Influences of manganese on the hot deformation of austenitic Fe-Mn-Si-Al alloys
Influences of Mn on hot deformation behavior of austenitic Fe-Mn-Si-Al alloys were investigated by isothermal compression tests on a Gleeble-3500 thermo-mechanical simulator at temperature range from 900 to 1100 ℃ and strain rate range from 0.01 to 1s -1. The results show that the peak stress of Fe-Mn-Si-Al alloy during hot deformation increases with increasing Mn content. The activation energies for hot deformation are determined as 361.17kJ/mol and 411.17kJ/mol for Fe-20Mn-3Si-3Al alloy and Fe-25Mn-3Si-3Al alloy, respectively. Furthermore, the softening mechanism of Fe-Mn-Si-Al alloy during hot deformation changes with the variation of Mn content. The dynamic recovery is the main softening mechanism of Fe-20Mn-3Si-3Al (20Mn) alloy. Dynamic recrystallization of single peak occurs in Fe-25Mn-3Si-3Al (25Mn) alloy within the investigated ranges of strain rate and temperature. The influence of Mn content on the constitutive equation of both the alloys is also determined.
Li Dejun Feng Yaorong Shangguan Fengshou Zhao Wenzhen Liu Qian Wang Ke
School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China CNPC Tubu CNPC Tubular Goods Research Institute, Xi’an 710065, China School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China Research institute of Yanchang petroleum (Group) Co.Ltd
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）