万亚昌,朱玉亮,郑文杰,陈明,徐东,奚晓,张开铭,李朝晖

• 1:贵州安大航空锻造有限责任公司
• 2:钢铁研究总院特殊钢研究所
• 3:西北工业大学材料学院
• 4:湖南大学材料科学与工程学院

摘要(Abstract)：

在变形温度为900～1100℃及应变速率为0.001～1 s~(-1)的条件下，采用Gleeble-3800型热模拟实验机对Monel K-500合金进行了等温恒应变速率压缩实验。分析了Monel K-500合金的热变形行为，构建了应变补偿型物理本构方程，该方程综合考量了变形温度对合金杨氏模量及自扩散系数的影响。结果表明：随着应变速率的降低和变形温度的升高，Monel K-500合金的流动应力减小；建立的蠕变指数n为5的应变补偿物理本构方程，其相关系数R为0.985,平均相对误差AARE为21.018%;建立的蠕变指数n为变量的应变补偿物理本构方程，其相关系数R为0.995,平均相对误差AARE为5.808%;说明建立的蠕变指数n为变量的应变补偿物理本构方程可较好地表征Monel K-500合金的流动应力行为。

关键词(KeyWords)： Monel K-500合金;应变补偿物理本构方程;热变形行为;蠕变指数;流动应力

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 万亚昌,朱玉亮,郑文杰,陈明,徐东,奚晓,张开铭,李朝晖

DOI: 10.13289/j.issn.1009-6264.2024-0477

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