摘要
采用Gleeble 3800热模拟试验机研究在变形条件为800~1100℃,1~30 s-1下的高碳合金钢75Cr1的热变形行为。结果表明,应变速率越快,温度越低,材料所受的应变抗力越高;采用线性回归法,计算试验钢75Cr1的热变形激活能为Qd=264 k J/mol;根据存储能演化规律,找出了热变形过程中75Cr1钢的临界应变点和XD的表达式。
Hot deformation behaviors of high carbon alloy steel 75Cr1 were investigated on Gleeble-3800 simulator at the temperature range of 800-1100 ℃ and strain rate range of 1-30 s-1. Experimental results show that the deformation resistance increases with the increase of strain rate and decrease of temperature; By using the linear regression analysis, the calculated hot deformation activation energy Qd of the 75Cr1 steel is 264 kJ/mol. Based on the stored energy evolution, the critical strain point of 75Cr1 steel was found and the expressions of dynamic recrystallization fraction XD of 75 Cr1 steel were calculated under the different deformation conditions.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第8期132-137,共6页
Heat Treatment of Metals
关键词
高碳合金钢75Cr1
热变形
激活能
动态再结晶
high carbon alloy steel 75 Cr1
hot deformation
activation energy
dynamic recrystallization
