CN103695721B - A kind of high strength, nickel based Alloy And Preparation Method - Google Patents
A kind of high strength, nickel based Alloy And Preparation Method Download PDFInfo
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- CN103695721B CN103695721B CN201410018657.0A CN201410018657A CN103695721B CN 103695721 B CN103695721 B CN 103695721B CN 201410018657 A CN201410018657 A CN 201410018657A CN 103695721 B CN103695721 B CN 103695721B
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Abstract
The present invention relates to a kind of high strength, nickel based alloy, its chemical composition contains by weight percentage: Al:3.2 ~ 6.8%, Cr:21 ~ 28%, B:3.0 ~ 4.2%, Si:1.2 ~ 1.9%, C:0.08 ~ 0.2%, Mo:1.8 ~ 2.8%, Nb:1.2 ~ 2.1%, Ta:1.0 ~ 1.8%, Ti:0.08 ~ 0.98%, Fe:3.2 ~ 5.8%, RE:0.2 ~ 0.38%, Cu:0.8 ~ 1.2%, Mn:0.002 ~ 0.08%, surplus is Ni and inevitable impurity; What by the collocation of specific alloy and preparation method, described high strength, nickel based alloy obtained that specific microtexture makes this high strength, nickel based alloy has good intensity and toughness, and has good high-temperature behavior.
Description
Technical field
The invention belongs to field of alloy material, particularly relate to a kind of high strength, nickel based Alloy And Preparation Method.
Background technology
In current industrial circle, there is the severe environmental conditions such as a large amount of abrasion and corrosions, for the requirement of machine work under adaptation extreme operating environments, often need to carry out thermal spraying treatment to the surface of component, nickel-base alloy is widely used in the thermal spraying material of piece surface owing to having good wear resistance and corrosion resistance, but in actual applications, it also has very high requirement to intensity, but when intensity improves, often to have an impact to toughness.
China Patent No. 98116301 is that a kind of applicable manufacture is for welding the nickel-base alloy wiry of super duplex or super austenitic stainless steel, point out that composition is 24.5% < Cr≤26.5%, 13.5≤Mo≤16.5%, the impurity that surplus is nickel, one or more optional assistant alloy compositions and technique are brought into, this assistant alloy composition is selected from nitrogen, aluminium and magnesium, and the electrode manufactured thus.But same, when its intensity improves, high-temperature behavior is unsatisfactory, and toughness can not meet day by day various application.
Summary of the invention
An object of the present invention is to propose a kind of high strength, nickel based alloy;
Two of object of the present invention is the preparation method proposing a kind of high strength, nickel based alloy;
For reaching this object, the present invention by the following technical solutions:
A kind of high strength, nickel based alloy, its chemical composition contains by weight percentage: Al:3.2 ~ 6.8%, Cr:21 ~ 28%, B:3.0 ~ 4.2%, Si:1.2 ~ 1.9%, C:0.08 ~ 0.2%, Mo:1.8 ~ 2.8%, Nb:1.2 ~ 2.1%, Ta:1.0 ~ 1.8%, Ti:0.08 ~ 0.98%, Fe:3.2 ~ 5.8%, RE:0.2 ~ 0.38%, Cu:0.8 ~ 1.2%, Mn:0.002 ~ 0.08%, surplus is Ni and inevitable impurity;
In the microtexture of described high strength, nickel based alloy, the area percentage of γ sosoloid shared by each cross section of alloy is 1.2 ~ 2.8%, Ni
3the area percentage of Al phase shared by each cross section of alloy is 0.8 ~ 1.1%, Ni
3the area percentage of (Al, Ti) strengthening phase shared by each cross section of alloy is 0.58 ~ 1.25%, γ ' (Ni
3al) area percentage mutually in the alloy shared by heart cross section is 0.02 ~ 0.032%;
The yield strength of described high strength, nickel based alloy is 560 ~ 610MPa, tensile strength 780 ~ 820MPa, unit elongation 42 ~ 51%, the impelling strength 98 ~ 102J/cm of 20 DEG C
2.
As preferably, the chemical composition of described high strength, nickel based alloy contains by weight percentage: Al:4.8%, Cr:26%, B:3.8%, Si:1.6%, C:0.18%, Mo:2.28%, Nb:1.91%, Ta:1.7%, Ti:0.28%, Fe:4.8%, RE:0.28%, Cu:0.98%, Mn:0.006%, surplus is Ni and inevitable impurity.
