Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Influence of Mo addition on the Mechanical Properties of 13Cr Martensitic Stainless Steel

13Cr마르텐사이트계 스테인리스강의 기계적성질에 미치는 Mo첨가의 영향

  • Kim, Ki-Yeob (Dept. of Materials Eng., Pukyong National University) ;
  • Jung, Byong-Ho (Dept. of Metallurgical Eng., Pukyong National University) ;
  • Kim, Mu-Gil (Dept. of Metallurgical Eng., Pukyong National University) ;
  • Park, Chan (Dept. of Materials Eng., Pukyong National University) ;
  • Ahn, Yong-Sik (Dept. of Materials Eng., Pukyong National University)
  • 김기엽 (부경대학교 재료공학과) ;
  • 정병호 (부경대학교 금속공학과) ;
  • 김무길 (부경대학교 금속공학과) ;
  • 박찬 (부경대학교 재료공학과) ;
  • 안용식 (부경대학교 재료공학과)
  • Published : 1998.09.30
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Abstract

13%Cr martensitic stainless steel was microalloyed with 0~1.5%Mo, and the mechanical properties were tested at the various heat treated conditions. Mo addition increased austenitization temperature(Ac1), and had little influence on the hardness and tensile properties at the annealed condition. The higher the austenitizing temperature, the higher the hardness and tensile strength, but Mo addition decreased those properties. The impact energy after austenitization increased with addition of Mo. The decrease of mechanical properties and increase of impact energy of Mo-alloyed steel after austenitization are thought to be caused by formation of ductile ${\delta}$-ferrite phase in the microstructure.

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Acknowledgement

Supported by : 포항제철(주)