| METALS AND METAL MATRIX COMPOSITES |
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| Effect of V Element on the Magnetomechanical Damping of Fe-16Cr-2.5Mo Alloy |
| XU Xiaoqiang1, XU Yonggang1,2,*
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1 Key Laboratory for Advanced Technologies of Materials, The Ministry of Education of China, Southwest Jiao Tong University, Chengdu 610031, China
2 Jiangsu Keda Car Industry Co., LTD, Yangzhou 225800, China |
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Abstract In this paper, four Fe-16Cr-2.5Mo damping alloys with different V contents (0%, 0.05%, 0.1%, and 0.2%) were prepared. The microstructure was observed by an optical microscope, and the damping behavior was measured by an inverted torsion pendulum internal friction apparatus. The saturated magnetostriction coefficient was measured by XRD under the condition of applied saturation magnetic field, and the magnetic properties were measured by a vibration sample magnetometer. We demonstrate that the Fe-16Cr-2.5Mo based alloys' unit cell contracts due to the addition of V element. Meanwhile, the strength and toughness of V-added alloys are improved due to the solid solution strengthening and fine grain strengthening caused by the V addition. In the external magnetic field, the addition of V element results in a negative magnetostriction of the alloys. And as the V concentration increases, the absolute value of the magnetostriction coefficient increases and damping capacity is improved.
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Published: 03 August 2021
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| Fund:National Natural Science Foundation of China (11172248,51701167). |
About author:: Xiaoqiang Xu studying for a master's degree in Southwest Jiaotong University from September 2017. He is focusing on the research and development of the Fe-Cr damping alloy.
Yonggang Xu, professor and doctoral supervisor in the Department of Metal Materials, School of Materials Science and Engineering, Southwest Jiaotong University. He mainly engaged in the research and development of damping materials, focusing on the phase transformation and mechanical behavior of damping alloys, composite damping materials and the performance of dam-ping devices. He has published more than 20 papers in important journals at home and abroad and applied for more than 10 invention patents. |
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2021, Vol. 35 
