The influence of temperatures and strain rates on the mechanical behavior of dual phase steel in different conditions
Journal article, 2015

This study deals with the mechanical behavior of DP steel. A commercial dual phase steel (DP 800) was strained to 3.5% followed by annealing at 180 degrees C for 30 min to simulate the pressing of the plates and the paint bake cycle involved in the manufacturing process of automobile body structures. The effect of temperarure and strain rate on the machanical behavior of this material was investigated by uniaxial tensile tests, covering applicable temperatures (-60 degree C to +100 degree C) and strain rates (1x10exp-4 s-1 to 1x10exp+2 s-1) experienced in automotive crash situations. Yield and ultimate tensile strength, ductility, temperature effects and strain rate sensitivity as well as strain rate hardening rate have been determined and discussed.

Dual phase steel

Strain rate sensitivity

Tensile properties


Strain hardening


Yu Cao

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Johan Ahlström

Chalmers, Materials and Manufacturing Technology, Materials Technology

Birger Karlsson

Chalmers, Materials and Manufacturing Technology, Materials Technology

Journal of Materials Research and Technology

22387854 (ISSN)

Vol. 4 1 68-74

Driving Forces

Sustainable development

Subject Categories

Materials Engineering

Areas of Advance


Materials Science


Basic sciences



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