Development of Hot-Rolled Sheet Steel with Significant Increase in Tensile Strength Induced by Strain Age Hardening*
نویسندگان
چکیده
A new type of bake-hardenable high strength hotrolled sheet steel was developed, which shows remarkable increase in tensile strength as well as yield strength after strain age hardening without addition of special elements. The new sheet steel possesses excellent crashworthiness and high fatigue strength, and also shows good formability almost equal to that of conventional high strength sheet steels. This unique combination of properties makes it possible to reduce the weight of the car body by using thinner gauge material when the new sheet steel is applied to crash-resistant parts and underbody parts. Shinjiro Kaneko Senior Researcher, Sheet Lab., Technical Res. Labs. Jiro Hiramoto Senior Researcher, Forming Technology Center, Technical Res. Labs. Takashi Ishikawa Staff Manager, Sheet & Strip Sec., Products Service & Development Dept., Chiba Works
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