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Effects of multi-pass drawing strain and heat treatment on microstructure, texture and mechanical properties of Ti-6Al-4V alloy
Hu, Ming; Dong, Limin; Zhang, Zhiqiang; Lei, Xiaofei; Yang, Rui; Sha, Yuhui
2019-05-29
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume757Pages:70-83
AbstractIn this study, a rolled Ti-6Al-4V alloy bar was processed by multi-pass drawing till 60% strain. The drawn state specimens were annealed and solid solution aged. The microstructure evolution characteristics, texture evolution features and mechanical properties changes were systematically investigated. During drawing, alpha grains were gradually elongated and beta grains were split. The alpha phase developed a fiber texture with < 01<(1)over bar>0 > parallel to the drawing direction, and the texture intensity increased with increasing the strain. The yield strength and ultimate tensile strength increased up to 1164 MPa and 1235 MPa respectively with increasing the strain. Annealing resulted in the recovery and the recrystallization of alpha grains and globularization of partial beta grains. The intensity of < 01<(1)over bar>0 > fiber texture decreased compared to the drawn state specimens. The tensile strength decreased and the ductility increased compared to the drawn state specimens and the strength followed the Hall-Petch relationship. After solid solution aging heat treatment, the microstructure consisted of primary alpha grains and transformed beta grains. The tensile strength was obviously higher than the annealed state due to smaller alpha plates thickness and dispersion strengthening effects. Refinement of transformed beta grains and alpha plates thickness led to the higher tensile strength in the higher strain specimens.
KeywordTi-6Al-4V alloy Multi-pass drawing Microstructure Texture Mechanical properties
Indexed BySCI
Language英语
WOS IDWOS:000470944600008
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81077
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Hu, Ming,Dong, Limin,Zhang, Zhiqiang,et al. Effects of multi-pass drawing strain and heat treatment on microstructure, texture and mechanical properties of Ti-6Al-4V alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,757:70-83.
APA Hu, Ming,Dong, Limin,Zhang, Zhiqiang,Lei, Xiaofei,Yang, Rui,&Sha, Yuhui.(2019).Effects of multi-pass drawing strain and heat treatment on microstructure, texture and mechanical properties of Ti-6Al-4V alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,757,70-83.
MLA Hu, Ming,et al."Effects of multi-pass drawing strain and heat treatment on microstructure, texture and mechanical properties of Ti-6Al-4V alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 757(2019):70-83.
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