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Effect of Low Tempering Temperature on Corrosion Resistance of 420J2 Stainless Steel  

Jung, B.H. (Division of Materials Science & Engineering, Pukyong University)
Kim, H.J. (Division of Materials Science & Engineering, Pukyong University)
Kim, M.G. (Division of Materials Science & Engineering, Pukyong University)
Oh, I.S. (Division of Materials Science & Engineering, Pukyong University)
Kim, D.S. (Youvella Co., Ltd.)
Publication Information
Journal of the Korean Society for Heat Treatment / v.17, no.1, 2004 , pp. 29-35 More about this Journal
Abstract
The effect of low tempering in a temperature range of $150{\sim}400^{\circ}C$ on corrosion resistance in 420J2 stainless steel austenitized at $1000^{\circ}C$ was investigated by the application of salt spray test, electrochemical pitting test in 3.5% NaCl solution and DL-EPR test for intergranular corrosion in 0.5M $H_2SO_4$+0.01M KSCN solution. In salt spray test, good corrosion resistance was obtained in a tempering temperature range of $150{\sim}250^{\circ}C$. Pitting potential was increased to the tempering temperature of $250^{\circ}C$, but decreased with the increase of temperature up to $400^{\circ}C$ And it was thought that the degradation of pitting corrosion resistance showed at the tempering temperature of around $400^{\circ}C$ was due to the precipitation of $Cr_7C_3$ of $M_7C_3$ type. The degree of sensitization showed increasing tendency with the increase of tempering temperature, and also Cr depletion phenomena were observed in the vicinity of grain boundary.
Keywords
Low tempering; 420J2 stainless steel; Corrosion resistance; Salt spray test; Pitting potential; DL-EPR test for intergranular corrosion;
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1 日本鐵鋼協會編 : 鋼의 熱處理, 機電硏究社, (1979) 563-568
2 ASM International Handbook Committee : Stainless Steel, ASM International Materials Park, (1996) 17-18
3 日本熱處理技術協會編 : 特殊鋼の熱處理, 日刊工業, No.4, (1970) 233-235
4 Y. G. Kim et al : J. of the Korean Society for Heat Treatment, 5(1992) 117
5 長谷川正義 : 스테인리스鋼 便覽, 世和, (1992) 45-46
6 中野平, 橫山忠正, 川谷洋司 : 鐵 と 鋼, 62(1979) 1239
7 Y. G. Kim et al : J. of the Korean Society for Heat Treatment, 7(1994) 33
8 J. J Hauser et al : Trans. ASM., 54(1961) 514-525
9 Y. T. Jeon and Y. S. Park : J. Corros Sci. Soc. of Korea, 26(1997) 368-380
10 한국공업 표준협회 : KS 핸드북(철강), KSD 9502 (1987) 192-197
11 Z. Szklarska-Smialowska : Pitting Corrosion of Metals, National Association of Corrosion Engineering (1986) 43
12 P. Novak, S. Stefee and F. Franz : Corrosion, 31 (1975) 344
13 H. P. Kim, S. S. Hwang : J. Corros. Sci. Soc. of Korea, 27(1998) 52-64
14 長谷川正義 : 스테인리스鋼 便覽, 世和, (1992) 36
15 F. B. Pickering et al : International Metals Review, December, (1964) 63-77
16 K. M. Moon : J. Corros. Sci. Soc. of Korea, 18(1989) 3-11
17 M. F. Maday, A. Mignone and M. Vittori : Corros. Sci, 28 (1988) 887
18 M. K. Ahan et al : J. Corros. Sci. Soc. of Korea, 22(1993) 166-175