Abstract
In the present study, the feasibility of electrically assisted (EA) bake hardening for a complex phase (CP) ultra-high strength steel (UHSS) is experimentally investigated. In EA bake hardening, a specimen is rapidly heated to a target temperature by resistance heating in 0.25 sec and is cooled in air to room temperature without being held at the elevated temperature. Even with the extremely short process time, the EA bake hardening effectively induced hardening effects on the given UHSS, which are comparable to those of conventional bake hardening with holding time of 25 min. The result of the present study suggests that the EA bake hardening may be used as a cost-effective alternative to a conventional bake hardening process by significantly reducing the process time and the required energy.
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Thien, N.T., Hong, ST., Kim, MJ. et al. Electrically assisted bake hardening of complex phase ultra-high strength steels. Int. J. Precis. Eng. Manuf. 17, 225–231 (2016). https://doi.org/10.1007/s12541-016-0029-5
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DOI: https://doi.org/10.1007/s12541-016-0029-5