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Effect of Austenite on the Pitting Corrosion of 202 Stainless Steel with Two Phases of Austenite and Martensite
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 Title & Authors
Effect of Austenite on the Pitting Corrosion of 202 Stainless Steel with Two Phases of Austenite and Martensite
Kim, Jong-Sig; Kim, Young-Hwa; Kim, Hee-Won; Koo, Jeong-Yeup; Sung, Ji-Hyun; Kang, Chang-Yong;
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 Abstract
Effects of austenite on the pitting corrosion in 202 stainless steel with two phase of austenite and martensite were investigated through the electrochemical polarization test. Two phases structures of martensite and austenite were obtained by reversed annealing treatment at the range of for 10min. in 70% cold-rolled 202 stainless steel. Volume fraction of reversed austenite has increased rapidly with an increase of annealing temperature. Pitting corrosion has arisen mainly on martensite phase in 202 stainless steel with two phases of austenite and martensite. Pitting current density has decreased with an increase of volume fraction of austenite. Consequently, pitting corrosion at martensite has occurred largely with an increase of volume fraction of austenite. Pitting corrosion was affected by volume fraction of austenite.
 Keywords
202 Stainless steel;Reversed austenite;Two phases;Pitting corrosion;Annealing treatment;
 Language
Korean
 Cited by
 References
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