铝合金大铸锭半连铸过程的热应力数值模拟
Numerical Simulation of Thermal Stress of Large Aluminum Ingot in Semi-continuous Casting Process
摘 要
利用大型有限元软件MSC.MARC建立了直径为550 mm的7050铝合金大铸锭的半连续铸造热-力耦合有限元模型,考虑了凝固时结晶潜热的影响,给出了半连铸过程复杂的边界条件,分别对不同铸造速度和铸造温度下的温度场、应力场进行了模拟分析.结果表明:半连续铸造过程中,铝圆锭外层受压应力、心部受拉应力;铸造速度对应力影响较大;提高铸造速度与铸造温度使铝锭产生裂纹的倾向性增大.
半连续铸造
圆锭
数值模拟
7050 aluminum alloy
semi-continuous casting
round ingot
numerical simulation
Abstract
The large-scale finite element software MSC.MARC was used to build the coupled thermal-stress FE model of the semi-continuous casting process of 7050 aluminum ingot with the diameter of 550 mm.This model also took account of the latent heat in solidification process and defined the complicated boundary conditions in the semi-continuous casting process.The temperature field and stress field were simulated at different casting speeds and casting temperatures respectively.The results show that in the semi-continuons casting process,compression stresses exist in the outer layer and tensile strees exist in the center of the ingot.Casting speed has great effects on the stress and increase in casting speed and casting temperature result in the increase of cracking tendency.
中图分类号 TG21
所属栏目 物理模拟与数值模拟
基金项目 国家“973”计划资助项目(2005CB23707)
收稿日期 2007/8/17
修改稿日期 2007/10/25
网络出版日期
作者单位点击查看
备注胡仕成(1968-),男,湖南桃江人,副教授,博士.
引用该论文: HU Shi-cheng,MA Wei-ce. Numerical Simulation of Thermal Stress of Large Aluminum Ingot in Semi-continuous Casting Process[J]. Materials for mechancial engineering, 2008, 32(7): 82～86
胡仕成,马维策. 铝合金大铸锭半连铸过程的热应力数值模拟[J]. 机械工程材料, 2008, 32(7): 82～86
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参考文献
【1】王洪斌,黄进峰,杨滨,等.Al-Zn-Mg-Cu系超高强度铝合金的研究现状与发展[J].材料导报,2003,17(9):1-4.
【2】曾渝,尹志民,潘青林,等.超高强铝合金的研究现状及发展趋势[J].中南工业大学学报,2002,33(6):592-596.
【3】WANG Qiu-cheng,KE Ying-lin,XIAO Hong-yan,et al.Evaluation of residual stress relief of aluminum alloy 7050 by using crack compliance method[J].Trans.Nonferrous Met-Soc.China,2003,13(5):1190-1193.
【4】Paramatmuni Rohit K,Chang Keh-Minn,Kang Bruce S,et al.Evaluation of cracking resistance of DC casting high strength aluminum ingots[J].Materials Science and Engineering A,2004,379:293-301.
【5】尹合璧.圆坯连铸结晶器内热-力学行为的分析[D].大连:大连理工大学,2005.
【6】段玉波,唐剑,刁文武,等.化学成分对7050合金扁锭成型性能的影响[J].重庆大学学报,2004,27(4):100-102.
【7】Miha Zalo nik,Boidar arler.Modeling of macrosegregation in direct-chill casting of aluminum alloys:Estimating the influence of casting parameters[J].Materials Science and Engineering A,2005,413/414:85-91.
【8】Barral P,Quintela P.A numerical algorithm for prediction of thermo-mechanical deformation during the casting of aluminum alloy ingots[J].Finite Elements in Analysis and Design,2000,34:125-143.
【9】Colley L J,Wells M A,Maijer D M.Tensile properties of as-cast aluminum alloy AA5182 close to the solidus temperature[J].Materials Science and Engineering A,2004,386:140-148.
【10】Van Haaften W M,Kool W H,Katgerman L.Tensile behavior of semi-solid industrial aluminum alloys AA310-4 and AA5182[J].Materials Science and Engineering A,2002,336:1-6.
【11】Hiromi Nagaumi,Takateru Umeda.Prediction of internal cracking in a direct-chill cast,high strength,Al-Mg-Si alloy[J].Journal of Light Metals,2002(2):161-167.
【12】马兆敏.铸造凝固过程三维温度场及应力场有限元技术研究[D].南宁:广西大学,2002.
【13】程军,程眉,党惊知,等.铝合金铸件凝固过程热应力数值模拟[J].特种铸造及有色合金,1995(5):1-4.
【14】邢书明,李亚敏,胡汉起.半固态连铸过程拉漏(断)机理研究[J].特种铸造及有色合金,2000(1):16-19.
【15】尤江.铝合金铸件凝固过程的有限元数值模拟研究[D].沈阳:沈阳工业学院,1999.
【16】王祝堂,天荣璋.铝合金及其加工手册[M].长沙:中南工业大学出版社,2000.
【2】曾渝,尹志民,潘青林,等.超高强铝合金的研究现状及发展趋势[J].中南工业大学学报,2002,33(6):592-596.
【3】WANG Qiu-cheng,KE Ying-lin,XIAO Hong-yan,et al.Evaluation of residual stress relief of aluminum alloy 7050 by using crack compliance method[J].Trans.Nonferrous Met-Soc.China,2003,13(5):1190-1193.
【4】Paramatmuni Rohit K,Chang Keh-Minn,Kang Bruce S,et al.Evaluation of cracking resistance of DC casting high strength aluminum ingots[J].Materials Science and Engineering A,2004,379:293-301.
【5】尹合璧.圆坯连铸结晶器内热-力学行为的分析[D].大连:大连理工大学,2005.
【6】段玉波,唐剑,刁文武,等.化学成分对7050合金扁锭成型性能的影响[J].重庆大学学报,2004,27(4):100-102.
【7】Miha Zalo nik,Boidar arler.Modeling of macrosegregation in direct-chill casting of aluminum alloys:Estimating the influence of casting parameters[J].Materials Science and Engineering A,2005,413/414:85-91.
【8】Barral P,Quintela P.A numerical algorithm for prediction of thermo-mechanical deformation during the casting of aluminum alloy ingots[J].Finite Elements in Analysis and Design,2000,34:125-143.
【9】Colley L J,Wells M A,Maijer D M.Tensile properties of as-cast aluminum alloy AA5182 close to the solidus temperature[J].Materials Science and Engineering A,2004,386:140-148.
【10】Van Haaften W M,Kool W H,Katgerman L.Tensile behavior of semi-solid industrial aluminum alloys AA310-4 and AA5182[J].Materials Science and Engineering A,2002,336:1-6.
【11】Hiromi Nagaumi,Takateru Umeda.Prediction of internal cracking in a direct-chill cast,high strength,Al-Mg-Si alloy[J].Journal of Light Metals,2002(2):161-167.
【12】马兆敏.铸造凝固过程三维温度场及应力场有限元技术研究[D].南宁:广西大学,2002.
【13】程军,程眉,党惊知,等.铝合金铸件凝固过程热应力数值模拟[J].特种铸造及有色合金,1995(5):1-4.
【14】邢书明,李亚敏,胡汉起.半固态连铸过程拉漏(断)机理研究[J].特种铸造及有色合金,2000(1):16-19.
【15】尤江.铝合金铸件凝固过程的有限元数值模拟研究[D].沈阳:沈阳工业学院,1999.
【16】王祝堂,天荣璋.铝合金及其加工手册[M].长沙:中南工业大学出版社,2000.
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