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고 Mn 오스테나이트계 스테인리스강의 기계적 성질에 미치는 가공온도의 영향
강창룡(Chang-Yong Kang),허태영(Tae-Young Hur),김영화(Young-Hwa Kim),구차진(Cha-Jin Koo),한현성(Hyun-Sung Han),이상희(Sang-Hee Lee) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.3
This study was carried out to investigate the effect of the deformation temperature in high manganese austenitic stainless steel. a’-martensite was formed with a specific direction by deformation. The volume fraction of the deformation induced martensite was increased by increasing the degree of deformation and decreasing the deformation temperature. With the increase in the deformation, the hardness and tensile strength were increased, while the elongation was rapidly decreased at the initial stage of the deformation, and then gradually decreased. The hardness and tensile strength were increased and the elongation was decreased with adecrease in the deformation temperature. The hardness and tensile strength were strongly controlled by the volume fraction of martensite, but the elongation was controlled by the transformation behavior of the deformation induced martensite.