Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of γ on the Uniform Corrosion of 202 Stainless Steel with Two Phases of γ and α

γ와 α' 2상 조직을 갖는 202 스테인리스강의 균일부식에 미치는 γ의 영향

  • Kim, Y.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Heo, S.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Kim, S.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Lee, S.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Kang, C.Y. (Dept. of Metallurgical Engineering, Pukyong National University)
  • 김영화 (부경대학교 금속공학과) ;
  • 허성화 (부경대학교 금속공학과) ;
  • 김성희 (부경대학교 금속공학과) ;
  • 이상환 (부경대학교 금속공학과) ;
  • 강창룡 (부경대학교 금속공학과)
  • Received : 2015.06.11
  • Accepted : 2015.06.29
  • Published : 2015.07.31
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Abstract

Effects of austenite on the uniform corrosion in the solution of $1\;N\;H_2SO_4$ were investigated through the electrochemical polarization test. Two phases structures of martensite and austenite were obtained by annealing treatment at the range of $500^{\circ}C{\sim}700^{\circ}C$ for 10min. in 70% cold-rolled 202 stainless steel. Volume fraction of reversed austenite increased rapidly with an increase of annealing temperature. Uniform Corrosion was occur mainly on martensite phase in 202 austenitic stainless steel with two phase of austenite and martensite. Corrosion current density increased with an increase of volume fraction of austenite, therefore uniform corrosion was affected by volume fraction of austenite

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References

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