As preferably, described RE is rare earth element y.
As preferably, described RE is cerium-rich mischmetal.
A preparation method for high strength, nickel based alloy, is characterized in that, comprises the steps:
(1) melting, gets the raw materials ready according to the chemical composition of aforementioned high strength, nickel based alloy, adopts vacuum induction, the associating smelting technology of esr and vacuum consumable remelting smelts;
(2) cast, the molten metal that melting obtains is cast;
(3) forge, carry out conventional die forging;
(4) homogenizing, the homogenizing of first stage is carried out at 1120 ~ 1160 DEG C of insulation 15 ~ 22h, and then being warmed up to 1180 ~ 1190 DEG C, insulation 20 ~ 25h carries out the homogenizing of subordinate phase, and then cools to the homogenizing that 1120 ~ 1160 DEG C of insulation 18 ~ 24h carry out the phase III;
(5) ausrolling, rolling temperature is 980 ~ 1030 DEG C, and rolling pass is 5 ~ 8;
(6) aging strengthening model, carries out three step aging strengthening model by the rolled plate that step (5) obtains, and the first step is at 710 ~ 720 DEG C of insulation 6 ~ 8h, after cooling to 610 ~ 620 DEG C with the furnace with 50 ~ 60 DEG C/h subsequently, and insulation 7 ~ 9h, air cooling is to room temperature; Second step is for being heated to 660 ~ 680 DEG C of insulation 5 ~ 7h by sheet material, after cooling to 580 ~ 600 DEG C with the furnace with 55 ~ 65 DEG C/h subsequently, be incubated 5 ~ 7h, air cooling is to room temperature; 3rd step is for being heated to 600 ~ 620 DEG C of insulation 6 ~ 8h by sheet material, after cooling to 550 ~ 570 DEG C with the furnace with 45 ~ 55 DEG C/h subsequently, insulation 5 ~ 7h, air cooling, to room temperature, obtains high strength, nickel based alloy.
As preferably, the pouring temperature of described casting is 1380 ~ 1420 DEG C.
As preferably, the temperature of described melting is 1610 ~ 1720 DEG C.
effect of the present invention is:
Arranged in pairs or groups by content element being carried out to selection and concrete element, alloy property is increased dramatically;
By specific preparation method, especially specific timeliness and Homogenization Treatments, make the microtexture in alloy have reasonable layout, and not only intensity is largely increased, and toughness is also better improved;
By coordinating of concrete preparation method's thermal treatment and concrete alloying constituent and content, make microtexture obtain reasonable layout, high-temperature behavior is also largely increased.
Embodiment
embodiment 1
A kind of high strength, nickel based alloy, its chemical composition contains by weight percentage: Al:5.8%, Cr:27%, B:3.0 ~ 4.2%, Si:1.8%, C:0.18%, Mo:1.9%, Nb:1.9%, Ta:1.6%, Ti:0.71%, Fe:4.8%, Y:0.28%, Cu:0.8%, Mn:0.06%, surplus is Ni and inevitable impurity;
In the microtexture of described high strength, nickel based alloy, the area percentage of γ sosoloid shared by each cross section of alloy is 1.8%, Ni
3the area percentage of Al phase shared by each cross section of alloy is 0.98%, Ni
3the area percentage of (Al, Ti) strengthening phase shared by each cross section of alloy is 1.05%, γ ' (Ni
3al) area percentage mutually in the alloy shared by heart cross section is 0.03%;
The yield strength of described high strength, nickel based alloy is 580MPa, tensile strength 790MPa, unit elongation 46%, the impelling strength 99J/cm of 20 DEG C
2.
embodiment 2:
A kind of high strength, nickel based alloy, its chemical composition contains by weight percentage: Al:4.8%, Cr:26%, B:3.8%, Si:1.6%, C:0.18%, Mo:2.28%, Nb:1.91%, Ta:1.7%, Ti:0.28%, Fe:4.8%, RE:0.28%, Cu:0.98%, Mn:0.006%, surplus is Ni and inevitable impurity; Wherein, RE is cerium-rich mischmetal;
In the microtexture of described high strength, nickel based alloy, the area percentage of γ sosoloid shared by each cross section of alloy is 1.25%, Ni
3the area percentage of Al phase shared by each cross section of alloy is 0.88%, Ni
3the area percentage of (Al, Ti) strengthening phase shared by each cross section of alloy is 1.15%, γ ' (Ni
3al) area percentage mutually in the alloy shared by heart cross section is 0.032%;
The yield strength of described high strength, nickel based alloy is 605MPa, tensile strength 811MPa, unit elongation 43%, the impelling strength 99J/cm of 20 DEG C
2.
