Impact of single structural voids on fatigue properties of AISI 316L manufactured by laser powder bed fusion
•Defined structural defects were implemented in PBF-LB/M manufactured 316L specimens.•Individual internal defects (edge length ≥ 1,000 µm) lead to a significant reduction in UTS.•Material shows high defect tolerance against small internal defects during cyclic loading.•Applicability of the √area-par...
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| Veröffentlicht in: | International journal of fatigue 2021-07, Vol.148, p.106207, Article 106207 |
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| container_title | International journal of fatigue |
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| creator | Kotzem, Daniel Kleszczynski, Stefan Stern, Felix Elspaß, Arno Tenkamp, Jochen Witt, Gerd Walther, Frank |
| description | •Defined structural defects were implemented in PBF-LB/M manufactured 316L specimens.•Individual internal defects (edge length ≥ 1,000 µm) lead to a significant reduction in UTS.•Material shows high defect tolerance against small internal defects during cyclic loading.•Applicability of the √area-parameter model for defects ≥ 1000 µm was evaluated.
The laser powder bed fusion of metals (PBF-LB/M) process is already exploited in several industrial applications. The process itself allows to introduce artificial defects which can later be characterized by their influence on the resulting mechanical properties. In this study, the influence of isolated single structural defects (0.3 mm ≤ √area ≤ 1.5 mm) on the fatigue properties is discussed and the √area-parameter model is applied. The obtained results show that the investigated material is highly defect tolerant as artificial defects with √area = 0.3 mm are not crack initiating. Specimens with a defect of √area = 1.0–1.5 mm clearly show crack initiation and propagation starting from the defect, and a fatigue strength estimation tends to be more conservative. |
| doi_str_mv | 10.1016/j.ijfatigue.2021.106207 |
| format | Article |
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The laser powder bed fusion of metals (PBF-LB/M) process is already exploited in several industrial applications. The process itself allows to introduce artificial defects which can later be characterized by their influence on the resulting mechanical properties. In this study, the influence of isolated single structural defects (0.3 mm ≤ √area ≤ 1.5 mm) on the fatigue properties is discussed and the √area-parameter model is applied. The obtained results show that the investigated material is highly defect tolerant as artificial defects with √area = 0.3 mm are not crack initiating. Specimens with a defect of √area = 1.0–1.5 mm clearly show crack initiation and propagation starting from the defect, and a fatigue strength estimation tends to be more conservative.</description><identifier>ISSN: 0142-1123</identifier><identifier>EISSN: 1879-3452</identifier><identifier>DOI: 10.1016/j.ijfatigue.2021.106207</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Additive manufacturing ; Computed tomography ; Crack initiation ; Crack propagation ; Defects ; Fatigue behavior ; Fatigue life prediction ; Fatigue strength ; Heat treating ; Industrial applications ; Laser powder bed fusion ; Materials fatigue ; Mechanical properties ; Powder beds</subject><ispartof>International journal of fatigue, 2021-07, Vol.148, p.106207, Article 106207</ispartof><rights>2021 Elsevier Ltd</rights><rights>Copyright Elsevier BV Jul 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c343t-a869b3c8f2c2a54fbcb2ed106770c506fb66044a5a2bd3056ec6e15b8acdebfe3</citedby><cites>FETCH-LOGICAL-c343t-a869b3c8f2c2a54fbcb2ed106770c506fb66044a5a2bd3056ec6e15b8acdebfe3</cites><orcidid>0000-0002-3974-8847 ; 0000-0001-6870-0423</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.2021.106207$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27911,27912,45982</link.rule.ids></links><search><creatorcontrib>Kotzem, Daniel</creatorcontrib><creatorcontrib>Kleszczynski, Stefan</creatorcontrib><creatorcontrib>Stern, Felix</creatorcontrib><creatorcontrib>Elspaß, Arno</creatorcontrib><creatorcontrib>Tenkamp, Jochen</creatorcontrib><creatorcontrib>Witt, Gerd</creatorcontrib><creatorcontrib>Walther, Frank</creatorcontrib><title>Impact of single structural voids on fatigue properties of AISI 316L manufactured by laser powder bed fusion</title><title>International journal of fatigue</title><description>•Defined structural defects were implemented in PBF-LB/M manufactured 316L specimens.•Individual internal defects (edge length ≥ 1,000 µm) lead to a significant reduction in UTS.•Material shows high defect tolerance against small internal defects during cyclic loading.•Applicability of the √area-parameter model for defects ≥ 1000 µm was evaluated.
