半固态Al-Cu-Mn合金锻件的热处理工艺与组织  

Heat-Treatment Process for Semi-Solid Al-Cu-Mn Alloy Forgings and Microstructure

作　　者：董维国[1] 尹翔[1] 王平[1] 路贵民[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2007年第6期817-820,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50374031);辽宁省航空科学基金资助项目(20054003);中国博士后科学基金资助项目(2005038591)

摘　　要：利用正交试验法,对Al-Cu-Mn合金半固态锻压件进行了固溶时效热处理.通过对硬度指标的分析,获得了热处理的最佳工艺参数.同时分析了时效后的显微组织.结果表明,Al-Cu-Mn合金半固态锻压件在固溶温度540℃、固溶时间13 h、时效温度165℃、时效时间8 h下,其维氏硬度值可达130 MPa以上;且析出相均匀、弥散地分布在基体上.Different solution-ageing processes were carried out by way of orthogonal experiment for the semi-solid Al-Cu-Mn alloy forgings. Then, the resultant hardnesses were analyzed to determine the optimal technological parameters in such a heat-treatment, with the microstructure after ageing discussed. It was revealed that the Vickers hardness number can come up to over 130 MPa if the temperature/time of ,solution hardening and of age hardening are 540 ℃/13 hr and 165 ℃/8 hr, respectively, with the precipitated phases distributed uniformly and dispersedly on the matrix.

关 键 词：铝合金 正交实验 半固态锻压 时效强化 

分 类 号：TG151.2[金属学及工艺—热处理]