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Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet

文献类型：期刊论文

作者Cheng, Chao1,2; Chen, Zhiyong1,2; Li, Hong En3; Wang, Xin4; Zhu, Shaoxiang1,2; Wang, Qingjiang1,2
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2021-01-07
卷号800页码:14
ISSN号0921-5093
关键词TA32 sheet Vacuum superplastic deformation Constitutive equation Microstructure and texture Deformation behavior
通讯作者Chen, Zhiyong(zhiyongchen@imr.ac.cn)
英文摘要The superplastic deformation and microstructure characterization of a near alpha titanium alloy TA32 sheet with a nominal composition of Ti-5.5Al-3.5Sn-3Zr-1Mo-0.5Nb-0.7Ta-0.3Si in vacuum environment were systematically investigated. The maximum superplastic elongation was obtained to be 702% at 940 ?C with a strain rate of 3.33 x 10-3 s-1. The superplastic deformation constitutive equation was established and the average apparent activation energy (Q) and strain rate sensitivity (m) were calculated to be 316.3 kJ/mol and 0.46, respectively. The spheroidizing process of alpha lath was accelerated by dynamic globularization (DG). Active dislocation motion was observed and developed an attractive interaction with Silicides ((TiZr)6Si3). Transformation of low angle grain boundaries (LAGBs,2? < 15?) to high angle boundaries (HAGBs, theta 15?) was promoted by dynamic recrystallization (DRX). Significant change in texture intensity of B-type and R-type texture was observed after superplastic deformation, which was attributed to grain rotation. Superplastic deformation of TA32 sheet was mainly controlled by grain boundary sliding (GBS) along with kinds of accommodation processes, including DG, DRX, dislocation motion, grain rotation and grain growth. Superscript/Subscript Available
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000593914500001
源URL[http://ir.imr.ac.cn/handle/321006/141487]  
专题金属研究所_中国科学院金属研究所
通讯作者Chen, Zhiyong
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Shenyang Aircraft Design & Res Inst, Shenyang 110035, Peoples R China
4.Baoji Titanium Ind Co Ltd, Baoji 721000, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Chao,Chen, Zhiyong,Li, Hong En,et al. Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,800:14.
APA Cheng, Chao,Chen, Zhiyong,Li, Hong En,Wang, Xin,Zhu, Shaoxiang,&Wang, Qingjiang.(2021).Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,800,14.
MLA Cheng, Chao,et al."Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 800(2021):14.

入库方式： OAI收割

来源：金属研究所

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