The Resistance Model in Ferrite Region of high-strength IF steel
In this paper, Thermal simulation experiments were carried out on Gleeble-3800 Thermal Mechanical Simulator for high-strength IF steel by addition P. The hot deformation behavior of high-strength IF steel was investigated by the change of the stress-strain curve. Results of the paper include the following: 1.The single pass compression test showed the mode of the stress-strain curve is dynamic recovery, which doesn’t change with temperature. The effect of deformation on the dynamic soften behavior in ferrite region is greater than that in austenite region, and deformation resistance decrease greatly in high temperature zone of ferrite region. Deformation resistance increases with increment of strain rate when temperature and reduction are constant. Deformation resistance increases with increment of reduction when temperature and strain rate are constant. 2. On a basis of data detailed in single pass compression test, the model of deformation resistance can be deduced by regressive method ；Deformation activation energy of tested steel was calculated by Z-hollomen parameter.
high-strength IF steel Ferrite region Deformation activation energy the model of deformation resistance.
张红梅 李向科 蒋其武 乔立峰
辽宁科技大学材料科学与工程学院材料系,辽宁,鞍山,114044 鞍山钢铁公司,辽宁,鞍山,114033
国际会议
辽宁
英文
2006-10-21（万方平台首次上网日期，不代表论文的发表时间）