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Magnetostriction varieties and stress relief caused by pulsed magnetic field |
Zhipeng CAI1( ), Xinjie DUAN1, Jian LIN2, Haiyan ZHAO1 |
| 1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; 2. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China |
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Abstract Magnetostriction is investigated to evaluate the stress relief caused by pulsed magnetic field treatment, because this physical property is closely associated with residual stress. Magnetostriction of different stressed samples is measured in this paper. The stress variations caused by pulsed magnetic treatment are also compared. It is found that magnetostriction variations are closely associated with stress changes. Thermodynamic potential is used to find the relationship between them. Based on several assumptions, we find that the product of magnetostriction amplitude and stress magnitude is nearly a constant during magnetic field treatment, which is valuable for stress relief evaluation and optimizing processing parameters. This conclusion is testified by stress measurements, and the calculated values are in accordance with the experiment results.
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| Keywords
magnetostriction
pulsed magnetic field treatment
stress relief
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Corresponding Author(s):
CAI Zhipeng,Email:czpdme@tsinghua.edu.cn; caizhipeng97@mails.tsinghua.edu.cn
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Issue Date: 05 September 2011
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