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摘要：
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材料的变形抗力是进行热加工的依据,其精确的模型是有限元数值模拟的基础和关键。介绍了测试变形抗力的常用试验方法,从影响镁合金高温变形抗力的关键因素着手,研究了当前镁合金变形抗力常用数学模型的构建方法及现状,介绍了当前报道的软化因子、人工神经网络等模型,并比较了各种模型的特点。新型镁合金变形抗力模型的合理构建能为高温变形抗力的预测、数值模拟及后续锻造工艺的制订提供依据。
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Material deformation resistance is the basis of hot working whose reasonable model is the key for finite element method numerical simulation.In the paper,the commonly-used method for testing deformation resistances was introduced and the general modeling technology and status were investigated based on the key factors affecting the resistances of magnesium alloys at high temperatures.Other modeling methods,such as softening factor and artificial neural networks(ANNs) were also discussed.Then the characteristics of the methods were compared.Reasonable model of deformation resistances of new magnesium alloys provided the guidance for predicting the deformation resistances at elevated temperatures,numerical simulation and forging process.
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基金项目：
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教育部重点基金资助项目(No.204085)
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作者简介：
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参考文献：
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