Hot Deformation Characterization of AISI 316 and AISI 304 Stainless Steels

1Mechanical Engineering Department, Umm Al-Qura University, Saudi Arabia 2Design & Production Engineering Department, Ain Shams University, Egypt 3Production Engineering Department, Alexandria University, Egypt ahmedbackar@gmail.com – Phone: +966592244888 Mechanical Engineering Department, College of Engineering, Umm Al-Qura University, Makkah, Saudi Arabia Abstract-Austenitic stainless steel types AISI304 and AISI316 are material characterised by their high ductility and toughness. In this paper, the deformation characteristics of AISI316 and AISI304 stainless steel are investigated in a temperature range of 850-1050 °C and strain rate range of 0.001-0.1 s using dilatometer hot compression tests. The tests aimed at producing hot processing map and TEM images of the alloys. Based on the deformation results, an empirical model is used to predict the behaviour of both alloys in terms of the stress/strain characteristics and the recrystallization dynamics. The developed model is considered to be a very good tool which can be used to predict the materials characteristics under predefined deformation conditions.