在应变速率0.01～10s-1、变形温度950～1 200℃条件下,采用Gleeble-3500型热/力模拟试验机对一种支承辊用高铬钢进行了热压缩变形试验,研究了其热变形行为和再结晶规律,基于动态材料模型绘制热加工图.结果表明:此钢的热变形激活能为481.363kJ·mol-1,热变形方程ε=1.0×1018sinh(0.008 3σ)]5.78 exp[-481 363/(RT)];温度和应变速率分别为1 045～1 170℃,0.01～0.3 s-1及1 165～1 200℃,1～10 s-1的变形条件属于最佳工艺参数范围,此时的变形机制为动态再结晶,能量消耗效率可达29％以上.
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