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Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting
Xia, Zhizhou1,2; Cui, Yuyou1; Shen, Yingying1; Arroussi, Mohammed1,2; Liu, Ronghua1; Yang, Liang1; Jia, Qing1; Yang, Rui1
Corresponding AuthorYang, Rui(ryang@imr.ac.cn)
2022-01-07
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume830Pages:11
AbstractTi-48Al-2Cr-2Nb (at. pet) billet was prepared by suction casting into a cold steel mould, and its microstructures and mechanical properties at room and elevated temperatures were investigated. The billet featured lamellar microstructure with refined colony sizes, fine interlamellar spacing, and lamellar interfaces nearly parallel to the mould surface with a scatter angle within 30 degrees. Benefitting from this microstructure, the billet showed excellent mechanical properties at temperatures up to 850 degrees C, with yield strength of 629 +/- 29 MPa at ambient temperature, 549 +/- 14 MPa at 650 degrees C, 565 +/- 17 MPa at 700 degrees C, 475 +/- 6 MPa at 800 degrees C and 413 +/- 9 MPa at 850 degrees C, comparable to that of the third-generation TiAl alloys like TNM but much superior to that of most reported cast Ti-48Al-2Cr-2Nb alloys. The total fracture elongation at room temperature and 700 degrees C were (1.8 +/- 0.2) % and (15.9 +/- 3.5) %, respectively. Although the fracture at 700 degrees C occurred in a brittle mode, the tensile samples possessed ductile tensile elongation.
KeywordTiAl alloy Oriented lamellar microstructure Lamellar spacing Tensile properties Fracture behavior
DOI10.1016/j.msea.2021.142303
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000730159200003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167323
Collection中国科学院金属研究所
Corresponding AuthorYang, Rui
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230022, Peoples R China
Recommended Citation
GB/T 7714
Xia, Zhizhou,Cui, Yuyou,Shen, Yingying,et al. Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,830:11.
APA Xia, Zhizhou.,Cui, Yuyou.,Shen, Yingying.,Arroussi, Mohammed.,Liu, Ronghua.,...&Yang, Rui.(2022).Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,830,11.
MLA Xia, Zhizhou,et al."Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 830(2022):11.
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