Effects of temperature on tensile and fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion

doi:10.1016/j.tafmec.2023.103931

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Effects of temperature on tensile and fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion
	Xiao YM(肖应梦); Qian GA(钱桂安); Sun JY(孙经雨); Berto, Filippo ; Correia, JoseAF ; Hong YS(洪友士)
刊名	THEORETICAL AND APPLIED FRACTURE MECHANICS
	2023-06-01
卷号	125 页码:103931
关键词	Ti6Al4V alloy Temperature effect Fracture property Tensile strength Laser powder bed fusion
ISSN号	0167-8442
DOI	10.1016/j.tafmec.2023.103931
英文摘要	Research on low temperature resistance and fracture behavior of additively manufactured (AMed) titanium alloy is lacking. In this study, both tensile and fracture behavior of Ti6Al4V alloy produced by laser powder bed fusion (LPBF) were investigated at four temperatures (293, 223, 173, 123 K). Microscopic observation and finite element analysis were used to study the fracture mechanism. A correlation of fracture toughness and temperature between 123 and 293 K was obtained. As the temperature decreases, the fracture mode of the specimen changes from ductile fracture to a mixed mode of ductile and brittle fracture, the tensile strength increases and the fracture toughness decreases. These differences could be interpreted by the crack tip plastic zone (CTPZ) and microscopic plastic deformation. Compared to the wrought Ti6Al4V alloy, the fracture originations are mainly from LPBF defects, i.e., lack of fusion (LOF) defects and gas pores.
分类号	一类
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:001053310200001
资助机构	National Natural Science Foundation of China [12072345, J2019 -VI -0012-0126] ; National Science and Technol- ogy Major Project [P2022 -B -III -008-001] ; Science Center for Gas Turbine Project ; [11932020]
其他责任者	Qian, GA (corresponding author), Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92648]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.{Correia Jose A. F.} Univ Porto Construt & Fac Engn Porto Portugal 2.{Berto Filippo} Norwegian Univ Sci & Technol NTNU Dept Mech & Ind Engn Richard Birkelands Vei 2b N-7491 Trondheim Norway 3.{Xiao Yingmeng, Qian Guian, Sun Jingyu, Hong Youshi} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 4.{Xiao Yingmeng, Qian Guian, Sun Jingyu, Hong Youshi} Chinese Acad Sci State Key Lab Nonlinear Mech LNM Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Xiao YM,Qian GA,Sun JY,et al. Effects of temperature on tensile and fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2023,125:103931.
APA	肖应梦,钱桂安,孙经雨,Berto, Filippo,Correia, JoseAF,&洪友士.(2023).Effects of temperature on tensile and fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion.THEORETICAL AND APPLIED FRACTURE MECHANICS,125,103931.
MLA	肖应梦,et al."Effects of temperature on tensile and fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion".THEORETICAL AND APPLIED FRACTURE MECHANICS 125(2023):103931.