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Ultrafine grained metastable Ti6Al4V5Cu alloy with high strength and excellent low-cycle fatigue property
Song, Wei1,2; Wang, Hai1; Li, Yi1,2; Zhang, Shuyuan1; Ren, Ling1; Yang, Ke1
Corresponding AuthorRen, Ling(lren@imr.ac.cn)
2022-12-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume129Pages:240-250
AbstractThe insufficient low-cycle fatigue properties of titanium alloys under cyclic heavy loading are regarded as a challenge for their security in service. In recent years, a large number of studies have found that the transformation induced plasticity (TRIP) effect could hinder the propagation of fatigue cracks, which significantly improved the low-cycle fatigue properties of titanium alloys. However, the coarse beta-phase grains and the soft phase transformation product a alpha '' phase in TRIP titanium alloys impair their tensile strength, which restrict their applications in engineering. To this end, a Ti6Al4V5Cu alloy with TRIP effect was developed in this work. It was proposed to use the mutual restraint between the alpha and beta-phases in the material to refine the grains, and through composition optimization, the phase transformation product would be the alpha' phase, which has a higher strength than the a alpha '' phase. Thus, the strength of the Ti6Al4V5Cu alloy can be improved. The results showed that the tensile strength and elongation of the TRIP Ti6Al4V5Cu alloy was 1286 MPa and 22%, which was 23.7% and 46.7% higher than that of the traditional Ti6Al4V alloy, respectively. Besides, under the same strain amplitude, the fatigue life of the Ti6Al4V5Cu alloy was 2-5 times longer than that of the Ti6Al4V alloy. Furthermore, we clarified the mechanisms of improving the tensile strength and fatigue properties of the Ti6Al4V5Cu alloy, which would lay a research foundation for the development of high-performance titanium alloys. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordTransformation induced plasticity Ti alloys Low-cycle fatigue Work hardening Crack propagation
Funding OrganizationNational Key Research and Development Program of China ; Natural Science Foundation of China ; Liaoning Revitalization Talents Program ; Doctoral Scientific Research Foundation of Liaoning Province ; Binzhou Weiqiao Guoke Institute of Advanced Technology
DOI10.1016/j.jmst.2022.05.007
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFC1106600] ; Natural Science Foundation of China[51631009] ; Liaoning Revitalization Talents Program[XLYC1807069] ; Doctoral Scientific Research Foundation of Liaoning Province[2020BS002] ; Binzhou Weiqiao Guoke Institute of Advanced Technology
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000810926900009
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174363
Collection中国科学院金属研究所
Corresponding AuthorRen, Ling
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Song, Wei,Wang, Hai,Li, Yi,et al. Ultrafine grained metastable Ti6Al4V5Cu alloy with high strength and excellent low-cycle fatigue property[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,129:240-250.
APA Song, Wei,Wang, Hai,Li, Yi,Zhang, Shuyuan,Ren, Ling,&Yang, Ke.(2022).Ultrafine grained metastable Ti6Al4V5Cu alloy with high strength and excellent low-cycle fatigue property.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,129,240-250.
MLA Song, Wei,et al."Ultrafine grained metastable Ti6Al4V5Cu alloy with high strength and excellent low-cycle fatigue property".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 129(2022):240-250.
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