陶琳,程明,张伟红,宋广胜,张士宏

• 1:中国科学院金属研究所

摘要(Abstract)：

通过等温热压缩实验研究Inconel 625合金的高温高速热变形行为,获得了合金在温度为1000～1200℃、应变速率为1～80 s-1的条件下的真应力-应变曲线,并在考虑变形热效应的基础上对真应力-应变曲线进行了修正。对修正后的峰值应力进行线性回归,得到材料的材料常数:Q=442.97 kJ/mol,n=4.49,α=0.0029 MPa-1。通过非线性回归建立了Inconel 625合金在高温高速条件下的本构模型。

关键词(KeyWords)： Inconel 625合金;高温高速;热变形;温度修正;本构模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金和宝山钢铁股份有限公司联合资助项目(50834008)

作者(Author): 陶琳,程明,张伟红,宋广胜,张士宏

DOI: 10.13289/j.issn.1009-6264.2012.09.019

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