摘要
采用圆柱试样在Gleeble-1500热模拟实验机上对原位反应喷射沉积TiC/7075Al复合材料进行高温压缩变形实验,研究其高温热变形行为。变形温度为300、350、400、450℃,应变速率为0.001、0.01、0.1s-1。结果显示,TiC/7075Al复合材料的流变应力随变形温度升高而降低、随应变速率的降低而降低。可用Zener-Hollomon参数的双曲正弦形式描述复合材料高温压缩变形流变应力,其变形激活能为186.786 kJ/mol。
The experiment of high temperature compression deformation for TiC/7075Al composite by in-situ reaction spray-formed was carried on Gleeble-1500 hot simulator by using isothermal compression of cylindrical specimens, and the hot deformation behavior of TiC/7075Al composite was studied. The deformation temperature is 300, 350, 400, 450 ℃, respectively, strain rate is 0.001, 0.01, 0.1s^-1, respectively. The results show that the flow stress of TiC/7075Al composite decreases with deformation temperature increasing and strain rate decreasing. The flow stress of the composite during high temperature deformation can be represented by a Zener-Hollomon parameter in a sine form, and the deformation activation energy is 186.786 kJ/mol.
出处
《热加工工艺》
CSCD
北大核心
2008年第6期8-10,共3页
Hot Working Technology
基金
内蒙古自治区自然科学基金资助项目(200408020705)
