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http://dx.doi.org/10.4283/JMAG.2012.17.3.206

Nondestructive Evaluation for Remanent Life of 1Cr-0.5Mo Steel by Reversible Permeability

Ryu, Kwon-Sang (Division of Industrial Metrology, KRISS)
Lee, Yun-Hee (Division of Industrial Metrology, KRISS)
Park, Jong-Seo (Division of Industrial Metrology, KRISS)
Baek, Un-Bong (Division of Industrial Metrology, KRISS)

Publication Information

Journal of Magnetics / v.17, no.3, 2012 , pp. 206-209 More about this Journal

Abstract

Peak interval for reversible permeability is presented for nondestructively evaluating the remanent life of 1Cr-0.5Mo steel. The method to measure the peak interval of reversible permeability is based on the value of reversible permeability is the same as the differential value of the hysteresis loop. The measurement principle is based on the first harmonics voltage induced in a sensing coil using a lock-in amplifier tuned to a frequency of the exciting voltage. Results obtained for the peak interval of reversible permeability and Rockwell hardness on the aged samples decrease as aging time and the Larson-Miller parameter increase. We could estimate the remanent life of 1Cr-0.5Mo steel by using the relationship between the peak interval of reversible permeability and the Larson-Miller parameter, nondestructively.

Keywords

remanent life; 1Cr-0.5Mo steel; nondestructive evaluation (NDE); peak interval of reversible permeability (PIRP); Larson-Miller parameter (LMP);

Citations & Related Records

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