CN104233141A - Annealing heat treatment process for eliminating stress after electronic beam welding of Ti2AlNb-based alloy - Google Patents
Annealing heat treatment process for eliminating stress after electronic beam welding of Ti2AlNb-based alloy Download PDFInfo
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- CN104233141A CN104233141A CN201310223833.XA CN201310223833A CN104233141A CN 104233141 A CN104233141 A CN 104233141A CN 201310223833 A CN201310223833 A CN 201310223833A CN 104233141 A CN104233141 A CN 104233141A
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- heat treatment
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Abstract
The invention aims to provide an annealing heat treatment process for eliminating stress after electronic beam welding of a Ti2AlNb-based alloy. The vacuum annealing heat treatment process is characterized by comprising the following parameters: the temperature of 800-850 DEG C is kept for 2-24 hours; the Ti2AlNb-based alloy is cooled down as the furnace is cooled down; and the vacuum degree of the vacuum annealing heat treatment is preferably 10<-3> to 10<-4> Pa. The heat treatment process can prevent the generation of cracks after the welding.
Description
Technical field
The invention belongs to high-temperature titanium alloy field, a kind of Ti is provided especially
2the annealing heat treatment process eliminated stress after the electrons leaves welding of AlNb base alloy.
Background technology
Compare with titanium alloy with traditional nickel base superalloy, Ti
2alNb alloy is a kind of novel light high-temperature structural material, has low (5.3 gram per centimeters of density
3), specific tenacity is high, and use temperature reaches 800-1000 ° of C.Adopt electrons leaves welding significantly can alleviate the weight of structural part.But Ti
2alNb alloy belongs to the intermetallic compound of fragility, if do not carried out PWHT of stress relieving, very easily ftractureing, thus affect joint quality under the effect of unrelieved stress after welding.
Summary of the invention
The object of the present invention is to provide a kind of Ti
2the annealing heat treatment process eliminated stress after the electrons leaves welding of AlNb base alloy, this thermal treatment process can avoid the appearance of postwelding crackle.
The present invention specifically provides a kind of Ti
2the annealing heat treatment process eliminated stress after the electrons leaves welding of AlNb base alloy, is characterized in that: vacuum annealing process of thermal treatment parameter is: 800-850 ° of C is incubated 2-24 hour furnace cooling.
Ti of the present invention
2the annealing heat treatment process eliminated stress after the electrons leaves welding of AlNb base alloy, is characterized in that: the heat treated vacuum tightness of described vacuum annealing is preferably 10
-3~ 10
-4pa.
Accompanying drawing explanation
The Ti of Fig. 1 750 ° of process in C/2 hour
2alNb welding joint;
The Ti of Fig. 2 900 ° of process in C/2 hour
2alNb welding joint.
Embodiment
Embodiment
Technic metal adopts the Ti that 3mm is thick
2alNb sheet alloy (nominal composition is Ti-22Al-24Nb-0.5Mo, at.%), more different vacuum annealing temperatures is on the impact (after thermal treatment equal furnace cooling) of Ti2AlNb alloy electro-beam welding joint.
Table 1 different heat treatment temperature is to Ti
2the impact of AlNb alloy welding joint
| Sequence number | Thermal treatment temp | Welding joint |
| 1 | 750 ° of C/2 hour | Crackle |
| 2 | 800 ° of C/2 hour | Well |
| 3 | 830 ° of C/2 hour | Well |
| 4 | 850 ° of C/2 hour | Well |
| 5 | 900 ° of C/2 hour | Crackle |
| 6 | 950 ° of C/2 hour | Crackle |
Experimental result shows: through the ageing treatment of sequence number 2-4, annealing temperature between 800-850 ° of C after can eliminate the appearance of postwelding crackle, and the thermal treatment of sequence number 1,5 and 6 can cause crackle to occur, sees Fig. 1 and Fig. 2.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (2)
1. a Ti
2the annealing heat treatment process eliminated stress after the electrons leaves welding of AlNb base alloy, is characterized in that: vacuum annealing process of thermal treatment parameter is: 800-850 ° of C is incubated 2-24 hour furnace cooling.
