Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Tensile and High Cycle Fatigue Properties of Ion-nitrided and Nitro-carburized SCr430B Steels

이온질화 및 질탄화 처리된 SCr430B 박판강의 인장 및 피로특성

  • 박성혁 (한국기계연구원 부설 재료연구소) ;
  • 이종수 (포항공과대학교 철강대학원)
  • Received : 2012.07.04
  • Accepted : 2012.09.07
  • Published : 2012.10.01
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Abstract

Effects of a nitriding treatment on the tensile and high cycle fatigue properties were investigated by conducting ion-nitriding and gas nitro-caburizing treatments on the spheroidized SCr430B medium-carbon steel and performing tensile and tension-tension high cycle fatigue tests. The nitrided samples showed much lower strength and ductility compared to those in the initial as-spheroidized state and premature fracture occurred at the hardened layers. The micro-voids in the compound layer caused fatigue crack initiation. Thus, the removal of the compound layer with micro-voids remarkably improved the fatigue resistance to even beyond that of the as-spheroidized sample.

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References

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Cited by

  1. Effect of Nitriding on Fatigue Characteristics of Cr-Mo Alloy Steel vol.39, pp.6, 2015, https://doi.org/10.3795/KSME-A.2015.39.6.597