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中文摘要：
采用Gleeble-1500D热模拟试验机对Cu-Cr-Zr-Ag合金进行热压缩试验,研究了Cu-Cr-Zr-Ag合金在不同应变速率和变形温度的流变应力行为、微观组织演变和动态再结晶机制,利用光学显微镜（OM）研究了Cu-Cr-Zr-Ag合金的压缩速率、形变温度对合金微观织构的影响.结果表明：在压缩速率为0.001~10 s-1的区间内,Cu-Cr-Zr-Ag合金存在近稳态流变特征,即流变应力随温升及压缩速率的降低而变小.形变温度越高,越能促使再结晶形核,压缩速率越低,越利于动态再结晶充分发生.
英文摘要：
Flow stress behavior,microstructure evolution and mechanisms of dynamic recrystallization of Cu-Cr-Zr-Ag alloy were investigated via compressive tests with Gleeble-1500 D thermal-mechanical simulating tester under different deformation temperatures and strain rates.The OM was used to study the effect of deformation temperature,compression rate on the microstructure of Cu-Cr-Zr-Ag alloy.The results showed Cu-Cr-Zr-Ag alloy had rheological characteristics of nearly steady-state when the compression rate was between0.001-10 s-1,that is to say,flow stress decreases with the increase of temperature and the decrease of compression rate;the higher the deformation temperature is,the more the chances of recrystallization-nucleation are and the lower the compression rate is,which makes dynamic recrystallization more likely to happen.
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