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Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress
Qian GA(钱桂安)1,2; Jian ZM1,2; Qian YJ3; Pan XN(潘向南)1,2; Ma XF3; Hong YS(洪友士)1,2
Source PublicationINTERNATIONAL JOURNAL OF FATIGUE
2020-09-01
Volume138Pages:9
ISSN0142-1123
Abstract

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.

KeywordSelective laser melting Very-high-cycle fatigue AlSi10Mg Crack initiation Fatigue strength
DOI10.1016/j.ijfatigue.2020.105696
Indexed BySCI ; EI
Language英语
WOS IDWOS:000540657100015
WOS KeywordMECHANICAL-PROPERTIES ; GIGACYCLE FATIGUE ; CRACK INITIATION ; LIFE PREDICTION ; CRITICAL PLANE ; VHCF RESPONSE ; STRENGTH ; MICROSTRUCTURE ; TI-6AL-4V ; ALLOY
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
Funding OrganizationNSFC 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]
Classification一类
Ranking1
ContributorMa, Xianfeng
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/84725
Collection非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R China
Recommended Citation
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.
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