Processing Technology and Mechanical Properties of Die-Cast Magnesium Alloy AZ91D  

作　　者：刘艳改 刘文辉 熊守美 柳百成 王罡 MATSUMOTO Yoshihide MURAKAMI Masayuki 

机构地区：[1]Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China [2]Toyo Machinery and Metal Co.,Ltd.,Hyogo 674-0091,Japan

出　　处：《Tsinghua Science and Technology》2004年第5期612-616,共5页清华大学学报（自然科学版（英文版）

基　　金：Supported by the research project of Tsinghua-Toyo R&D Cener of Magnesium and Aluminum Alloys Processing Technology funded by the Toyo Machinery and Metal Co.Ltd.;the Post-Doctoral Foundation of the Education Ministry of China;the National Natural Science Foundation of China(No.50275081);the National High-Tech Research and Development(863)Program of China(No.2001AA33l030-04)

摘　　要：The mechanical properties of magnesium die-casting components can be improved with im- proved die-casting processing technology. An orthogonal experiment with four factors and three levels (Lq, 34) was used to evaluate the effect of various die-casting processing parameters on the quality and me- chanical properties of an AZ91D magnesium alloy cylinder head cover component. The results show that the injection speed and casting and die temperatures all influence the component quality, with the influence of the casting pressure being the smallest. The injection speed and casting pressure are the two most im- portant factors influencing the tensile strength. The best die-casting parameters for the magnesium alloy cyl- inder head cover component were determined to be a casting temperature of 660℃, a die temperature of 200℃, an injection speed of 70 mgs?1, and a casting pressure of 65 MPa. The porosity is one of the most important parameters influencing the casting strength.The mechanical properties of magnesium die-casting components can be improved with im- proved die-casting processing technology. An orthogonal experiment with four factors and three levels (Lq, 34) was used to evaluate the effect of various die-casting processing parameters on the quality and me- chanical properties of an AZ91D magnesium alloy cylinder head cover component. The results show that the injection speed and casting and die temperatures all influence the component quality, with the influence of the casting pressure being the smallest. The injection speed and casting pressure are the two most im- portant factors influencing the tensile strength. The best die-casting parameters for the magnesium alloy cyl- inder head cover component were determined to be a casting temperature of 660℃, a die temperature of 200℃, an injection speed of 70 mgs?1, and a casting pressure of 65 MPa. The porosity is one of the most important parameters influencing the casting strength.

关 键 词：AZ91D die casting MAGNESIUM process parameters mechanical properties 

分 类 号：TG27[金属学及工艺—铸造] TG249.2