Transactions of Materials and Heat Treatment

Title：Study on numerical simulation of AZ31 magnesium alloy bike crank isothermal

Authors： ZHANG Yi WANG Qi-jun WANG Lei LIU Hua-min

Unit： Ningbo Xunhui Electric Appliance Co. Ltd. Jilin University

KeyWords： AZ31 magnesium alloy bicycle crank isothermal closed-die forging numerical simulation

ClassificationCode：TP391

year,vol(issue):pagenumber：2011,36(6):133-136

Abstract：

Based on rigid and plastic FEM, magnesium alloy bike crank isothermal closed-die forging was simulated , the metal flowing rule in the bike crank forming process was revealed, and the characteristics of velocity field and curve of distance -load was analyzed. The process of the forging could be expressed in four stages of bending deformation, compressing deformation, die filling deformation and finish-forging deformation. Different temperatures and speeds influenced the process of magnesium alloy forging was studied，and magnesium alloy bike crank isothermal closed-die forging was suitable to be done at 3mm·s-1 of punch in 350 ℃ isothermal environment.

Funds：

国家自然科学基金资助项目（50775098）

Reference：

[1]Yo Kojima, Shigeharu Kamado Fundamental Magnesium researches in Japan[J]. Materials Science Forum,2005,488489: 9-16.

[2]Zhang P, Lindemann J. Influence of shot peening on high cycle fatigue properties of the high-strength wrought magnesium alloy AZ80[J] . Scripta Materialia, 2005, 52: 485-490.

[3]Mordike B L, Ebert T. Magnesium: Properties-applications-poten-tial[J]. Materials Science Engineering A, 2001,302:37-45.

[4]Ogawa N, Shiomi M, Osakada K. Forming limit of magnesium alloy at elevated temperatures for precision forging[J] .Mater1 Sci. Forum, 2002, 42: 607614.

[5]杜海威, 刘凯泉, 郭义. DEFORM 软件在加工制造业中的应用[J].一重技术, 2008, 123 (3) :103-105.

[6]张昌明, 张会. 采用DEFORM-3D 对2A12铝合金锻造变形的模拟研究[J] . 锻压技术, 2009, 34 (6) : 140-142.

[7]Satisha G D, Singhb N K, Ohdarb R K. Preform optimization of pad section of front axle beam using DEFORM[J] .Journal of Materials Processing Technology, 2008, 203:102-106.

[8]Xu Yongchao,Zhang Shihong, Liu Huamin. Improved formability and deep drawing of cross-rolled magnesium alloy sheet at elevated temperatures[J]. Materials Science Forum,2005,488489： 461-464.

[9]王忠堂，张士宏,齐广霞,等. AZ31镁合金热变形本构方程[J]. 中国有色金属学报, 2008, 18 (11) : 24-28.

[10]王智文,张治民,王强. AZ31 变形镁合金等温变形力学特性的研究[J]. 机械工程与自动化,2005,(1):41-44.

[11]王其军.AZ31镁合金自行车曲柄等温闭式锻造数值模拟研究[D]. 吉林：吉林大学, 2008.

Service：

【This site has not yet opened Download Service】【Add Favorite】