Microstructure Characterization of Hot Deformed Fe-32%Ni Alloy
Hot deformation behavior and microstructure evolution of Fe-32%Ni alloy were investigated when compressed at the temperature of 1000℃ and a strain rate of 2×10-3s-1.The microstructures were analyzed using optical microscope (OM),electron back scatter diffraction (EBSD) and transmission electron microscope (TEM).The results show that the generation and development of dynamic recrystallization (DRX) can obviously refine the grains of Fe-32Ni% alloy and the DRX reached dynamic equilibrium when the strain was high.According to the TEM observations,the DRX microstructure can be categorized into three kinds:grains with low dislocation density,which are DRX nucleations; grains with low dislocation density around the grain boundary and high dislocation density in its interior which means that grains with dislocation density gradient and which are DRX grains in growth; grains with high dislocation density,which are fully work-hardened DRX grains.
Hot deformation Fe-32 Ni alloy Dynamic recrystallization Microstructure evolution
Baojun Han
School of Chemistry and Life Science, GanNan Normal University, Ganzhou 341000, P.R.China
国际会议
重庆
英文
154-158
2011-06-23（万方平台首次上网日期，不代表论文的发表时间）