embodiment 3:
A preparation method for high strength, nickel based alloy, is characterized in that, comprises the steps:
(1) melting, gets the raw materials ready according to the chemical composition of aforementioned high strength, nickel based alloy, and adopt vacuum induction, the associating smelting technology of esr and vacuum consumable remelting smelts, the temperature of melting is 1640 DEG C;
(2) cast, cast to the molten metal that melting obtains, pouring temperature is 1390 DEG C;
(3) forge, carry out conventional die forging;
(4) homogenizing, carry out the homogenizing of first stage at 1120 DEG C of insulation 18h, and then be warmed up to 1185 DEG C, insulation 22h carries out the homogenizing of subordinate phase, and then cools to the homogenizing that 1130 DEG C of insulation 21h carry out the phase III;
(5) ausrolling, rolling temperature is 990 DEG C, and rolling pass is 6;
(6) aging strengthening model, carries out three step aging strengthening model by the rolled plate that step (5) obtains, and the first step is at 715 DEG C of insulation 6 ~ 8h, after cooling to 615 DEG C with the furnace with 55 DEG C/h subsequently, and insulation 8h, air cooling is to room temperature; Second step is for being heated to 670 DEG C of insulation 6h by sheet material, after cooling to 590 DEG C with the furnace with 60 DEG C/h subsequently, be incubated 6h, air cooling is to room temperature; 3rd step is for being heated to 610 DEG C of insulation 7h by sheet material, after cooling to 560 DEG C with the furnace with 50 DEG C/h subsequently, insulation 6h, air cooling, to room temperature, obtains high strength, nickel based alloy.
Claims (7)
1. a high strength, nickel based alloy, is characterized in that: its chemical composition contains by weight percentage: Al:3.2 ~ 6.8%, Cr:21 ~ 28%, B:3.0 ~ 4.2%, Si:1.2 ~ 1.9%, C:0.08 ~ 0.2%, Mo:1.8 ~ 2.8%, Nb:1.2 ~ 2.1%, Ta:1.0 ~ 1.8%, Ti:0.08 ~ 0.98%, Fe:3.2 ~ 5.8%, RE:0.2 ~ 0.38%, Cu:0.8 ~ 1.2%, Mn:0.002 ~ 0.08%, surplus is Ni and inevitable impurity;
In the microtexture of described high strength, nickel based alloy, the area percentage of γ sosoloid shared by each cross section of alloy is 1.2 ~ 2.8%, Ni
3the area percentage of Al phase shared by each cross section of alloy is 0.8 ~ 1.1%, Ni
3the area percentage of (Al, Ti) strengthening phase shared by each cross section of alloy is 0.58 ~ 1.25%, γ ' (Ni
3al) area percentage mutually in the alloy shared by heart cross section is 0.02 ~ 0.032%;
The yield strength of described high strength, nickel based alloy is 560 ~ 610MPa, tensile strength 780 ~ 820MPa, unit elongation 42 ~ 51%, the impelling strength 98 ~ 102J/cm of 20 DEG C
2.
2. high strength, nickel based alloy according to claim 1, is characterized in that: the chemical composition of described high strength, nickel based alloy contains by weight percentage: Al:4.8%, Cr:26%, B:3.8%, Si:1.6%, C:0.18%, Mo:2.28%, Nb:1.91%, Ta:1.7%, Ti:0.28%, Fe:4.8%, RE:0.28%, Cu:0.98%, Mn:0.006%, surplus is Ni and inevitable impurity.
3. high strength, nickel based alloy according to claim 1 and 2, is characterized in that: described RE is rare earth element y.
4. high strength, nickel based alloy according to claim 1 and 2, is characterized in that: described RE is cerium-rich mischmetal.
