Effect of constraint on fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion

doi:10.1016/j.tafmec.2024.104459

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

	Effect of constraint on fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion
	Xiao YM(肖应梦); Sun JY(孙经雨); Qian GA(钱桂安)
刊名	THEORETICAL AND APPLIED FRACTURE MECHANICS
	2024-06-01
卷号	131 页码:11
关键词	Laser powder bed fusion Fracture property Constraint effect Ti6Al4V alloy K-T-11-T-33 method
ISSN号	0167-8442
DOI	10.1016/j.tafmec.2024.104459
通讯作者	Qian, Guian(qianguian@imech.ac.cn)
英文摘要	Laser powder bed fusion (LPBF) is increasingly being used as an alternative to traditional manufacturing in the aerospace and biomedical industries. The effect of constraint on fracture performance is a crucial issue in assessing the integrity of engineering applications. This paper aims to better understand the fracture performance of Ti6Al4V components with different constraint levels produced by LPBF. Fracture toughness tests were performed on compact tensile (CT) specimens with varying crack length and specimen thickness. The results show that the fracture toughness decreases with increasing crack length, while the fracture toughness shows a large fluctuation with specimen thickness because of LPBF manufacturing defects. Both in-plane and out-of-plane constraint effects of a crack subjected to mode-I loading are analyzed by three-parameter K-T11-T33 method. A correlation line between fracture toughness and normalized T11 stress is established, which can be used to transform fracture properties of specimens with different constraint levels.
分类号	一类
资助项目	National Natural Science Foundation of China[11932020] ; National Natural Science Foundation of China[12072345] ; National Natural Science Foundation of China[12272377] ; National Science and Technology Major Project[J2019 -VI -0012-0126] ; International Partnership Program for Grand Challenges of Chinese Academy of Sci- ences[025GJHZ2023092GC]
WOS关键词	OF-PLANE CONSTRAINT ; CRACK BORDER FIELD ; TRIAXIALITY PARAMETER ; METALLIC COMPONENTS ; FATIGUE RESISTANCE ; STRESS-FIELDS ; TOUGHNESS ; INPLANE ; FAMILY ; GROWTH
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:001241816300001
资助机构	National Natural Science Foundation of China ; National Science and Technology Major Project ; International Partnership Program for Grand Challenges of Chinese Academy of Sci- ences
其他责任者	Qian, Guian
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/95605]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Xiao YM,Sun JY,Qian GA. Effect of constraint on fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2024,131:11.
APA	肖应梦,孙经雨,&钱桂安.(2024).Effect of constraint on fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion.THEORETICAL AND APPLIED FRACTURE MECHANICS,131,11.
MLA	肖应梦,et al."Effect of constraint on fracture performance of Ti6Al4V alloy fabricated by laser powder bed fusion".THEORETICAL AND APPLIED FRACTURE MECHANICS 131(2024):11.