Hot Deformation Equation and Processing Map of Cu-Bearing 317L Austenitic Antibacterial Stainless Steel
LU Zhi-jiang1,2，YANG Chun-guang2，WANG Shuai2,3，FAN Xin-min1，YANG Ke2
1. School of Materials and Science and Engineering， Nanjing University of Science and Technology，Nanjing 210094， Jiangsu， China 2.Institute of Metal Research， Chinese Academy of Sciences，Shenyang 110016， Liaoning， China 3. School of Materials and Metallurgy， University of Science and Technology Liaoning， Anshan 114051， Liaoning， China
Abstract：The hot deformation behavior of a Cu-bearing 317L austenitic antibacterial stainless steel was studied by a Gleeble 3800 simulator in the temperature range of 950~1150℃ under strain rates of 0.01~10s-1. The hot deformation equation of the steel was determined and the processing map based on the dynamic material model (DMM) was also established. The results show that the activation energy of 317L-Cu austenitic stainless steel for hot deformation is 483kJ/mol. Processing maps of different true strains are similar except the location of un-safe regions had slight change. The optimum processing window for hot deformation of 317L-Cu stainless steel is identified as 960~1030℃ and 0.01~0.045s-1 with higher energy dissipation efficiency when dynamic recrystallization easily happened.
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2014, Vol. 49 
