王梦寒,李鑫,刘瞬,唐国军,张海成,李松林

• 1:重庆大学材料科学与工程学院
• 2:中国第二重型机械集团德阳万航模锻有限责任公司

摘要(Abstract)：

为提高GH4706合金热加工数值模拟精度，在变形温度为900～1150℃和应变速率为0.01～5 s~(-1)的条件下，采用等温压缩实验研究了铸态GH4706合金的热变形行为，构建了其应变补偿Arrhenius模型、修正Zerilli-Armstrong(Z-A)模型和反向传播人工神经网络(BP-ANN)模型。结果表明：BP-ANN模型的预测精度最优，其相关系数(r~2=0.99982)显著高于应变补偿Arrhenius模型(r~2=0.97252)和修正Z-A模型(r~2=0.96233);基于动态材料模型理论，开发Python程序自动生成热加工图，确定铸态GH4706合金最佳热加工区间为：变形温度为1050～1120℃、应变速率为0.1～1 s~(-1)。

关键词(KeyWords)： GH4706合金;应变补偿Arrhenius模型;修正Zerilli-Armstrong模型;BP人工神经网络模型;热加工图

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2022YFB3705102)

作者(Author): 王梦寒,李鑫,刘瞬,唐国军,张海成,李松林

DOI: 10.13289/j.issn.1009-6264.2025-0093

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