New experimental data on AISI 1045 steel from the NIST pulse-heated Kolsky Bar Laboratory is presented. The material is shown to exhibit a stiffer response to compressive loading when it has been rapidly preheated than it does when it has been heated using a slower preheating method to a testing temperature that is below the eutectoid temperature. Suggestions are made as to how to modify the well-known Johnson-Cook constitutive model of Jaspers and Dautzenberg for this material to achieve improved temperature predictions.
Proceedings Title: Proceedings of the Eighth International Conference on High Speed Machining
Conference Dates: December 8-10, 2010
Conference Location: Metz, -1
Pub Type: Conferences
high-speed machining, thermal modeling, AISI 1045 steel, Kolsky bar