Transactions of Materials and Heat Treatment

Title：Numerical simulation of thixo-extrusion for wrought magnesium alloy

Authors： WANG Jian-jin YAN Hong ZHOU Bing-feng ZHOU Liu-ru (Institute of Advanced Forming &Manufacturing and Die & Mold Nanchang University Nanchang 330031 China)

Unit：

KeyWords： wrought magnesium alloy thixo-extrusion conventional extrusion numerical simulation FEM

ClassificationCode：TG376

year,vol(issue):pagenumber：2008,33(2):153-156

Abstract：

The thixo-extrusion process and the conventional extrusion process of wrought magnesium were analyzed with computer numerical simulation based on finite element method.Some parameters such as loads of mold,stress,strain and temperature in these two forming process were compared.The results indicate that the thixo-extrusion process has some advantages such as small loads,small effective stress and well-proportioned temperatures. The thixo-extrusion and the conventional extrusion experiments were carried out.Experimental results tally with simulation results.

Funds：

国家自然科学基金(50465003,50765005);; 江西省自然科学基金(2007GZC1826);; 江西省教育厅资助项目

Reference：

[1]陈振华.变形镁合金[M].北京:化学工业出版社,2005.
[2]谢水生.半固态金属加工技术及其应用[M].北京:冶金工业出版社,1999.
[3]闫洪,夏巨谌,王高潮等.半固态金属成形的本构关系[J].材料导报,2002,16(11):8-10.
[4]Yan H,Zhou BF.Thixotropic deformation behavior of semi-solid AZ61 magnesiumalloy during compression process[J].Materials Science and Engineering,2006,132(1-2):179-182.
[5]Zhou H.T,Zeng X.Q,Wang Q.D,et al.Aflowstressmodel for AZ61 magnesiumalloy[J].Acta Metallurgica Sini-ca(English Letters).2004,17(2):155-160.
[6]周冰锋,闫洪.试验研究半固态AZ61合金的本构关系[J].中国机械工程,2006,17(17):1854-1857.
[7]闫洪,夏巨谌,周冰锋.半固态金属触变挤压上限分析[J].塑性工程学报,2005,12(4):66-69.
[8]Hua QL,Shi Z K,Li HJ,et al.Si mulation of liquidinfiltra-tion and semi-solid extrusion for composite tubes by quasi-coupling thermal-mechanical finite element method[J].Jour-nal of Materials Science,2003(38):3669-3675.

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