
Preferably, in the third step, the heat preservation time is 8-9 h.
Preferably, in the fourth step, the furnace cooling speed is controlled to be 40-50 ℃/h.
Preferably, in the fourth step, the heat preservation time is 9-10 h.
The invention has the beneficial effects that:
according to the heat treatment method for the high-temperature-resistant alloy material, provided by the invention, the mechanical property of the high-temperature-resistant alloy can be improved by reasonably setting the heat treatment process of the high-temperature-resistant alloy.
According to the heat treatment method for the high-temperature-resistant alloy material, provided by the invention, the solid solution temperature in the heat treatment process of the high-temperature-resistant alloy is controlled according to the components of the high-temperature-resistant alloy, so that the yield strength and the tensile strength of the high-temperature-resistant alloy can be further improved.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention with reference to the description.
The invention provides a heat treatment method for a high-temperature-resistant alloy material, which is used for carrying out heat treatment on a nickel-based high-temperature-resistant material and mainly comprises the following steps:
step one, heating a high-temperature-resistant alloy blank to be subjected to heat treatment in a heat treatment furnace to a first temperature, and then, completely burning, and preserving heat for 60-80 min to precipitate carbide at a crystal boundary;
step two, cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace, preserving the heat for 50-70 min, and then carrying out water-cooling solution treatment; the cooling speed can be increased by water cooling, and better solid solution strength can be obtained;
preferably, the high-temperature-resistant alloy blank is controlled to be cooled to a second temperature along with the furnace at a speed of 50-60 ℃/h;
step three, heating the water-cooled high-temperature-resistant alloy blank to 720-740 ℃ in a heat treatment furnace, and then preserving heat for 8-9 hours;
step four, cooling the high-temperature-resistant alloy material to 620-640 ℃ along with the furnace, preserving heat for 9-10 hours, and then air cooling to obtain a finished product;
preferably, the cooling speed along with the furnace is controlled to be 40-50 ℃/h;
the high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.02-0.08%, Cr: 17.0-21.0%, Ni: 50% -55%, Co: 0-1.0%, Mo: 2.80-3.30%, Al: 0.30-0.70%, Ti: 0.75 to 1.15%, Nb: 4.75-5.50%, B: 0-0.006%, Mg: 0-0.01%, Mn: 0-0.35%, Si: 0-0.35%, P: 0-0.015%, S: 0-0.015%, Cu: 0-0.30%, Ca: 0-0.01%, and the balance Fe.
In another embodiment, the first temperature is set as:
wherein, T0-1Setting T empirically for a reference temperature of the first temperature0-1＝1000℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb,wCris the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
In another embodiment, the second temperature is set as:
wherein, T0-2For the reference temperature of the second temperature, T is set empirically0-2＝900℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Example 1
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment in a heat treatment furnace to a first temperature, completely burning, and keeping the temperature for 80 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 50 ℃/h; preserving heat for 70min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 720 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; then cooling to 620 ℃ along with the furnace at the speed of 40 ℃/h, preserving heat for 10h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.08%, Cr: 17.0%, Ni: 50%, Co: 1.0%, Mo: 3.30%, Al: 0.70%, Ti: 1.15%, Nb: 5.50%, B: 0.004%, Mg: 0.01%, Mn: 0.35%, Si: 0.32%, P: 0.01%, S: 0.01%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is:
wherein, T0-1Setting T empirically for a reference temperature of the first temperature0-1＝1000℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr,wTiis the mass fraction of Ti, wAlIs the mass fraction of Al.
