摘要
采用热压缩试验对A286合金在950~1150℃,应变速率为0.1~10 s^(-1)条件下的流变应力、组织进行了研究。结果表明,随温度和应变速率的增加,再结晶分数增加。采用双曲正弦函数描述了峰值应力与Zener-hollomon参数的关系,测试范围内,峰值应力条件下的再结晶激活能为464 k J/mol,峰值应力方程为■=1.79×10^(18){sinh(0.0044·σ_p)}exp(-464 000/RT),峰值应力计算值和试验值吻合较好。
The flow stress and microstructure of alloy A286 were investigated by using single-stage hot compression experiments in the temperature range of 950-1150 ℃ and at strain rate of 0. 1-10 s-1. The results show the volume fraction of recrystallization increases with the increase of temperature and stain rate. A hyperbolic sine function is adopted to describe the relationship between peak stress and Zenerhollomon parameter. The activate energy determined is 464 k J / mol for peak stress in the tested range and the constitutive equation for peak stress is ε= 1. 79 × 10^18{ sinh( 0. 0044·σ_p) } exp(- 464 000 /RT). The calculated values of peak stress agree well with the tested values.
作者
廖舒纶
胡显军
麻晗
鲍丙辉
Liao Shulun Hu Xianjun Ma Han Bao Binghui(Institute of Research of Iron and Steel, Shasteel/Jiangsu Province, Zhangjiagang Jiangsu 215625, China)
出处
《金属热处理》
CAS
CSCD
北大核心
2016年第10期11-14,共4页
Heat Treatment of Metals