摘要
采用圆柱试样在Gleeble-1500热模拟压缩机上对熔渗法制备的W-Cu复合材料进行恒应变速率压缩变形试验,变形温度700～1000℃,变形速率10-3～10s-1,研究了其热变形行为。通过实测变形温度、速率与变形抗力的关系,得到各种条件下的真实应力-应变曲线,研究了温度、应变速率对变形抗力及塑性变形影响的机理。结果表明,在相同温度下,变形抗力随应变速度的增加而增加;在相同应变速度率下,温度越低变形抗力越大。
The deformation testing of W-Cu composite were performed on Gleeble1500 hot simulator in the temperature range of 700-1000 ℃ and the strain rate range of 10^-3～10 s^-1, true strain-stress curves were obtained. The relation between strain rate, temperature and compressive stress was investigated. The effect mechanism of temperature and strain rate on strength and plasticity was investigated. The results show that the compressive stress increases with the increase of strain rate at the same temperature;the lower the temperature, the higherthe compressive stress at the same stminrate.
出处
《热加工工艺》
CSCD
北大核心
2008年第8期39-41,47,共4页
Hot Working Technology
