Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress

doi:10.1016/j.ijfatigue.2020.105696

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

	Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress
	Qian GA(钱桂安)1,3; Jian ZM 1,3; Qian YJ 2; Pan XN(潘向南)1,3; Ma XF 2; Hong YS(洪友士)1,3
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2020-09-01
卷号	138 页码:9
关键词	Selective laser melting Very-high-cycle fatigue AlSi10Mg Crack initiation Fatigue strength
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2020.105696
英文摘要	This paper studies the influence of build orientation and mean stress on the very-high-cycle fatigue (VHCF) behavior of AlSi10Mg fabricated by selective laser melting (SLM). Horizontally built specimens demonstrate better mechanical performance than vertically built specimens. Four crack initiation modes are identified for the specimens in high-cycle fatigue (HCF) and VHCF regimes, namely initiation by lack-of-fusion, initiation by internal pore, initiation with no obvious defect and initiation by tearing. Moreover, it turns out that the mean stress accelerates crack initiation, and hence reduces fatigue life. A model is proposed to describe the effect of crack initiation location on fatigue strength.
分类号	一类
WOS关键词	MECHANICAL-PROPERTIES ; GIGACYCLE FATIGUE ; CRACK INITIATION ; LIFE PREDICTION ; CRITICAL PLANE ; VHCF RESPONSE ; STRENGTH ; MICROSTRUCTURE ; TI-6AL-4V ; ALLOY
WOS研究方向	Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000540657100015
资助机构	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[11932020] ; National Natural Science Foundation of China[11872364] ; National Natural Science Foundation of China[11902370] ; CAS Pioneer Hundred Talents Program, Guangdong Major Project of Basic and Applied Basic Research[2019B030302011] ; Guangdong Basic and Applied Basic Research Foundation[2019A050510022] ; Key-Area R&D Program of GuangDong Province[2019B010943001]
其他责任者	Ma, Xianfeng
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/84725]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; 2.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
推荐引用方式 GB/T 7714	Qian GA,Jian ZM,Qian YJ,et al. Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,138:9.
APA	Qian GA,Jian ZM,Qian YJ,Pan XN,Ma XF,&Hong YS.(2020).Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress.INTERNATIONAL JOURNAL OF FATIGUE,138,9.
MLA	Qian GA,et al."Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress".INTERNATIONAL JOURNAL OF FATIGUE 138(2020):9.