采用大变形冷拉拔制备了双相纤维复合Cu-12%Ag合金,测定了不同温度退火的合金拉伸曲线.研究了退火温度对合金应力-应变行为的影响.在拉伸载荷作用下,400℃以下退火的合金主要发生弹性应变,500℃退火的合金主要发生塑性应变.退火温度达到300℃时,合金的抗拉强度和弹性模量均有一定程度的下降.退火温度高于300℃时,抗拉强度及弹性模量显著下降.当退火导致纤维界面密度及局部应变下降时,合金的塑性流变能力提高但强度下降.当退火导致界面分布不均匀时,则会同时损害双相组织的强化效应和塑性流变能力.
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