Remarkable improvement of damping capacity in FeMn-based alloys by a long annealing |
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| Authors: | Wei He Qiang Luo Huabei Peng |
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| Affiliation: | 1. School of Mechanical Engineering, Sichuan University, Chengdu, People’s Republic of China;2. School of Mechanical Engineering, Sichuan University, Chengdu, People’s Republic of China  https://orcid.org/0000-0002-8508-5888 |
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| Abstract: | ABSTRACT Effects of a long annealing up to 10?h were investigated on damping capacity and phase evolutions in FeMn-based alloys. The damping capacity in the Fe17.5Mn alloy rose with the annealing time. A highest damping capacity was obtained in the Fe16.5Mn10.5Cr alloy after 2?h annealing. The highest damping capacity was comparable in Fe17.5Mn and Fe16.5Mn10.5Cr alloys. A positive relationship between the damping capacity and the stacking faults existed in both the Fe17.5Mn and Fe16.5Mn10.5Cr alloys annealed for above 2?h. To reduce the amount of α′-martensites was favourable to the further improvement of damping capacity. The α′-martensites clustered locally in the Fe17.5Mn alloy, but they distributed inside the ?-martensite bands in the Fe16.5Mn10.5Cr alloy. |
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| Keywords: | Damping capacity annealing time FeMn-based alloys α′-martensite stacking fault probability? ?-martensite damping source interfaces mobility of interfaces |
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https://orcid.org/0000-0002-8508-5888