Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Sliding Wear Behavior of Fe-Base Norem 02 Hardfacing Alloy in Pressurized Water

Fe계 Norem 02 경면처리 합금의 고압.수중 마모거동

  • 이권영 (한양대학교 공과대학 신소재공학부) ;
  • 오영민 (한양대학교 공과대학 신소재공학부) ;
  • 이민우 (한양대학교 공과대학 신소재공학부) ;
  • 김선진 (한양대학교 공과대학 신소재공학부)
  • Published : 2002.08.01

Abstract

The sliding wear behavior of an iron-base NOREM 02 hardfacing alloy was investigated in the temperature range of $25～250^{\circ}C$ under a contact stress of 103MPa (15ksi). With increasing temperature, the wear loss of Norem 02 in water increased slightly up to $180^{\circ}C$ at which Norem 02 showed the wear loss of 2.1mg. The wear resistance of Norem 02 resulted from the surface hardening due to the strain-induced phase transformation from austenite to $\alpha$'martensite during sliding wear. The wear loss of Norem 02 was smaller in water compared to air at same temperature because the water could be served as a sort of lubricant. The wear mode of NOREM 02 changed abruptly to severe adhesive wear at $190^{\circ}C$ and galling occurred above $200^{\circ}C$. It was caused that the strain- induced phase transformation took place below $180^{\circ}C$ while not above $190^{\circ}C$. Therefore, Norem 02 was considered to be inadequate at high temperature service area.

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