利用Gleeble-1500热力模拟试验机,对低体积分数Mg2B2O5w/6061A1复合材料进行热压缩变形试验,变形温度为300～550℃,变形速率为0.01 ～ 10 s-1.结果表明:流变应力随应变速率的增加而增大,随温度升高而减小；流变应力开始随应变增加而增大,达到一定值后趋于平稳,表现出动态回复的特征.经过推导和计算,确定Mg2B2O5w/6061Al复合材料高温变形时的流变应力行为可采用含Zener-Hollomon参数的双曲正弦函数来描述.
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