Correlation of magnetic Barkhausen emission profile with strength of thermally degraded 2.25chromium-1molybdenum steel

    Authors

    J. W. Byeon; S. I. Kwun; S. J. Hong; C. K. Lee; K. M. Kang;Y. Sohn

    Comments

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    Abbreviated Journal Title

    Mater. Trans.

    Keywords

    magnetic Barkhausen emission; thermal degradation; nondestructive; evaluation; 2.25chromium-1molybdenum steel; NONDESTRUCTIVE EVALUATION; 2.25CR-1MO STEEL; CARBON-STEELS; NOISE; MICROSTRUCTURE; DEGRADATION; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    Abstract

    A non-destructive magnetic Barkhausen emission (MBE) technique was applied to assess thermal degradation of 2.25Cr-1Mo steel, exposed to 630 degrees 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.

    Journal Title

    Materials Transactions

    Volume

    46

    Issue/Number

    12

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    3089

    Last Page

    3091

    WOS Identifier

    WOS:000234846500095

    ISSN

    1345-9678

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