Effect of Deformation Temperature on Mechanical Properties of High Manganese Austenitic Stainless Steel

doi:2012.26.3.55

J. Ocean Eng. Technol. > Volume 26(3); 2012 > Article

J. Ocean Eng. Technol. 2012;26(3):55-60.
DOI: https://doi.org/10.5574/KSOE.2012.26.3.055

Kang Chang-Yong,Hur Tae-Young,Kim Young-Hwa,Koo Cha-Jin,Han Hyun-Sung,Lee Sang-Hee

Dept. of Metallurgical Engineering Pukyoung National University,Dept. of Metallurgical Engineering Pukyoung National University,Dept. of Metallurgical Engineering Pukyoung National University,Dept. of Metallurgical Engineering Pukyoung National Univer

고 Mn 오스테나이트계 스테인리스강의 기계적 성질에 미치는 가공온도의 영향

강창룡,허태영,김영화,구차진,한현성,이상희

부경대학교 대학원 금속공학과,부경대학교 대학원 금속공학과,부경대학교 대학원 금속공학과,부경대학교 대학원 금속공학과,한국폴리텍VII대학 동부산캠퍼스 산업설비학과,한국폴리텍VII대학 부산캠퍼스 메카드로닉스과

Keywords: High manganese austenitic stainless steel, Deformation temperature, Deformation induced martensite, Stable of austenite, Volume fraction of martensite

핵심용어: 고 망간 오스테나이트계 스테인리스강, 가공온도, 가공유기 마르텐사이트, 오스테나이트 안정도, 마르텐 사이트의 체적분율

Abstract

This study was carried out to investigate the effect of the deformation temperature in high manganese austenitic stainless steel. ${alpha}$'-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.