摘要
通过在Gleeble-1500动态热模拟机上进行高温等温压缩试验,研究了BFe30-1-1合金在高温塑性变形过程中的流变应力行为。试验温度为800～950℃,应变速率为0.1～20s-1。研究结果表明:BFe30-1-1合金的流变应力随变形温度的增加而减小,随应变速率的增大而增大;应变速率越大,流变应力下降越明显;获得了采用Zener-Hollomon参数来描述的BFe30-1-1合金高温变形的流变应力方程,计算获得该合金变形激活能Q为177.62kJ/mol。
The flow stress behaviors of BFe30-1-1 copper alloy during plastic deformation at elevated temperature were studied by the isothermal compression test at Gleeble-1500 simulator. The compression test was performed in the temperature range from 800 ℃ to 950℃ and in the sWain rate range from 0.1s^-1 to 20 s^-1.The experimental results show that the flow stress of BFe30-1-1 alloy decreases with the increase of deformation temperature and enhances with the increase of the sWain rate. The flow stress equation of BFe30-1-1 alloy during high temperature deformation is obtained by Zener-Hollomon parameter, and the hot deforming activation energy Q of this alloy is calculated to be 177.62k J/tool.
出处
《热加工工艺》
CSCD
北大核心
2007年第13期9-12,共4页
Hot Working Technology
基金
江苏省科技成果转化项目资助(苏科计DA2006034)