The second temperature is:
wherein, T0-2For the reference temperature of the second temperature, T is set empirically0-2＝900℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Example 2
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment in a heat treatment furnace to a first temperature, completely burning, and keeping the temperature for 60 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 60 ℃/h; preserving heat for 50min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 740 ℃ in a heat treatment furnace, and then preserving heat for 8 hours; and then cooling to 640 ℃ along with the furnace at the speed of 50 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 21.0%, Ni: 55%, Co: 1.0%, Mo: 2.80%, Al: 0.30%, Ti: 0.75%, Nb: 4.75%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.20%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is:
wherein, T0-1Setting T empirically for a reference temperature of the first temperature0-1＝1000℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
The second temperature is:
wherein, T0-2For the reference temperature of the second temperature, T is set empirically0-2＝900℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Example 3
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment to a first temperature in a heat treatment furnace, and then completely burning, and keeping the temperature for 70 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 55 ℃/h; preserving heat for 60min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 730 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; and then cooling to 630 ℃ along with the furnace at the speed of 45 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is:
wherein, T0-1Setting T empirically for a reference temperature of the first temperature0-1＝1000℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
The second temperature is:
wherein, T0-2For the reference temperature of the second temperature, T is set empirically0-2＝900℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Comparative example 1
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment to a first temperature in a heat treatment furnace, and then completely burning, and keeping the temperature for 70 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 55 ℃/h; preserving heat for 60min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 730 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; and then cooling to 630 ℃ along with the furnace at the speed of 45 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is: t is1＝950℃；
The second temperature is:
wherein, T0-2For the reference temperature of the second temperature, T is set empirically0-2＝900℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Comparative example 2
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment to a first temperature in a heat treatment furnace, and then completely burning, and keeping the temperature for 70 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 55 ℃/h; preserving heat for 60min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 730 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; and then cooling to 630 ℃ along with the furnace at the speed of 45 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is: t is1＝1050℃；
The second temperature is:
wherein, T0-2For the reference temperature of the second temperature, T is set empirically0-2＝900℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
Comparative example 3
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment to a first temperature in a heat treatment furnace, and then completely burning, and keeping the temperature for 70 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 55 ℃/h; preserving heat for 60min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 730 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; and then cooling to 630 ℃ along with the furnace at the speed of 45 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is:
wherein, T0-1Setting T empirically for a reference temperature of the first temperature0-1＝1000℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
The second temperature is: t is2＝850℃。
Comparative example 4
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment to a first temperature in a heat treatment furnace, and then completely burning, and keeping the temperature for 70 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 55 ℃/h; preserving heat for 60min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 730 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; and then cooling to 630 ℃ along with the furnace at the speed of 45 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is:
wherein, T0-1Setting T empirically for a reference temperature of the first temperature0-1＝1000℃；wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
The second temperature is: t is2＝950℃。
Comparative example 5
Heating the high-temperature-resistant alloy blank to be subjected to heat treatment to a first temperature in a heat treatment furnace, and then completely burning, and keeping the temperature for 70 min; cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace at the speed of 55 ℃/h; preserving heat for 60min, and then performing water cooling treatment; heating the water-cooled high-temperature-resistant alloy blank to 730 ℃ in a heat treatment furnace, and then preserving heat for 9 hours; and then cooling to 630 ℃ along with the furnace at the speed of 45 ℃/h, preserving heat for 9h, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Wherein the first temperature is: t is11050 deg.C; the second temperature is: t is2＝950℃。
Comparative example 6
Heating the high-temperature-resistant alloy blank to be heat-treated to 930-1000 ℃ in a heat treatment furnace, and soaking for 10 min; preserving the heat for 1h, and cooling in air; heating the high-temperature-resistant alloy blank to 710-730 ℃ in a heat treatment furnace, preserving heat for 9 hours, and air cooling; and heating to 610-630 ℃ immediately, preserving the heat for 10 hours, and then air cooling to obtain a finished product.
The high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.06%, Cr: 19.0%, Ni: 53%, Co: 1.0%, Mo: 2.80%, Al: 0.50%, Ti: 1.10%, Nb: 5.20%, B: 0.005%, Mg: 0.01%, Mn: 0.33%, Si: 0.30%, P: 0.015%, S: 0.015%, Cu: 0.30%, Ca: 0.01 percent, and the balance being Fe.
Mechanical property tests were performed on the finished products prepared in examples 1 to 3 and comparative examples 1 to 6, respectively, and the test results are shown in table 1.