2. according to Ti described in claim 1
2the annealing heat treatment process eliminated stress after the electrons leaves welding of AlNb base alloy, is characterized in that: the heat treated vacuum tightness of described vacuum annealing is 10
-3~ 10
-4pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310223833.XA CN104233141A (en) | 2013-06-06 | 2013-06-06 | Annealing heat treatment process for eliminating stress after electronic beam welding of Ti2AlNb-based alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310223833.XA CN104233141A (en) | 2013-06-06 | 2013-06-06 | Annealing heat treatment process for eliminating stress after electronic beam welding of Ti2AlNb-based alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104233141A true CN104233141A (en) | 2014-12-24 |
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Family Applications (1)
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|---|---|---|---|
| CN201310223833.XA Pending CN104233141A (en) | 2013-06-06 | 2013-06-06 | Annealing heat treatment process for eliminating stress after electronic beam welding of Ti2AlNb-based alloy |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878331A (en) * | 2015-06-30 | 2015-09-02 | 北京航空航天大学 | Postweld heat treatment technology for titanium alloy welded joint |
| CN106048200A (en) * | 2016-08-19 | 2016-10-26 | 北京动力机械研究所 | Ti2AlNb-based alloy fusion welding joint heat treatment process |
| CN109396441A (en) * | 2018-11-30 | 2019-03-01 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of heat treatment method of electron beam welding selective laser fusing formation of parts |
| CN111702279A (en) * | 2020-05-13 | 2020-09-25 | 中国科学院金属研究所 | Ti2AlNb-based alloy and gamma-TiAl-based alloy dissimilar material brazing postweld heat treatment process |
| CN112091399A (en) * | 2020-09-21 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Ti2AlNb material electron beam weld joint micro-crack control method |
| CN113462997A (en) * | 2021-06-30 | 2021-10-01 | 中国航发动力股份有限公司 | Heat treatment method for improving weld performance after electron beam welding |
| CN113584294A (en) * | 2021-06-25 | 2021-11-02 | 西安热工研究院有限公司 | Post-weld stress relief treatment method for precipitation-strengthened high-temperature alloy |
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| US5190602A (en) * | 1991-12-17 | 1993-03-02 | The United States Of America As Represented By The Secretary Of Commerce | Heterophase titanium aluminides having orthorhombic and omega-type microstructures |
| EP0924308A1 (en) * | 1997-12-18 | 1999-06-23 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Titanium-based intermetallic alloys of the Ti2AlNb type with high yield strength and good creep resistance |
| CN101838785A (en) * | 2010-06-01 | 2010-09-22 | 中国航空工业集团公司北京航空材料研究院 | Post weld vacuum heat treatment process of TC18 titanium alloy welding component |
| CN102212766A (en) * | 2011-05-24 | 2011-10-12 | 哈尔滨工业大学 | Hot machining method for thinning Ti2AlNb-based alloy grains |
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Patent Citations (4)
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| US5190602A (en) * | 1991-12-17 | 1993-03-02 | The United States Of America As Represented By The Secretary Of Commerce | Heterophase titanium aluminides having orthorhombic and omega-type microstructures |
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Non-Patent Citations (1)
| Title |
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| 柯于斌等: ""Ti2AlNb基合金电子束焊接头的显微组织"", 《宇航材料工艺》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878331A (en) * | 2015-06-30 | 2015-09-02 | 北京航空航天大学 | Postweld heat treatment technology for titanium alloy welded joint |
| CN106048200A (en) * | 2016-08-19 | 2016-10-26 | 北京动力机械研究所 | Ti2AlNb-based alloy fusion welding joint heat treatment process |
| CN106048200B (en) * | 2016-08-19 | 2018-09-25 | 北京动力机械研究所 | Ti2AlNb based alloy joint made by flame welding heat treatment process |
| CN109396441A (en) * | 2018-11-30 | 2019-03-01 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of heat treatment method of electron beam welding selective laser fusing formation of parts |
| CN111702279A (en) * | 2020-05-13 | 2020-09-25 | 中国科学院金属研究所 | Ti2AlNb-based alloy and gamma-TiAl-based alloy dissimilar material brazing postweld heat treatment process |
| CN111702279B (en) * | 2020-05-13 | 2022-02-18 | 中国科学院金属研究所 | Ti2AlNb-based alloy and gamma-TiAl-based alloy dissimilar material brazing postweld heat treatment process |
| CN112091399A (en) * | 2020-09-21 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Ti2AlNb material electron beam weld joint micro-crack control method |
| CN112091399B (en) * | 2020-09-21 | 2022-04-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Ti2AlNb material electron beam weld joint micro-crack control method |
| CN113584294A (en) * | 2021-06-25 | 2021-11-02 | 西安热工研究院有限公司 | Post-weld stress relief treatment method for precipitation-strengthened high-temperature alloy |
| CN113462997A (en) * | 2021-06-30 | 2021-10-01 | 中国航发动力股份有限公司 | Heat treatment method for improving weld performance after electron beam welding |
| CN113462997B (en) * | 2021-06-30 | 2022-08-02 | 中国航发动力股份有限公司 | Heat treatment method for improving weld performance after electron beam welding |
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Application publication date: 20141224 |
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