Correlation of Magnetic Barkhausen Emission Profile with Strength of Thermally Degraded 2.25Chromium–1Molybdenum Steel

Jai Won Byeon; Sook In Kwun; Soon-Jik Hong; Chul-Ku Lee; Kae-Myung Kang; Yongho Sohn

doi:10.2320/matertrans.46.3089

Jai Won Byeon, Sook In Kwun, Soon-Jik Hong, Chul-Ku Lee, Kae-Myung Kang, Yongho Sohn

著者情報

キーワード: magnetic Barkhausen emission, thermal degradation, nondestructive evaluation, 2.25chromium–1molybdenum steel

ジャーナルフリー

2005 年 46 巻 12 号 p. 3089-3091

DOI https://doi.org/10.2320/matertrans.46.3089

詳細

抄録

A non-destructive magnetic Barkhausen emission (MBE) technique was applied to assess thermal degradation of 2.25Cr–1Mo steel, exposed to 630°C for up to 4800 h. The peak position and the peak amplitude in MBE profile decreased and increased, respectively, as a linear function of cube root of isothermal degradation time. These changes in MBE profile were related to the carbides coarsening during thermal exposure. An empirical correlation between the ultimate tensile strength (UTS) and the peak position in the MBE profile was also obtained by a linear regression analysis.

責任著者(Corresponding author)

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