TABLE 1 mechanical Property test results
As can be seen from table 1, in examples 1 to 3, the twice solid solution temperature in the heat treatment process of the high temperature resistant alloy is controlled according to the components of the high temperature resistant alloy through formula calculation, so that the yield strength and tensile strength of the high temperature resistant alloy material are remarkably improved; and the yield strength and tensile strength of the high-temperature resistant alloy prepared by the comparative example 1 (the first solid solution temperature is lower than the calculated value, and the second solid solution temperature is controlled by calculation according to a formula alone), the comparative example 2 (the first solid solution temperature is higher than the calculated value, and the second solid solution temperature is controlled by calculation according to a formula alone), the comparative example 3 (the first solid solution temperature is controlled by calculation according to a formula alone, and the second solid solution temperature is lower than the calculated value), the comparative example 4 (the first solid solution temperature is controlled by calculation according to a formula alone, and the second solid solution temperature is higher than the calculated value), the comparative example 5 (the first solid solution temperature and the second solid solution temperature are not controlled by calculation according to a formula) and the comparative example 6 (heat treatment is carried out according to a conventional process) are poorer. Wherein, the yield strength and tensile strength of the high-temperature resistant alloy prepared by the comparative example 6 (which is subjected to heat treatment according to the conventional process) are poorer and obviously lower than those of the high-temperature resistant alloy prepared by the process provided by the invention. The test results show that: the mechanical property of the high-temperature-resistant alloy can be improved by reasonably setting the heat treatment process of the high-temperature-resistant alloy; the solid solution temperature in the heat treatment process of the high-temperature resistant alloy is controlled according to the components of the high-temperature resistant alloy, so that the yield strength and the tensile strength of the high-temperature resistant alloy can be further improved.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (7)
1. A heat treatment method for a high-temperature-resistant alloy material is characterized by comprising the following steps:
step one, heating a high-temperature-resistant alloy blank to a first temperature, and then preserving heat;
step two, cooling the high-temperature-resistant alloy blank to a second temperature along with the furnace, and carrying out water cooling after heat preservation;
step three, heating the water-cooled high-temperature-resistant alloy blank to 720-740 ℃, and then preserving heat;
step four, cooling the high-temperature-resistant alloy material to 620-640 ℃ along with the furnace, preserving heat, and then air-cooling to obtain a finished product;
the high-temperature-resistant alloy comprises the following components in percentage by mass: c: 0.02-0.08%, Cr: 17.0-21.0%, Ni: 50% -55%, Co: 0-1.0%, Mo: 2.80-3.30%, Al: 0.30-0.70%, Ti: 0.75 to 1.15%, Nb: 4.75-5.50%, B: 0-0.006%, Mg: 0-0.01%, Mn: 0-0.35%, Si: 0-0.35%, P: 0-0.015%, S: 0-0.015%, Cu: 0-0.30%, Ca: 0-0.01% and the balance Fe;
the first temperature is:
wherein, T0-1A reference temperature, w, of the first temperatureNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al;
the second temperature is:
wherein, T0-2Is a reference temperature of the second temperature, wNiIs the mass fraction of Ni, wNbIs the mass fraction of Nb, wCrIs the mass fraction of Cr, wTiIs the mass fraction of Ti, wAlIs the mass fraction of Al.
2. The heat treatment method for the high-temperature resistant alloy material according to claim 1, wherein in the first step, the holding time is as follows: 60-80 min.
3. The heat treatment method for the high-temperature resistant alloy material according to claim 2, wherein in the second step, the holding time is as follows: 50-70 min.
4. The heat treatment method for the high-temperature-resistant alloy material according to claim 3, wherein in the second step, the high-temperature-resistant alloy blank is controlled to be cooled to a second temperature along with the furnace at a speed of 50-60 ℃/h.
5. The heat treatment method for the high-temperature-resistant alloy material as recited in claim 4, wherein in the third step, the heat preservation time is 8-9 h.
6. The heat treatment method for the high-temperature-resistant alloy material according to claim 5, wherein in the fourth step, the furnace cooling speed is controlled to be 40-50 ℃/h.
7. The heat treatment method for the high-temperature-resistant alloy material according to claim 6, wherein in the fourth step, the heat preservation time is 9-10 h.
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| CN106566952A (en) * | 2015-10-10 | 2017-04-19 | 丹阳市华龙特钢有限公司 | High temperature resistance forge piece with excellent nuclear power performance and production method thereof |
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