Optimization of AZ80 magnesium alloy squeeze cast process parameters using morphological matrix  

AZ80镁合金挤压铸造工艺参数的形态学矩阵优化(英文)

作　　者：郭志宏[1] 侯华[1] 赵宇宏[1] 屈淑维[2] 

机构地区：[1]中北大学材料科学与工程学院,太原030051 [2]中北大学机械工程与自动化学院,太原030051

出　　处：《Transactions of Nonferrous Metals Society of China》2012年第2期411-418,共8页中国有色金属学报（英文版）

基　　金：Project (50975263) supported by the National Natural Science Foundation of China;Project (2011DFA50520) supported by International Science Technology Cooperation Program of China

摘　　要：The squeeze cast process parameters of AZ80 magnesium alloy were optimized by morphological matrix. Experiments were conducted by varying squeeze pressure, die pre-heat temperature and pressure duration using L9（33） orthogonal array of Taguchi method. In Taguchi method, a 3-level orthogonal array was used to determine the signal/noise ratio. Analysis of variance was used to determine the most significant process parameters affecting the mechanical properties. Mechanical properties such as ultimate tensile strength, elongation and hardness of the components were ascertained using multi variable linear regression analysis. Optimal squeeze cast process parameters were obtained.运用形态学矩阵对AZ80镁合金挤压铸造工艺参数进行优化。采用 L9(33)田口方法中的正交列对不同挤压压力、模具预热温度和压力持续时间进行组合。采用一个3水平正交阵列确定信噪比,通过方差分析确定影响力学性能最重要的工艺参数,并利用多变量线性回归分析确定拉伸强度、伸长率和硬度,获得了最佳的挤压铸造工艺参数。

关 键 词：AZ80 magnesium alloy squeeze cast process parameters morphological matrix OPTIMIZATION 

分 类 号：TG292[金属学及工艺—铸造]