杜振航,张梦醒,刘涛,褚韦涵,王民乐,刘雨,王长军

• 1:钢铁研究总院

摘要(Abstract)：

在变形温度为900～1150℃、应变速率为0.01～10 s~(-1)及真应变为0.7的条件下，采用Gleeble-3800热模拟实验机对CrCoNiMoN低温中熵合金进行热压缩实验，基于Arrhenius模型构建合金的本构方程并绘制热加工图。结果表明：合金的流变应力与应变速率呈正相关，与变形温度呈负相关；合金的热加工安全区为1020～1120℃/0.01～0.15 s~(-1),最佳热加工工艺参数为：1050～1080℃/0.01～0.05 s~(-1);在900℃/0.1～10 s~(-1)及900～1000℃/0.01 s~(-1)的变形条件下，合金表现出明显的动态再结晶特征，在1050～1150℃/0.01 s~(-1)变形条件下表现为动态回复型特征；所建立的Arrhenius本构方程具有较高预测精度，相关系数S~2=0.97753。

关键词(KeyWords)： 中熵合金;热压缩实验;本构模型;热加工图

Abstract:

Keywords:

基金项目(Foundation): 钢铁研究总院有限公司自主投入基金项目(事21T62450ZD)

作者(Author): 杜振航,张梦醒,刘涛,褚韦涵,王民乐,刘雨,王长军

DOI: 10.13289/j.issn.1009-6264.2025-0022

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