Remarkable Improvement of Damping Capacity in High Strength Fe-Mn Alloy by Changing Defects Configurations
The influences of ageing and tensile deformation at room temperature and their different combinations on damping capacity in a quenched Fe-17Mn alloy had been studied.The results showed that both a short-time ageing at 423 K and moderate deformation could remarkably improve the damping capacity,especially at low strain.The damping capacity significantly deteriorated when the ageing time was above 40 min.The combination of ageing and then deformation improved the damping capacity more remarkably than only deformation or ageing did.The drop in the amount of in-quenched vacancies after ageing and the destroyed configuration of extended dislocations after deformation were responsible for the improvement of damping capacity.The segregation of the solute atoms to stacking faults was the reason for the deterioration of damping capacity after ageing for long time.
damping Fe-Mn alloy vacancy segregation of atoms ageing deformation
QIAN Bingnan WU Bingjie WEN Yuhua
College of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065,Sichuan, China
国际会议
成都
英文
127-130
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）