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Microstructural Inhomogeneity and Mechanical Properties of Ti-6.4Al-3.3Mo-1.6Zr-0.2Si Alloy Fabricated by Laser Metal Deposition

文献类型：期刊论文

作者Yang, Bingyu4,5; Yang, Huajie4,5; Cai, Zhihai1; Ben, Dandan3; Liu, Jun1; Shao, Xiaohong2; Zhang, Peng4,5; Zhang, Zhefeng4,5
刊名ADVANCED ENGINEERING MATERIALS
出版日期2023-06-22
页码10
关键词additive manufacturing laser metal deposition mechanical properties microstructure titanium alloy
ISSN号1438-1656
DOI10.1002/adem.202300230
通讯作者Yang, Huajie(hjyang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要Laser metal deposition (LMD) additive manufacturing has gained growing interest in the aerospace industry. Herein, a Ti-6.4Al-3.3Mo-1.6Zr-0.2Si (TC11) titanium alloy is produced by LMD. The inhomogeneity of multiscale grain morphology and mechanical properties are systematically investigated. The results indicate that the melting pool (MP) morphology can be divided into three areas: melting pool center (MPC), melting pool boundary (MPB), and heat-affected zone (HAZ), respectively. The widths of & alpha; laths in MPB are larger than that in HAZ and MPC, which result in a lower microhardness in MPB than that in MPC. Besides, the columnar grains are generally distributed along the deposition direction. The average widths of the & alpha; laths in the top and bottom MPC regions are about 0.58 and 0.67 & mu;m, respectively. Correspondingly, the ultimate tensile strength and fracture elongation of the top and bottom samples are 1,053.5 MPa, 16.7%, and 1,011.5 MPa, 20.7%, respectively, which suggest the inhomogeneity of mechanical properties. The initiation fracture sites of both the top and bottom samples are presumed to be the & alpha; lath inside the MPB according to stress distribution analysis. The formation mechanisms of inhomogeneous grain structures and their influences on mechanical performance are also discussed.
资助项目National Natural Science Foundation of China[51975552] ; National Natural Science Foundation of China[52130002] ; National Natural Science Foundation of China[52130509] ; National Natural Science Foundation of China[2019-JCJQ-JJ-030] ; CAS Interdisciplinary Innovation Team[JCTD-2020-10]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:001011849600001
出版者WILEY-V C H VERLAG GMBH
资助机构National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team
源URL[http://ir.imr.ac.cn/handle/321006/178300]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, Huajie; Zhang, Zhefeng
作者单位1.Army Acad Armored Forces, Natl Engn Res Ctr Remfg, Beijing 100072, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
5.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Bingyu,Yang, Huajie,Cai, Zhihai,et al. Microstructural Inhomogeneity and Mechanical Properties of Ti-6.4Al-3.3Mo-1.6Zr-0.2Si Alloy Fabricated by Laser Metal Deposition[J]. ADVANCED ENGINEERING MATERIALS,2023:10.
APA Yang, Bingyu.,Yang, Huajie.,Cai, Zhihai.,Ben, Dandan.,Liu, Jun.,...&Zhang, Zhefeng.(2023).Microstructural Inhomogeneity and Mechanical Properties of Ti-6.4Al-3.3Mo-1.6Zr-0.2Si Alloy Fabricated by Laser Metal Deposition.ADVANCED ENGINEERING MATERIALS,10.
MLA Yang, Bingyu,et al."Microstructural Inhomogeneity and Mechanical Properties of Ti-6.4Al-3.3Mo-1.6Zr-0.2Si Alloy Fabricated by Laser Metal Deposition".ADVANCED ENGINEERING MATERIALS (2023):10.

入库方式： OAI收割

来源：金属研究所

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