Effect of processing parameters and thermal history on microstructure evolution and functional properties in laser powder bed fusion of 316L

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dc.contributor.authorDeshmukh, Kaustubhen
dc.contributor.authorRiensche, Alexen
dc.contributor.authorBevans, Benen
dc.contributor.authorLane, Ryan J.en
dc.contributor.authorSnyder, Kyleen
dc.contributor.authorHalliday, Harold (Scott)en
dc.contributor.authorWilliams, Christopher B.en
dc.contributor.authorMirzaeifar, Rezaen
dc.contributor.authorRao, Prahaladaen
dc.date.accessioned2025-03-21T14:34:24Zen
dc.date.available2025-03-21T14:34:24Zen
dc.date.issued2024-07-03en
dc.description.abstractIn this paper, we explain and quantify the causal effect of processing parameters and part-scale thermal history on the evolution of microstructure and mechanical properties in the laser powder bed fusion additive manufacturing of Stainless Steel 316L components. While previous works have correlated the processing parameters to flaw formation, microstructures evolved, and properties, a missing link is the understanding of the effect of thermal history. Accordingly, tensile test coupons were manufactured under varying processing conditions, and their microstructure-related attributes, e.g., grain morphology, size and texture; porosity; and microhardness were characterized. Additionally, the yield and tensile strengths of the samples were measured using digital image correlation. An experimentally validated computational model was used to predict the thermal history of each sample. The temperature gradients and sub-surface cooling rates ascertained from the model predictions were correlated with the experimentally characterized microstructure and mechanical properties. By elucidating the fundamental process-thermal-structure–property relationship, this work establishes the foundation for future physics-based prediction of microstructure and functional properties in laser powder bed fusion.en
dc.description.sponsorshipKaustubh Deshmukh, Ryan J. Lane, Reza Mirzaeifar (deceased), Christopher B. Williams, and Prahalada Rao acknowledge funding for this research through the Department of the Navy award number N00014-21-1-2781 issued by the Office of Naval Research. Harold (Scott) Halliday thanks the NSF for funding the work carried out at Navajo Technical University through HRD 1840138 (NTU Center for Advanced Manufacturing). Prahalada Rao acknowledges funding from the National Science Foundation (NSF) via Grant numbers CMMI-2309483/1752069, OIA- 1929172, PFI-TT 2322322/2044710, CMMI-1920245, ECCS-2020246, CMMI-1739696, and CMMI-1719388 and the National Institute of Standards and Technology (NIST) via grant 70NANB23H029T for porting his research program.en
dc.format.extent20 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1016/j.matdes.2024.113136en
dc.identifier.urihttps://hdl.handle.net/10919/124907en
dc.identifier.volume244en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectLaser powder bed fusionen
dc.subjectStainless Steel 316Len
dc.subjectMicrostructure evolutionen
dc.subjectCharacterization and tensile testingen
dc.subjectThermal history simulationen
dc.titleEffect of processing parameters and thermal history on microstructure evolution and functional properties in laser powder bed fusion of 316Len
dc.title.serialMaterials & Designen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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