中文摘要：

综合考虑三阶段蠕变速率的影响,克服现有蠕变方程不易求解的缺点,提出一种基于平均蠕变速率的线性蠕变—松弛转换模型;以幂律蠕变模型为基础,确立一套完整的基于蠕变数据的松弛性能预测方法。1Cr10NiMoW2VNbN为例的验证结果表明,该模型转换数据较好地与实际试验结果吻合,且远优于幂律蠕变模型,可推荐用于高温材料的松弛行为预测。

英文摘要：

A linear creep-relaxation conversion model based on average creep rate,which avoids the calculation limitation of existing creep formula,was developed by synthetically considering the effect of three rates of creep process and an integral prediction methodology of stress relaxation performance was established,linking to power creep functions.Validation results of alloy 1Cr10NiMoW2VNbN indicate that the developed conversion model leads to better consistent results with the experimental data which＇s accuracy is far more than power creep functions,and thus is recommended in the relaxation prediction of high temperature materials.