Herein, the hot deformation behavior of 1Cr12Ni2Mo2WVNb martensitic stainless steel is investigated through the high‐temperature thermal compression test. Meanwhile, a strain‐compensated Arrhenius constitutive equation is established. The correlation coefficient R between the predicted value and the experimental value is 0.994, and the average absolute relative error (AARE) (%) value is calculated to be 3.7845%. These results show that the improved constitutive model of 1Cr12Ni2Mo2WVNb steel achieves a higher accuracy in predicting the flow stress value. Moreover, the equation regarding the peak stress (strain), the critical stress (strain), and the Zener–Holomon parameter is constructed, which exhibits good linearity. In addition, the hot processing maps of 1Cr12Ni2Mo2WVNb steel under the strains of 0.3, 0.4, 0.5, and 0.6 are also established, respectively, based on the compression test. According to the processing map and microstructural observation, it is concluded that the optimal processing conditions for 1Cr12Ni2Mo2WVNb steel are determined as follows: a temperature of 1070–1100 °C, a strain rate of 0.8–1 s⁻¹, and a peak power dissipation efficiency of about 0.34.

中文翻译：

---

1Cr12Ni2Mo2WVNb马氏体不锈钢的热变形特性及加工图

本文通过高温热压缩试验研究了1Cr12Ni2Mo2WVNb马氏体不锈钢的热变形行为。同时，建立了应变补偿的Arrhenius本构方程。相关系数R预测值与实验值之比为0.994，计算出的平均绝对相对误差（AARE）（％）值为3.7845％。这些结果表明，改进的1Cr12Ni2Mo2WVNb钢本构模型在预测流变应力值方面具有更高的精度。此外，构建了关于峰值应力（应变），临界应力（应变）和齐纳-所罗门参数的方程，该方程具有良好的线性。此外，基于压缩试验，还分别建立了1Cr12Ni2Mo2WVNb钢在0.3、0.4、0.5和0.6应变下的热加工图。根据工艺图和组织观察，可以得出以下结论：1Cr12Ni2Mo2WVNb钢的最佳工艺条件确定为：温度为1070–1100°C，^-1，并且峰值功率消耗效率约为0.34。