5. a preparation method for high strength, nickel based alloy described in any one of claim 1 ~ 4, is characterized in that, comprise the steps:
(1) melting, gets the raw materials ready according to the chemical composition of high strength, nickel based alloy described in any one of claim 1 ~ 4, adopts vacuum induction, the associating smelting technology of esr and vacuum consumable remelting smelts;
(2) cast, the molten metal that melting obtains is cast;
(3) forge, carry out conventional die forging;
(4) homogenizing, the homogenizing of first stage is carried out at 1120 ~ 1160 DEG C of insulation 15 ~ 22h, and then being warmed up to 1180 ~ 1190 DEG C, insulation 20 ~ 25h carries out the homogenizing of subordinate phase, and then cools to the homogenizing that 1120 ~ 1160 DEG C of insulation 18 ~ 24h carry out the phase III;
(5) ausrolling, rolling temperature is 980 ~ 1030 DEG C, and rolling pass is 5 ~ 8;
(6) aging strengthening model, carries out three step aging strengthening model by the rolled plate that step (5) obtains, and the first step is at 710 ~ 720 DEG C of insulation 6 ~ 8h, after cooling to 610 ~ 620 DEG C with the furnace with 50 ~ 60 DEG C/h subsequently, and insulation 7 ~ 9h, air cooling is to room temperature; Second step is for being heated to 660 ~ 680 DEG C of insulation 5 ~ 7h by sheet material, after cooling to 580 ~ 600 DEG C with the furnace with 55 ~ 65 DEG C/h subsequently, be incubated 5 ~ 7h, air cooling is to room temperature; 3rd step is for being heated to 600 ~ 620 DEG C of insulation 6 ~ 8h by sheet material, after cooling to 550 ~ 570 DEG C with the furnace with 45 ~ 55 DEG C/h subsequently, insulation 5 ~ 7h, air cooling, to room temperature, obtains high strength, nickel based alloy.
6. the preparation method of high strength, nickel based alloy according to claim 5, is characterized in that, the pouring temperature of described casting is 1380 ~ 1420 DEG C.
7. the preparation method of high strength, nickel based alloy according to claim 6, is characterized in that, the temperature of described melting is 1610 ~ 1720 DEG C.
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| CN104745992B (en) * | 2015-04-26 | 2016-10-05 | 北京金恒博远冶金技术发展有限公司 | The heat treatment method of engine turbine high temperature alloy |
| CN105925849B (en) * | 2016-05-04 | 2017-10-13 | 中国第一重型机械股份公司 | A kind of control method of 700 DEG C of ultra-supercritical steam turbine rotors nickel-base alloy forging |
| CN107523772B (en) * | 2016-06-22 | 2019-06-11 | 中国科学院金属研究所 | A Homogenization Process of U720Li Superalloy |
| CN106636760B (en) * | 2017-01-16 | 2019-01-08 | 宁国市华成金研科技有限公司 | A kind of nickel base superalloy and its manufacturing method |
| CN110863099B (en) * | 2019-10-31 | 2021-09-21 | 河钢股份有限公司 | Heat treatment process for improving impact toughness of nickel-iron-based high-temperature alloy plate |
| CN110983111A (en) * | 2019-12-31 | 2020-04-10 | 江苏新华合金有限公司 | Nickel-based high-temperature alloy plate and preparation method thereof |
| CN112139415B (en) * | 2020-09-16 | 2022-04-19 | 江苏隆达超合金航材有限公司 | Method for producing difficult-to-deform nickel-based high-temperature alloy through compensation heating assisted free forging |
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| CN103205605A (en) * | 2013-04-08 | 2013-07-17 | 武汉索力特科技有限公司 | High-temperature-oxidation-resistant casting nickel-based alloy and preparation method thereof |
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| JP4981212B2 (en) * | 2001-01-25 | 2012-07-18 | 三菱重工業株式会社 | Ni-based alloy |
| US20070095441A1 (en) * | 2005-11-01 | 2007-05-03 | General Electric Company | Nickel-base alloy, articles formed therefrom, and process therefor |
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| US5389165A (en) * | 1991-05-14 | 1995-02-14 | Reynolds Metals Company | Low density, high strength Al-Li alloy having high toughness at elevated temperatures |
| CN102719708A (en) * | 2012-07-12 | 2012-10-10 | 丹阳市协昌合金有限公司 | Laser-cladding high-toughness high-hardness nickel-base alloy powder and preparation method thereof |
| CN103205605A (en) * | 2013-04-08 | 2013-07-17 | 武汉索力特科技有限公司 | High-temperature-oxidation-resistant casting nickel-based alloy and preparation method thereof |
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