연구논문집

Korea Institute of Machinery & Materials (한국기계연구원)
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Study on the Microstructure and Mechanical Properties of 17-4PH Stainless Steel Depending on Heat Treatment and Exposure Time

열처리 및 노출시간에 따른 17-4PH 스테인레스강의 미세조직 및 기계적 특성에 관한 연구

  • 유위도 (한국기계연구원 표면연구부 재료특성평가그룹) ;
  • 이종훈 (한국기계연구원 표면연구부) ;
  • 임영목 (한국기계연구원 표면연구부 재료특성평가그룹) ;
  • 윤국태 (한국기계연구원 표면연구부 재료특성평가그룹)
  • Published : 2002.12.20
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Abstract

A martensitic precipitation hardening stainless steel, 17-4PH has been widely used in the aircraft, chemical and nuclear industries for long time, owing to the excellent mechanical properties with corrosion resistance that can be achieved by simple heat treatment. The microstructure and mechanical properties of the 17-4PH stainless steel cast parts for aircraft, such as impeller, are largely affected by heat treatment condition. But the database of heat treatment has not been clearly established in the domestic investment casting industries because the domestic aerospace, industry lags behind the advanced countries. In this study, the microstructural evolution and mechanical properties of cast 17-4PH stainless steel depending on the heat treatment conditions and aging at $400^{\circ}C$ were investigated.

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