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http://dx.doi.org/10.12656/jksht.2011.24.3.149

A Study on the Stress Relief by Pulse Magnetic Treatment  

Oh, Ju-Suk (Material Science and Engineering, Pusan National Univ.)
Yang, Won-Jon (Korea Institute of Materials Science (KIMS))
Lee, Jong-Hoon (Korea Institute of Materials Science (KIMS))
Park, Yong-Ho (Material Science and Engineering, Pusan National Univ.)
Publication Information
Journal of the Korean Society for Heat Treatment / v.24, no.3, 2011 , pp. 149-155 More about this Journal
Abstract
Residual stress relief by pulse magnetic treatment is attractive because the process is carried out at room temperature and magnetic fields that are easy to produce and control can be used. This study shows that strong pulse magnetic treatment can lead to stress relaxation of structural steels instead of a conventional heat treatment process. And it makes a comparative study about pulse magnetic treatment and tempering by using Larson-Miller equation. When the specimen was subjected to a pulse magnetic treatment process the residual stress in the specimen was reduced by about 13.8%. It could be compared with tempering at $200^{\circ}C$ for 2hours by using thermal effect of Larson-Miller equation. As a result, it is considered that the pulsed magnetic treatment have an effect of the stress relation by tempering at $200^{\circ}C$ for 2 hours.
Keywords
Pulse Magnetic Treatment; Stress Relief; Tempering Parameter;
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