The laser powder bed fusion of metals (PBF-LB/M) process is already exploited in several industrial applications. The process itself allows to introduce artificial defects which can later be characterized by their influence on the resulting mechanical properties. In this study, the influence of isolated single structural defects (0.3 mm ≤ √area ≤ 1.5 mm) on the fatigue properties is discussed and the √area-parameter model is applied. The obtained results show that the investigated material is highly defect tolerant as artificial defects with √area = 0.3 mm are not crack initiating. Specimens with a defect of √area = 1.0–1.5 mm clearly show crack initiation and propagation starting from the defect, and a fatigue strength estimation tends to be more conservative.</description><subject>Additive manufacturing</subject><subject>Computed tomography</subject><subject>Crack initiation</subject><subject>Crack propagation</subject><subject>Defects</subject><subject>Fatigue behavior</subject><subject>Fatigue life prediction</subject><subject>Fatigue strength</subject><subject>Heat treating</subject><subject>Industrial applications</subject><subject>Laser powder bed fusion</subject><subject>Materials fatigue</subject><subject>Mechanical properties</subject><subject>Powder beds</subject><issn>0142-1123</issn><issn>1879-3452</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFUE1LxDAUDKLguvobDHjumo827R6XxY_Cggf1HJL0ZUnpNjVpV_bfm7Li1dPAMDPvzSB0T8mKEioe25VrrRrdfoIVI4wmVjBSXqAFrcp1xvOCXaIFoTnLKGX8Gt3E2BJC1qQsFqirD4MyI_YWR9fvO8BxDJMZp6A6fPSuidj3-DcfD8EPEEYHcTZs6vcacyp2-KD6yarZBQ3WJ9ypCAEP_rtJoBNnp-h8f4uurOoi3P3iEn0-P31sX7Pd20u93ewyw3M-ZqoSa81NZZlhqsitNppBk2qVJTEFEVYLQfJcFYrphpNCgBFAC10p04C2wJfo4Zyb_v2aII6y9VPo00nJCp6LnHNWJlV5VpngYwxg5RDcQYWTpETO08pW_k0r52nledrk3JydkEocHQQZjYPeQOMCmFE23v2b8QMaYoeD</recordid><startdate>202107</startdate><enddate>202107</enddate><creator>Kotzem, Daniel</creator><creator>Kleszczynski, Stefan</creator><creator>Stern, Felix</creator><creator>Elspaß, Arno</creator><creator>Tenkamp, Jochen</creator><creator>Witt, Gerd</creator><creator>Walther, Frank</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/0000-0002-3974-8847</orcidid><orcidid>https://orcid.org/0000-0001-6870-0423</orcidid></search><sort><creationdate>202107</creationdate><title>Impact of single structural voids on fatigue properties of AISI 316L manufactured by laser powder bed fusion</title><author>Kotzem, Daniel ; Kleszczynski, Stefan ; Stern, Felix ; Elspaß, Arno ; Tenkamp, Jochen ; Witt, Gerd ; Walther, Frank</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-a869b3c8f2c2a54fbcb2ed106770c506fb66044a5a2bd3056ec6e15b8acdebfe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Additive manufacturing</topic><topic>Computed tomography</topic><topic>Crack initiation</topic><topic>Crack propagation</topic><topic>Defects</topic><topic>Fatigue behavior</topic><topic>Fatigue life prediction</topic><topic>Fatigue strength</topic><topic>Heat treating</topic><topic>Industrial applications</topic><topic>Laser powder bed fusion</topic><topic>Materials fatigue</topic><topic>Mechanical properties</topic><topic>Powder beds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kotzem, Daniel</creatorcontrib><creatorcontrib>Kleszczynski, Stefan</creatorcontrib><creatorcontrib>Stern, Felix</creatorcontrib><creatorcontrib>Elspaß, Arno</creatorcontrib><creatorcontrib>Tenkamp, Jochen</creatorcontrib><creatorcontrib>Witt, Gerd</creatorcontrib><creatorcontrib>Walther, Frank</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>Kotzem, Daniel</au><au>Kleszczynski, Stefan</au><au>Stern, Felix</au><au>Elspaß, Arno</au><au>Tenkamp, Jochen</au><au>Witt, Gerd</au><au>Walther, Frank</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Impact of single structural voids on fatigue properties of AISI 316L manufactured by laser powder bed fusion</atitle><jtitle>International journal of fatigue</jtitle><date>2021-07</date><risdate>2021</risdate><volume>148</volume><spage>106207</spage><pages>106207-</pages><artnum>106207</artnum><issn>0142-1123</issn><eissn>1879-3452</eissn><abstract>•Defined structural defects were implemented in PBF-LB/M manufactured 316L specimens.•Individual internal defects (edge length ≥ 1,000 µm) lead to a significant reduction in UTS.•Material shows high defect tolerance against small internal defects during cyclic loading.•Applicability of the √area-parameter model for defects ≥ 1000 µm was evaluated.
The laser powder bed fusion of metals (PBF-LB/M) process is already exploited in several industrial applications. The process itself allows to introduce artificial defects which can later be characterized by their influence on the resulting mechanical properties. In this study, the influence of isolated single structural defects (0.3 mm ≤ √area ≤ 1.5 mm) on the fatigue properties is discussed and the √area-parameter model is applied. The obtained results show that the investigated material is highly defect tolerant as artificial defects with √area = 0.3 mm are not crack initiating. Specimens with a defect of √area = 1.0–1.5 mm clearly show crack initiation and propagation starting from the defect, and a fatigue strength estimation tends to be more conservative.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijfatigue.2021.106207</doi><orcidid>https://orcid.org/0000-0002-3974-8847</orcidid><orcidid>https://orcid.org/0000-0001-6870-0423</orcidid></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Additive manufacturing Computed tomography Crack initiation Crack propagation Defects Fatigue behavior Fatigue life prediction Fatigue strength Heat treating Industrial applications Laser powder bed fusion Materials fatigue Mechanical properties Powder beds |
| title | Impact of single structural voids on fatigue properties of AISI 316L manufactured by laser powder bed fusion |
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