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

doi:10.1002/adem.202300230

IMR OpenIR

	Microstructural Inhomogeneity and Mechanical Properties of Ti-6.4Al-3.3Mo-1.6Zr-0.2Si Alloy Fabricated by Laser Metal Deposition
	Yang, Bingyu 1,2; Yang, Huajie 1,2; Cai, Zhihai 3; Ben, Dandan 4; Liu, Jun 3; Shao, Xiaohong 5; Zhang, Peng 1,2; Zhang, Zhefeng 1,2
通讯作者	Yang, Huajie(hjyang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
	2023-06-22
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
页码	10
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.
关键词	additive manufacturing laser metal deposition mechanical properties microstructure titanium alloy
资助者	National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team
DOI	10.1002/adem.202300230
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001011849600001
出版者	WILEY-V C H VERLAG GMBH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178301
专题	中国科学院金属研究所
通讯作者	Yang, Huajie; Zhang, Zhefeng
作者单位	1.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 3.Army Acad Armored Forces, Natl Engn Res Ctr Remfg, Beijing 100072, Peoples R China 4.Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 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.