| Citation: |
TU Tiangang, YANG Weitao, YANG Qi. Effect of Hot Rolling Deformation on Microstructure and Damping Properties of Fe-18Mn Alloy[J]. Materials and Mechanical Engineering, 2024, 48(10): 65-70. DOI: 10.11973/jxgccl240079
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Anneal Fe-18Mn alloy was hot rolled with different deformations (5%–22%). The phase composition, microstructure and damping properties were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope and dynamic thermomechanical analyzer. The effect of hot rolling deformation on the microstructure and damping properties of the alloy was studied. The results show that the test alloy consisted by ε martensite, α´ martensite and austensite before and after hot rolling. But there were more austensite change to ε martensite after hot rolling and the content of ε martensite increased, the content of austensite decreased. With the increase of deformation, the content of three phase in the test alloy didn´t change obvioushy, but the damping factors decreased. After hot rolling with deformation of 5%, the contribution of ε martensite, austenite and ε martensite /γ austenite interface decreased, which was the main reason for the decrease of damping performance comparing with those before hot rolling. When the rolling deformation increased from 5% to 22%, the contribution of ε martensite intermediate fault decreased, which was one of the reasons for the further decrease of damping performance.
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