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Microstructural evolution and mechanical properties of forged beta-solidified gamma-TiAl alloy by different heat treatments
LI, Xiao-bing1; Xu, Hao2; Xing, Wei-wei3; Chen, Bo1; Shu, Lei1; Zhang, Meng-shu1; Liu, Kui1
Corresponding AuthorChen, Bo(chenbo@jihualab.ac.cn)
2022-07-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume32Issue:7Pages:2229-2242
AbstractThe microstructural evolution and tensile properties of a forged Ti-42Al-5Mn alloy subjected to different heat treatments were studied. The results showed that, when the forged alloy was aged at 800 degrees C for 24 h, the interlamellar spacing (lambda) and gamma grain size at colony boundaries are generally coarsened. Whereas, when the alloy was first annealed at 1300 degrees C and then aged at 800 degrees C for 24 h, this coarsening of related microstructures appears less pronounced. The suggested annealing temperatures for the forged Ti-42Al-5Mn alloy are in the range of 1250-1300 degrees C. It was found that, on the condition of the same annealing system, both the strength and ductility were improved as the aging temperature changed from 1000 to 800 degrees C. The secondary precipitated beta(o) (beta(o,sec)) at colony boundaries could be responsible for improving the strength, and the gamma phase at colony boundaries with the grain size about 6 mu m might be one of the main reasons for the better ductility.
Keywordbeta-solidifying gamma-TiAl alloy forge heat treatment microstructural evolution mechanical properties
Funding OrganizationJihua Laboratory Scientific Research Project, China ; National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province of China
DOI10.1016/S1003-6326(22)65943-0
Indexed BySCI
Language英语
Funding ProjectJihua Laboratory Scientific Research Project, China[X210291TL210] ; National Natural Science Foundation of China[51971215] ; Natural Science Foundation of Liaoning Province of China[2019 -MS -330]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000848487100002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/175101
Collection中国科学院金属研究所
Corresponding AuthorChen, Bo
Affiliation1.Ji Hua Lab, Adv Mfg Sci & Technol Guangdong Lab, Foshan 528200, Peoples R China
2.Nanjing Univ Sci & Technol, MIIT Key Lab Adv Met & Intermet Mat Technol, Nanjing 210094, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
LI, Xiao-bing,Xu, Hao,Xing, Wei-wei,et al. Microstructural evolution and mechanical properties of forged beta-solidified gamma-TiAl alloy by different heat treatments[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2022,32(7):2229-2242.
APA LI, Xiao-bing.,Xu, Hao.,Xing, Wei-wei.,Chen, Bo.,Shu, Lei.,...&Liu, Kui.(2022).Microstructural evolution and mechanical properties of forged beta-solidified gamma-TiAl alloy by different heat treatments.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,32(7),2229-2242.
MLA LI, Xiao-bing,et al."Microstructural evolution and mechanical properties of forged beta-solidified gamma-TiAl alloy by different heat treatments".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 32.7(2022):2229-2242.
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