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Park, Sung Soo
Metal Alloy Design (MADe) Lab
Research Interests
  • Metals and alloys, materials properties (mechanical/physical/electrochemical/functional), biomedical implants, metals corrosion

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Effect of heat treatment and drawing on high-manganese steel pipe welded by gas tungsten arc

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dc.contributor.author Park, Geon-Woo ko
dc.contributor.author Jo, Haeju ko
dc.contributor.author Park, Minha ko
dc.contributor.author Kim, Byung-Jun ko
dc.contributor.author Lee, Wookjin ko
dc.contributor.author Shin, Sunmi ko
dc.contributor.author Park, Sung Soo ko
dc.contributor.author Ahn, Yong-Sik ko
dc.contributor.author Jeon, Jong Bae ko
dc.date.available 2020-11-19T08:45:09Z -
dc.date.created 2020-11-17 ko
dc.date.issued 2020-10 ko
dc.identifier.citation METALS, v.10, no.10, pp.1 - 10 ko
dc.identifier.issn 2075-4701 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/48773 -
dc.description.abstract This study investigated the effect of post-weld processes including annealing and drawing on the microstructure and mechanical properties of high-Mn steel pipes welded by gas tungsten arc welding. The weld metal showed a solidified microstructure having coarse and elongated grains due to coalescence of columnar dendrite into welding heat direction. After post-annealing, the solidified microstructure changed into equiaxed grains due to recrystallization and grain growth. Mn segregation occurred during welding solidification and caused lower stacking fault energy (SFE) in the Mn-depleted region. Although ε-martensite formation in the as-welded state and during deformation was expected due to decreased SFE of the Mn-depleted zone, all regions showed a fully austenitic phase. The annealing process decreased strength due to grain coarsening but increased ductility. The drawing process increased strength of weld metal through work hardening. All pipes showed decreasing strain rate sensitivity (SRS) with deformation and negative SRS after certain strain levels. It was confirmed that negative SRS is related to less formation of mechanical twinning at a higher strain rate. This work provides fundamental insights into manufacturing a high-Mn steel pipe and manipulating its properties with annealing and drawing processes. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. ko
dc.language 영어 ko
dc.publisher MDPI AG ko
dc.title Effect of heat treatment and drawing on high-manganese steel pipe welded by gas tungsten arc ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85092521831 ko
dc.identifier.wosid 000586229800001 ko
dc.type.rims ART ko
dc.identifier.doi 10.3390/met10101366 ko
dc.identifier.url https://www.mdpi.com/2075-4701/10/10/1366 ko
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