摘要
用Gleeble-1500热模拟机研究了SC100-T6铝合金在高温塑性变形过程中应力的变化规律。实验温度为360～500℃,应变速率为0.006～0.036s-1。结果表明,应变速率和变形温度的变化强烈地影响着该合金流变应力的大小,流变应力随变形温度升高而降低,随应变速率提高而增大;可用Zener-Hollomon参数的双曲正弦形式来描述SC100-T6铝合金高温压缩变形时的流变应力行为。
The stress varying rules of SC100-T6 high silicon aluminum alloy during high temperature plastic deformation were studied by isothermal compression of cylindrical specimens on Gleeble-1500. The experiment temperature is from 360℃ to 500℃, strain rate is from 0.006 s-1 to 0.036 s-1. The results show that the flow stress is effected by the changes of both strain rate and deformation temperature, the flow stress decreases with the increase of temperature, while increases with the increase of strain rate. The flow stress of SC 100-T6 alloy during high temperature deformation can be represented by a Zener-Hollomon parameter in shah form.
出处
《热加工工艺》
CSCD
北大核心
2008年第10期47-49,95,共4页
Hot Working Technology
