Numerical Simulation of Temperature Distribution during Electric Field Activated Sintering
摘 要
根据电磁理论及微/纳米尺度热波模型,建立了粉末电场活化烧结过程中温度场-电场耦合控制方程,利用有限元方法对纯钛粉试样电场活化烧结中的热电效应进行了数值模拟,得到电场活化烧结过程中模冲、阴模及试样内的电流密度、焦耳热及温度场分布.结果表明:电场活化烧结过程中存在较大的升温速率和径向温度梯度,电流密度的分布对焦耳热、温度场的分布有较大影响.实测温度值与有限元计算值变化趋势基本一致.
Abstract
A basic model for electric field activated sintering was presented by electromagnet theory,and the equations coupling electric field and temperature field were set up based on the theories of microscale heat transfer and electromagnetics.The thermoelectric phenomena in specimen,female die,punch during electric field activated sintering were simulated using the software FEMLAB.Numerical calculations were based on finite element analysis and the coupling of PDEs and electromagnetic modules.And the current density,resistance heating and temperature distributions in the specimen,female die,punch and their evolution during electric field sintering were obtained.The high heating rate and the obvious effect of current density on resistance heating,temperature distribution in specimen,female die,punch were found.The temperature of lower punch was measured using a thermocouple.The experimental results are in good agreement with those resulted from FEM,which indicates that FEM is valid analysis method to simulate temperature field in electric field activated sintering.
中图分类号 TF124
所属栏目
基金项目 国家杰出青年基金资助项目(50325516);广东省科技攻关重大项目(2003A1070302);广东省自然科学基金资助项目(05300306)
收稿日期 2005/10/17
修改稿日期 2006/6/26
网络出版日期
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备注杨俊逸(1978-),男,湖北孝感人,博士研究生.
引用该论文: YANG Jun-yi,LI Yuan-yuan,LI Xiao-qiang,GUO Liang,YANG Chao. Numerical Simulation of Temperature Distribution during Electric Field Activated Sintering[J]. Materials for mechancial engineering, 2006, 30(11): 73~76
杨俊逸,李元元,李小强,郭亮,杨超. 电场活化烧结温度场的数值模拟[J]. 机械工程材料, 2006, 30(11): 73~76
被引情况:
【1】游航,王贤瑞,梁翠,徐金富, "放电等离子烧结制备M42/45钢双金属复合材料及界面形成机理",机械工程材料 36, 56-59(2012)
【2】马人佺,曲秀荣,吕树臣,徐岩岩,崔乃庚, "镍掺杂对Ca3Co4O9+δ基陶瓷显微结构和电输运性能的影响",机械工程材料 40, 24-27(2016)
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参考文献
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【8】Wang Yucheng,Fu Zhengyi.Study of temperature field in spark plasma sintering[J].Materials Science and Engineering B,2002,90:34-37.
【9】Kim Hwan-tae,Kawahara Masakazu,Tokita Masao.Specimen temperature and sinterability of Ni powder by spark plasma sintering[J].Journal of the Japan Society of Powder and Powder Metallurgy,2000,47:887-891.
【10】Heian E M,Feng A,Munir Z A.A kinetic model for the field-activated synthesis of MoSi2/SiC composites:Simulation of SPS conditions[J].Acta Materialia,2002,50:3331-3346.
【11】Matsugi K,Kuramoto H,Hatayama T,et al.Temperature distribution at steady state under constant current discharge[J].Journal of Materials Processing Technology,2004,146:274-281.
【12】Anselmi-Tamburini U,Gennari S,Garay J E,et al.Fundamental investigations on the spark plasma sintering/synthesis process II.Modeling of current and temperature distributions[J].Materials Science and Engineering A,2005,394:139-148.
【13】刘静.微米/纳米尺度传热学[M].北京:科学出版社,2001.
【2】Anderson K R,Groza J R,Fendorf M,et al.Surface oxide debonding in field assisted powder sintering[J].Materials Science and Engineering A,1999,270:278-282.
【3】Omori M.Sintering,consolidation,reaction and crystal growth by the spark plasma system (SPS)[J].Materials Science and Engineering A,2000,287:183-188.
【4】Zavaliangos Antonios,Zhang Jing,Krammer Martin,et al.Temperature evolution during field activated sintering[J].Materials Science and Engineering A,2004,379:218-228.
【5】Vanmeensel K,Laptev A,Hennicke J,et al.Modelling of the temperature distribution during field assisted sintering[J].Acta Materialia,2005,53:4379-4388.
【6】Tomino H,Watanabe H,Kondo Y.Electric current path and temperature distribution for spark sintering[J].Journal of the Japan Society of Powder and Powder Metallurgy,1997,44:974-979.
【7】Ozaki K,Kobayashi K,Nishio T,et al.Sintering phenomena on initial stage in pulsed current sintering[J].Journal of the Japan Society of Powder and Powder Metallurgy,2000,47:293-297.
【8】Wang Yucheng,Fu Zhengyi.Study of temperature field in spark plasma sintering[J].Materials Science and Engineering B,2002,90:34-37.
【9】Kim Hwan-tae,Kawahara Masakazu,Tokita Masao.Specimen temperature and sinterability of Ni powder by spark plasma sintering[J].Journal of the Japan Society of Powder and Powder Metallurgy,2000,47:887-891.
【10】Heian E M,Feng A,Munir Z A.A kinetic model for the field-activated synthesis of MoSi2/SiC composites:Simulation of SPS conditions[J].Acta Materialia,2002,50:3331-3346.
【11】Matsugi K,Kuramoto H,Hatayama T,et al.Temperature distribution at steady state under constant current discharge[J].Journal of Materials Processing Technology,2004,146:274-281.
【12】Anselmi-Tamburini U,Gennari S,Garay J E,et al.Fundamental investigations on the spark plasma sintering/synthesis process II.Modeling of current and temperature distributions[J].Materials Science and Engineering A,2005,394:139-148.
【13】刘静.微米/纳米尺度传热学[M].北京:科学出版社,2001.
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