【摘要】 用形变热处理工艺的时效时间、时效前和时效后冷变形程度作为3个影响因素并取不同水平,对Cu-1.2Cr-0.2Zr-0.04Mg-0.02RE合金进行了L9(34)正交试验。研究结果表明,影响导电率的主要因素是时效时间,影响抗拉强度的主要因素是时效后冷变形程度;并确认此合金的最佳工艺为:950℃×1.5 h固溶→冷轧80%→470℃×2 h时效→冷轧60%。Cu-1.2Cr-0.2Zr-0.04Mg-0.02RE合金经最佳工艺处理后的导电率、抗拉强度和伸长率分别为76.6%IACS、617.93 MPa和8.1%。更多还原

【Abstract】 The different levels of aging time,the degree of cold deformation before aging and after aging as the three process parameters of thermal mechanical treatment,which affect the synthetic capabilities of Cu-Cr-Zr-Mg-RE alloy,were studied.L9(34)orthogonal test for the alloy was carried out.The results show that the main factor affecting electrical conductivity is aging time and the affecting tensile strength factor is the degree of cold deformation after aging.The optimum process was following:solution at 950 ℃ for 1.5 h,80% cold deformation before aging,aging at 470 ℃ for 2 h and 60% cold deformation after aging.By the treating with the optimum process,the electrical conductivity,tensile strength and elongation of the Cu-Cr-Zr-Mg-RE alloy are 76.6%IACS,617.93 MPa and 8.1% respectively.更多还原