Effect of scan rotation on the microstructure development and mechanical properties of 316L parts produced by laser powder bed fusion

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dc.contributor.authorLeicht, Aen_AU
dc.contributor.authorYu, CHen_AU
dc.contributor.authorLuzin, Ven_AU
dc.contributor.authorKlement, Uen_AU
dc.contributor.authorHryha, EMen_AU
dc.date.accessioned2020-06-15T00:14:18Zen_AU
dc.date.available2020-06-15T00:14:18Zen_AU
dc.date.issued2020-05en_AU
dc.date.statistics2020-06-01en_AU
dc.description.abstractAdditive manufacturing possesses appealing features for producing high-performance components, for a wide range of materials. One of these features is the ability to locally tailor the microstructure and in turn, the mechanical properties. This study investigates how the microstructure of stainless steel 316L parts produced by laser powder bed fusion are affected by alternating the laser scan orientation. The microstructure consists of large elongated grains with a fine cell substructure. This study established the correlation between the orientation of this substructure and the crystallographic orientation. The results show that by producing parts without any rotation a quite unique crystallographic orientation can be achieved. The grain structure primarily consisted of large 〈101〉 oriented grains, that were separated by thin bands of small 〈100〉 oriented grains with respect to the building direction. As rotation was added these bands were eliminated. Samples that were produced without any rotation generated the highest tensile strength (527 ± 5.4 MPa), yield strength (449 ± 2.4 MPa) and ductility (58 ± 1.3%). The lowest mechanical properties were obtained for samples that were produced using a scan rotation of 67° with the tensile strength of 485 ± 4.8 MPa, yield strength of 427 ± 5.4 MPa and ductility of 50 ± 1.3%. This indicates that cell orientation and crystallographic orientation plays an essential role in the tensile properties of 316L parts produced by laser powder bed fusion (L-PBF). © 2020 Elsevier Inc.en_AU
dc.identifier.articlenumber110309en_AU
dc.identifier.citationLeicht, A., Yu, C. H., Luzin, V., Klement, U., & Hryha, E. (2020). Effect of scan rotation on the microstructure development and mechanical properties of 316L parts produced by laser powder bed fusion. Materials Characterization, 163, 110309. doi:10.1016/j.matchar.2020.110309en_AU
dc.identifier.govdoc9691en_AU
dc.identifier.issn1044-5803en_AU
dc.identifier.journaltitleMaterials Characterizationen_AU
dc.identifier.urihttps://doi.org/10.1016/j.matchar.2020.110309en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9649en_AU
dc.identifier.volume163en_AU
dc.language.isoenen_AU
dc.publisherElsevier B.V.en_AU
dc.subjectAdditivesen_AU
dc.subjectManufacturingen_AU
dc.subjectStainless steelsen_AU
dc.subjectMicrostructureen_AU
dc.subjectTextureen_AU
dc.subjectMechanical propertiesen_AU
dc.subjectCrystallographyen_AU
dc.subjectRotationen_AU
dc.titleEffect of scan rotation on the microstructure development and mechanical properties of 316L parts produced by laser powder bed fusionen_AU
dc.typeJournal Articleen_AU
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