In recent years, the use of advanced high strength steels in automotive industry has been increased remark-ably. Among advanced high strength steels, dual phase (DP)steels have gained a great attention owing to a combi-nation of high strength and good formability. However, high strength usually increases the spring-back behavior of the material, which creates problems for the parts during the assembly. Thus, the uniaxial tensile deformation and spring-back behaviors of DP600 advanced high strength steel were investigated in rolling (0°), diagonal (45°), and transverse (90°)directions in the temperature range from room temperature (RT)to 300 ℃. All tests were per-formed at a deformation speed of 25 mm/min. A V-shaped die (60°)was used for the spring-back measurements. The results indicated that the formability and spring-back of the material were decreased with increasing the tempera-tures. The material showed complex behaviors in different directions and at different temperatures.
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