Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress
•0° built specimens have better VHCF performance than 90° built specimens.•Four failure modes identified for crack initiation in HCF and VHCF.•Mean stress accelerates crack initiation and hence reduces fatigue life.•A model proposed well describes effect of crack initiation on fatigue strength. This...
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| Veröffentlicht in: | International journal of fatigue 2020-09, Vol.138, p.105696-9, Article 105696 |
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| container_title | International journal of fatigue |
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| creator | Qian, Guian Jian, Zhimo Qian, Yujia Pan, Xiangnan Ma, Xianfeng Hong, Youshi |
| description | •0° built specimens have better VHCF performance than 90° built specimens.•Four failure modes identified for crack initiation in HCF and VHCF.•Mean stress accelerates crack initiation and hence reduces fatigue life.•A model proposed well describes effect of crack initiation on fatigue strength.
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. |
| doi_str_mv | 10.1016/j.ijfatigue.2020.105696 |
| format | Article |
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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.</description><identifier>ISSN: 0142-1123</identifier><identifier>EISSN: 1879-3452</identifier><identifier>DOI: 10.1016/j.ijfatigue.2020.105696</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>AlSi10Mg ; Crack initiation ; Fatigue failure ; Fatigue life ; Fatigue strength ; Fracture mechanics ; High cycle fatigue ; Laser beam melting ; Materials fatigue ; Mechanical properties ; Orientation effects ; Selective laser melting ; Very-high-cycle fatigue</subject><ispartof>International journal of fatigue, 2020-09, Vol.138, p.105696-9, Article 105696</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright Elsevier BV Sep 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c392t-704d6a79db81ae06b16dbde3ca83dbd291d43352efd241a1d790e84628c8540c3</citedby><cites>FETCH-LOGICAL-c392t-704d6a79db81ae06b16dbde3ca83dbd291d43352efd241a1d790e84628c8540c3</cites><orcidid>0000-0001-5166-1018</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ijfatigue.2020.105696$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Qian, Guian</creatorcontrib><creatorcontrib>Jian, Zhimo</creatorcontrib><creatorcontrib>Qian, Yujia</creatorcontrib><creatorcontrib>Pan, Xiangnan</creatorcontrib><creatorcontrib>Ma, Xianfeng</creatorcontrib><creatorcontrib>Hong, Youshi</creatorcontrib><title>Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress</title><title>International journal of fatigue</title><description>•0° built specimens have better VHCF performance than 90° built specimens.•Four failure modes identified for crack initiation in HCF and VHCF.•Mean stress accelerates crack initiation and hence reduces fatigue life.•A model proposed well describes effect of crack initiation on fatigue strength.
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.</description><subject>AlSi10Mg</subject><subject>Crack initiation</subject><subject>Fatigue failure</subject><subject>Fatigue life</subject><subject>Fatigue strength</subject><subject>Fracture mechanics</subject><subject>High cycle fatigue</subject><subject>Laser beam melting</subject><subject>Materials fatigue</subject><subject>Mechanical properties</subject><subject>Orientation effects</subject><subject>Selective laser melting</subject><subject>Very-high-cycle fatigue</subject><issn>0142-1123</issn><issn>1879-3452</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkElPwzAQhS0EEqXwG7DEOcVbNm5VVRapiAPL1XLsSesoTYqdVMqRf46jVFw5zWjmvTeaD6FbShaU0OS-WtiqVJ3d9rBghI3TOMmTMzSjWZpHXMTsHM0IFSyilPFLdOV9RQjJSRrP0M8XuCHa2e0u0oOuAZ-icAE7dbStw22Jl_W7peR1i_eq6Uulu96BwcWAPdSgO3sEXCsPDu-h7myzfcDrsgyL0Vv0tja4dRaaLkS3DVaNCULVYN858P4aXZSq9nBzqnP0-bj-WD1Hm7enl9VyE2mesy5KiTCJSnNTZFQBSQqamMIA1yrjoWE5NYLzmEFpmKCKmjQnkImEZTqLBdF8ju6m3INrv3vwnaza3jXhpGRC8IzTJE6DKp1U2rXeOyjlwdm9coOkRI68ZSX_eMuRt5x4B-dyckJ44mjBSa_D0xqMdYGFNK39N-MX7n6O4Q</recordid><startdate>202009</startdate><enddate>202009</enddate><creator>Qian, Guian</creator><creator>Jian, Zhimo</creator><creator>Qian, Yujia</creator><creator>Pan, Xiangnan</creator><creator>Ma, Xianfeng</creator><creator>Hong, Youshi</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0001-5166-1018</orcidid></search><sort><creationdate>202009</creationdate><title>Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress</title><author>Qian, Guian ; Jian, Zhimo ; Qian, Yujia ; Pan, Xiangnan ; Ma, Xianfeng ; Hong, Youshi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c392t-704d6a79db81ae06b16dbde3ca83dbd291d43352efd241a1d790e84628c8540c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>AlSi10Mg</topic><topic>Crack initiation</topic><topic>Fatigue failure</topic><topic>Fatigue life</topic><topic>Fatigue strength</topic><topic>Fracture mechanics</topic><topic>High cycle fatigue</topic><topic>Laser beam melting</topic><topic>Materials fatigue</topic><topic>Mechanical properties</topic><topic>Orientation effects</topic><topic>Selective laser melting</topic><topic>Very-high-cycle fatigue</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qian, Guian</creatorcontrib><creatorcontrib>Jian, Zhimo</creatorcontrib><creatorcontrib>Qian, Yujia</creatorcontrib><creatorcontrib>Pan, Xiangnan</creatorcontrib><creatorcontrib>Ma, Xianfeng</creatorcontrib><creatorcontrib>Hong, Youshi</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>International journal of fatigue</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Qian, Guian</au><au>Jian, Zhimo</au><au>Qian, Yujia</au><au>Pan, Xiangnan</au><au>Ma, Xianfeng</au><au>Hong, Youshi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress</atitle><jtitle>International journal of fatigue</jtitle><date>2020-09</date><risdate>2020</risdate><volume>138</volume><spage>105696</spage><epage>9</epage><pages>105696-9</pages><artnum>105696</artnum><issn>0142-1123</issn><eissn>1879-3452</eissn><abstract>•0° built specimens have better VHCF performance than 90° built specimens.•Four failure modes identified for crack initiation in HCF and VHCF.•Mean stress accelerates crack initiation and hence reduces fatigue life.•A model proposed well describes effect of crack initiation on fatigue strength.
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.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijfatigue.2020.105696</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0001-5166-1018</orcidid><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | AlSi10Mg Crack initiation Fatigue failure Fatigue life Fatigue strength Fracture mechanics High cycle fatigue Laser beam melting Materials fatigue Mechanical properties Orientation effects Selective laser melting Very-high-cycle fatigue |
| title | Very-high-cycle fatigue behavior of AlSi10Mg manufactured by selective laser melting: Effect of build orientation and mean stress |
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