CN104746145A - Heat treatment process of nickel base single crystal superalloy - Google Patents
Heat treatment process of nickel base single crystal superalloy Download PDFInfo
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- CN104746145A CN104746145A CN201310725901.2A CN201310725901A CN104746145A CN 104746145 A CN104746145 A CN 104746145A CN 201310725901 A CN201310725901 A CN 201310725901A CN 104746145 A CN104746145 A CN 104746145A
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- single crystal
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- crystal superalloy
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Abstract
The invention discloses a heat treatment process of nickel base single crystal superalloy. A differential thermal analysis method and metallographic test method are used to determine the incipient melting temperature of the alloy at 1280 DEG C; and an optical metalloscope is used for observation of the microstructure of alloy after different solid solution treatments, and the stress rupture properties of the alloy are tested. The results show that optimum heat treatment process of the alloy is as below: 1245 DEG C / 2h, AC+1275 DEG C / 4h, AC+1100 DEG C / 2h, AC+850 DEG C / 24h, AC. The single crystal superalloy treated by the process has excellent durability, and creep rupture life reaching 159.35h under 980 DEG C and 235MPa.
Description
Technical field
The invention belongs to casting technology field, be specifically related to a kind of thermal treatment process of nickel-base high-temperature single crystal alloy.
Background technology
Superalloy has higher hot strength, good oxidation-resistance and corrosion and heat resistant, excellent creep and fatigue resistance, good structure stability and work reliability, be widely used in the military fields such as Aeronautics and Astronautics, nuclear engineering and other equipment power, also have a large amount of uses at civil areas such as the energy, communications and transportation, petrochemical complex and metallurgy.Along with the development of aircraft engine, the performance requriements of high-temperature material is also improved constantly.Inappropriate thermal treatment process can make the intensity of alloy reduce, and initial melting temperature reduces, and using value reduces.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, a kind of thermal treatment process of nickel-base high-temperature single crystal alloy is provided, the initial melting temperature of alloy can be made to improve, improve using value.。
The thermal treatment process of nickel-base high-temperature single crystal alloy provided by the invention, comprises the following steps:
(1) homogenizing: 1240 ~ 1250 DEG C, insulation 2 ~ 4h;
(2) solution treatment: 1270 ~ 1280 DEG C, insulation 2 ~ 4h;
(3) timeliness: 1100 DEG C, insulation 2 ~ 4h;
(4) secondary ageing: 800 ~ 850 DEG C, insulation more than 24h;
(5) type of cooling: air cooling.
The thermal treatment process of nickel-base high-temperature single crystal alloy provided by the invention, its beneficial effect is, the initial melting temperature of alloy is raised, there is excellent mechanical behavior under high temperature, single crystal super alloy is made to have excellent enduring quality, 980 DEG C, under the condition of 235MPa creep rupture life reach 159.35h, improve its using value.
Embodiment
Below in conjunction with an embodiment, the thermal treatment process of nickel-base high-temperature single crystal alloy provided by the invention is described in detail.
Embodiment
The thermal treatment process of the nickel-base high-temperature single crystal alloy of the present embodiment, comprises the following steps:
(1) homogenizing: 1245 DEG C, insulation 2h;
(2) solution treatment: 1275 DEG C, insulation 4h;
(3) timeliness: 1100 DEG C, insulation 2h;
(4) secondary ageing: 850 DEG C, insulation 24h;
(5) type of cooling: air cooling.
Claims (1)
1. a thermal treatment process for nickel-base high-temperature single crystal alloy, is characterized in that: said method comprising the steps of:
Homogenizing: 1240 ~ 1250 DEG C, insulation 2 ~ 4h;
Solution treatment: 1270 ~ 1280 DEG C, insulation 2 ~ 4h;
A timeliness: 1100 DEG C, insulation 2 ~ 4h;
Secondary ageing: 800 ~ 850 DEG C, insulation more than 24h;
The type of cooling: air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725901.2A CN104746145A (en) | 2013-12-25 | 2013-12-25 | Heat treatment process of nickel base single crystal superalloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725901.2A CN104746145A (en) | 2013-12-25 | 2013-12-25 | Heat treatment process of nickel base single crystal superalloy |
Publications (1)
| Publication Number | Publication Date |
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| CN104746145A true CN104746145A (en) | 2015-07-01 |
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| CN201310725901.2A Pending CN104746145A (en) | 2013-12-25 | 2013-12-25 | Heat treatment process of nickel base single crystal superalloy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385973A (en) * | 2015-11-27 | 2016-03-09 | 钢铁研究总院 | Thermal treatment process for nickel-based superalloy |
| CN105543748A (en) * | 2015-12-30 | 2016-05-04 | 无锡透平叶片有限公司 | Heat treatment method for Nimonic101 nickel-based alloy |
| CN106119748A (en) * | 2016-08-29 | 2016-11-16 | 中航动力股份有限公司 | A kind of method preventing DD99 alloy monocrystalline blade from producing incipient melting defect |
| CN107805770A (en) * | 2017-10-17 | 2018-03-16 | 中国华能集团公司 | A kind of overaging Technology for Heating Processing suitable for cast superalloy |
| CN108396269A (en) * | 2018-03-02 | 2018-08-14 | 河北工业大学 | A kind of enhancing polycrystalline Ni3The heat treatment method of Al based high-temperature alloy deformation stabilities |
| CN109014215A (en) * | 2018-07-18 | 2018-12-18 | 西安交通大学 | A kind of heat treatment method of increasing material manufacturing monocrystal nickel-base high-temperature alloy |
-
2013
- 2013-12-25 CN CN201310725901.2A patent/CN104746145A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385973A (en) * | 2015-11-27 | 2016-03-09 | 钢铁研究总院 | Thermal treatment process for nickel-based superalloy |
| CN105543748A (en) * | 2015-12-30 | 2016-05-04 | 无锡透平叶片有限公司 | Heat treatment method for Nimonic101 nickel-based alloy |
| CN106119748A (en) * | 2016-08-29 | 2016-11-16 | 中航动力股份有限公司 | A kind of method preventing DD99 alloy monocrystalline blade from producing incipient melting defect |
| CN106119748B (en) * | 2016-08-29 | 2019-03-01 | 中航动力股份有限公司 | A method of prevent DD99 alloy monocrystalline blade from generating incipient melting defect |
| CN107805770A (en) * | 2017-10-17 | 2018-03-16 | 中国华能集团公司 | A kind of overaging Technology for Heating Processing suitable for cast superalloy |
| CN107805770B (en) * | 2017-10-17 | 2020-01-07 | 中国华能集团公司 | Overaging heat treatment process suitable for casting high-temperature alloy |
| CN108396269A (en) * | 2018-03-02 | 2018-08-14 | 河北工业大学 | A kind of enhancing polycrystalline Ni3The heat treatment method of Al based high-temperature alloy deformation stabilities |
| CN108396269B (en) * | 2018-03-02 | 2019-11-08 | 河北工业大学 | A kind of enhancing polycrystalline Ni3The heat treatment method of Al based high-temperature alloy deformation stability |
| CN109014215A (en) * | 2018-07-18 | 2018-12-18 | 西安交通大学 | A kind of heat treatment method of increasing material manufacturing monocrystal nickel-base high-temperature alloy |
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Application publication date: 20150701 |
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| WD01 | Invention patent application deemed withdrawn after publication |