Simulation for AM80 Magnesium Alloy Sheet Hot Extrusion
摘 要
通过理论计算建立AM80镁合金热挤压极限图, 根据挤压极限图初步制定挤压工艺; 在不同挤压工艺参数条件下, 采用有限元模拟和试验相结合的方法, 着重探讨了AM80镁合金挤压过程中挤压温度和挤压速度对挤压力、出模口温度变化情况的影响, 得出了最佳工艺参数。结果表明: AM80镁合金的最佳挤压工艺参数为挤压温度350 ℃, 挤压速度3 mm·s-1; 有限元模拟能真实反映不同工艺参数对镁合金挤压变形过程的影响, 同时通过挤压试验型材的表面质量对所建立的挤压极限图进行验证, 结果吻合较好。
Abstract
AM80 magnesium alloy hot extrusion limit diagram was constructed by calculations, and the process parameters were chosen according to this limit diagram. Then using a combination of simulation and experimental methods, the effects of extrusion temperature and rate on the variation of extrusion pressure and exit temperature were studied in the process of AM80 magnesium alloy extrusion, and the optimal process parameters were obtained. The results show that the best extrusion process parameters were extrusion temperature of 350 ℃ and extrusion rate of 3 mm·s-1. It was found that finite element simulation could reflect the effects of different magnesium alloy extrusion parameters on the deformation. By verification of extrusion sheet surface quality, the experimental results agreed well with the constructed extrusion limit diagram.
中图分类号 TG379
所属栏目 物理模拟与数值模拟
基金项目 湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(60870005); 湖南省杰出青年基金资助项目(09JJ1007); 教育部长江学者与创新团队发展计划资助项目(531105050037)
收稿日期 2011/8/8
修改稿日期 2012/5/10
网络出版日期
作者单位点击查看
备注董菲菲(1988-), 女, 河南洛阳人, 硕士研究生。
引用该论文: DONG Fei-fei,ZHOU Jia,LIU Zhi-wen,WANG Guan,LI Luo-xing. Simulation for AM80 Magnesium Alloy Sheet Hot Extrusion[J]. Materials for mechancial engineering, 2012, 36(10): 77~80
董菲菲,周佳,刘志文,王冠,李落星. AM80镁合金板材热挤压工艺的数值模拟[J]. 机械工程材料, 2012, 36(10): 77~80
被引情况:
【1】王冠,何芯,李落星,姚再起, "6063铝合金挤压型材尺寸超差分析及模具优化设计",机械工程材料 37, 85-89(2013)
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】陈振华.耐热镁合金[M].北京:化学工业出版社,2007.
【2】张津,章宗和.镁合金及应用[M].北京:化学工业出版社,2004.
【3】吕炎.精密塑性体积成形技术[M].北京:国防工业出版社,2003:166-167.
【4】LAPOVOK R Y, BARNETT M R, DAVIES C H J. Construction of extrusion limit diagram for AZ31 magnesium alloy by FE simulation [J].Journal of Materials Processing Technology,2004,146(3):408-414.
【5】王迎新.Mg-Al合金晶粒细化、热变形行为及加工工艺的研究[D].上海: 上海交通大学,2006.
【6】BARNETT M R, YAO J Y, DAVIES C H J. Extrusion limits for AZ alloys with AI content<3%[C]//Proceedings of the Light Metals Technology Conference 2003. Australia: CAST Center Pty Ltd,2003:333-338.
【7】DAVIES C H J, BARNETT M R. Expanding the extrusion limits of wrought magnesium alloys [J].JOM,2004,56(5):22-24.
【8】梁桂平,白星,李落星.AM80-xSr-yCa镁合金高温压缩变形行为[J].塑性工程学报,2010, 17(1):99-102.
【9】PENG Z, SHEPPARD T. Study of surface cracking during extrusion of aluminum alloy AA 2014 [J].Maney for the Institute of Materials, Minerals and Mining,2004,20(9):1179-1191.
【10】李庆波,周海涛,刘志超,等.AZ80镁合金变形特性及管材挤压数值模拟研究[J].金属铸锻焊技术,2009, 39(5):31-34.
【11】王新.AZ31镁合金管材挤压过程数值模拟及模具优化[D].上海: 上海交通大学,2010.
【2】张津,章宗和.镁合金及应用[M].北京:化学工业出版社,2004.
【3】吕炎.精密塑性体积成形技术[M].北京:国防工业出版社,2003:166-167.
【4】LAPOVOK R Y, BARNETT M R, DAVIES C H J. Construction of extrusion limit diagram for AZ31 magnesium alloy by FE simulation [J].Journal of Materials Processing Technology,2004,146(3):408-414.
【5】王迎新.Mg-Al合金晶粒细化、热变形行为及加工工艺的研究[D].上海: 上海交通大学,2006.
【6】BARNETT M R, YAO J Y, DAVIES C H J. Extrusion limits for AZ alloys with AI content<3%[C]//Proceedings of the Light Metals Technology Conference 2003. Australia: CAST Center Pty Ltd,2003:333-338.
【7】DAVIES C H J, BARNETT M R. Expanding the extrusion limits of wrought magnesium alloys [J].JOM,2004,56(5):22-24.
【8】梁桂平,白星,李落星.AM80-xSr-yCa镁合金高温压缩变形行为[J].塑性工程学报,2010, 17(1):99-102.
【9】PENG Z, SHEPPARD T. Study of surface cracking during extrusion of aluminum alloy AA 2014 [J].Maney for the Institute of Materials, Minerals and Mining,2004,20(9):1179-1191.
【10】李庆波,周海涛,刘志超,等.AZ80镁合金变形特性及管材挤压数值模拟研究[J].金属铸锻焊技术,2009, 39(5):31-34.
【11】王新.AZ31镁合金管材挤压过程数值模拟及模具优化[D].上海: 上海交通大学,2010.
相关信息