Thermoplasticity of Nickel Saving Austenitic Stainless Steels

Tensile tests for nickel saving austenitic stainless steels with different Cu contents were performed at high temperatures by Gleeble-3800 thermo-mechanical simulator,and the microstructure near the tensile fracture and the thermoplasticity were analyzed and studied.The results show that the thermoplasticity of the austenitic stainless steels were fairly good during 1 150-1 250 ℃.With the increase of Cu content,the thermoplasticity of austenitic stainless steels decreased.The content and shape of ferrite had a great impact on the thermoplasticity of the steels.The increase of ferrite content and network ferrite made the thermoplasticity decreased significantly.