(中南大學(xué) 材料科學(xué)與工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 研究預(yù)變形及時(shí)效過(guò)程對(duì)Cu-0.5Te-0.2Zr合金的力學(xué)性能、導(dǎo)電性能及組織結(jié)構(gòu)的影響。結(jié)果表明：Cu-0.5Te-0.2Zr合金具有較強(qiáng)的時(shí)效強(qiáng)化效應(yīng)；經(jīng)70%預(yù)冷變形+(450 ℃，4 h)時(shí)效處理，Cu-0.5Te-0.2Zr合金獲得最佳的綜合性能，此時(shí)其抗拉強(qiáng)度和屈服強(qiáng)度分別達(dá)到405和339 MPa，伸長(zhǎng)率為11%，電導(dǎo)率為95%IACS。合金的力學(xué)與導(dǎo)電性能主要由時(shí)效過(guò)程中過(guò)飽和固溶原子的析出、基體的回復(fù)與再結(jié)晶控制，其中析出相對(duì)合金的力學(xué)性能與導(dǎo)電性能有最重要的影響。
關(guān)鍵字: Cu-Te-Zr合金；Cu-0.5Te-0.2Zr合金；預(yù)變形；時(shí)效；顯微組織；力學(xué)性能；導(dǎo)電性能
（School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The effects of pre-deformation and aging treatment on mechanical and conductive properties and microstructure of alloy were studied. The results show that the Cu-0.5Te-0.2Zr alloy has better aging strengthening effects. The Cu-0.5Te-0.2Zr alloy that was pre-deformed with 70% deformation and aged at 450 ℃ for 4 h has the best comprehensive properties with tensile strength, yield strength, elongation and electrical conductivity of 405 MPa, 339 MPa, 11% and 95%IACS, respectively. Those mechanical and conductive properties are controlled by the precipitation of supersaturated solid solution atoms, recovery of matrix and recrystallization in the aging. Moreover, the precipitation is the most important factor.
Key words: Cu-Te-Zr alloy; Cu-0.5Te-0.2Zr alloy; pre-deformation; aging; microstructure; mechanical property; conductive property
