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Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha
Liu Liangliang1,2; Liu Dong1; Liu Renci1; Cui Yuyou1; Yang Rui1
Corresponding AuthorLiu Dong(dliu@imr.ac.cn)
2017-06-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume46Pages:95-98
AbstractThe Ti-47Al-2Cr-2Nb-0.15B (at%) alloy rod was fabricated by near isothermal canned hot extrusion at 1300 degrees C on a 3:1 extrusion ratio. With less refined microstructure including small equiaxed grain belt, remnant lamellar and coarse gamma grains in the band shape, the extrusion rod was heat-treated at 900, 1150 and 1310 degrees C separately. The tensile results at room and elevated temperature shows that samples by heat-treatment at 900 degrees C have the best balanced tensile properties with 3.3% elongation at RT. For those samples heat treated at 1150 degrees C with microstructure of near gamma and heat treated at 1310 degrees C with microstructure of near lamellar, their yield strength and ultimate tensile strength are lower than those heat treated at 900 degrees C. The remnant lamellar restricts the gamma grains from growing freely and keeps the microstructure with extrusion morphology at 900 degrees C.
KeywordTiAl alloy hot extrusion heat treatment microstructures tensile property
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000406570100020
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/124831
Collection中国科学院金属研究所
Corresponding AuthorLiu Dong
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Techn China, Sch Mat Sci & Engn, Shenyang 11006, Peoples R China
Recommended Citation
GB/T 7714
Liu Liangliang,Liu Dong,Liu Renci,et al. Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:95-98.
APA Liu Liangliang,Liu Dong,Liu Renci,Cui Yuyou,&Yang Rui.(2017).Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha.RARE METAL MATERIALS AND ENGINEERING,46,95-98.
MLA Liu Liangliang,et al."Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha".RARE METAL MATERIALS AND ENGINEERING 46(2017):95-98.
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