Title

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

Authors

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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