Effect of solution heat treatment temperature on microstructure and properties of Fe-Mn-Mo damping steel
LI Jiangwen1,2, SUN Meihui1, LI Dahang3, GUO Chengyu1, ZHANG Chi1, LIU Wenyue1
1. Ansteel Beijing Research Institute Co., Ltd., Beijing 102299, China; 2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China; 3. Iron and Steel Research Institute, Ansteel Group, Anshan 114000, Liaoning, China
Abstract：In order to investigate the effect of solution heat treatment temperature on the microstructure and properties of Fe-Mn-Mo damping steel, Fe-Mn-Mo damping steel plate with thickness of 15 mm was prepared by vacuum induction melting and two-stage rolling, and the effects of different solution heat treatment temperatures on microstructure and properties were systematically studied by OM, SEM and EBSD characterization methods for Fe-Mn-Mo damping steel. The results show that with the increase of solution temperature, the percentage of ε-martensite increases in Fe-Mn-Mo damping steel, the percentage of α′-martensite decreases, the yield strength and tensile strength gradually decrease, and the plasticity and toughness gradually increase. The high ε/ε martensite interface density is conducive to obtaining high damping performance. After solution heat treatment at 800 ℃, the ε martensite laths in the microstructure are mostly crossed, and the damping performance is higher under low strain amplitude, while after solution heat treatment at 1 000 ℃, the ε martensite laths in the microstructure are mostly parallel, and the damping performance is higher under high strain amplitude. These results can provide reference for microstructure and properties control of Fe-Mn-Mo damping steel.
李江文, 孙美慧, 李大航, 郭呈宇, 张弛, 刘文月. 固溶热处理温度对Fe-Mn-Mo阻尼钢组织和性能的影响[J]. 中国冶金, 2023, 33(7): 59-64.
LI Jiangwen, SUN Meihui, LI Dahang, GUO Chengyu, ZHANG Chi, LIU Wenyue. Effect of solution heat treatment temperature on microstructure and properties of Fe-Mn-Mo damping steel[J]. China Metallurgy, 2023, 33(7): 59-64.
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