Inconel 751合金热压缩变形条件下的流变应力模型  

Model for flow stress of Inconel 751 alloy under hot compression

作　　者：潘崇超[1] 凌刚[1] 李佃国[2] 

机构地区：[1]中国农业大学工学院,北京100083 [2]钢铁研究总院

出　　处：《塑性工程学报》2005年第2期7-10,共4页Journal of Plasticity Engineering

摘　　要：采用Gleeblc-1500热模拟试验机对Inconel751合金在应变速率为0.005s-1～20.0s-1,变形温度为980℃～1200℃条件下的流变应力进行了研究。结果表明,在试验范围内,Inconel751合金热压缩变形过程中发生明显的动态再结晶;用Zener-Hollomon参数的双曲对数函数能较好的描述Inconel751合金的流变行为;得到了回归的峰值应力表达式和热变形激活能表达式。The flow stress of Inconel 751 alloy was investigated in the temperature range from 980°C to 1200°C and at strain rate range from 0.005 s-1 to 20.0 s-1 on Gletble-1500 test machine. The experimental results show that dynamic recrystallization occur in evidence during hot compression of Inconel 751 alloy in the experiment condition. The flow stress of Inconel 751 alloy can be represented by a Zener-Hollomon parameter in the hyperbolic logarithm type equation. The regressed peak stress and hot deformation activation energy of Inconel 751 are obtained during hot compression is 328.10 kJ/mol.

关 键 词：INCONEL 751合金 热压缩变形 流变应力 热变形激活能 

分 类 号：TG331[金属学及工艺—金属压力加工]