(中南大學 材料科學與工程學院，長沙 410083)
摘 要: 研究預變形及時效過程對Cu-0.5Te-0.2Zr合金的力學性能、導電性能及組織結構的影響。結果表明：Cu-0.5Te-0.2Zr合金具有較強的時效強化效應；經70%預冷變形+(450 ℃，4 h)時效處理，Cu-0.5Te-0.2Zr合金獲得最佳的綜合性能，此時其抗拉強度和屈服強度分別達到405和339 MPa，伸長率為11%，電導率為95%IACS。合金的力學與導電性能主要由時效過程中過飽和固溶原子的析出、基體的回復與再結晶控制，其中析出相對合金的力學性能與導電性能有最重要的影響。
關鍵字: Cu-Te-Zr合金；Cu-0.5Te-0.2Zr合金；預變形；時效；顯微組織；力學性能；導電性能
（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
