东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (10): 1417-1421.DOI: 10.12068/j.issn.1005-3026.2014.10.012

• 材料与冶金 • 上一篇    下一篇

7050合金电流均匀化过程中的温度分布

贾品峰，何立子，张海涛，崔建忠   

  1. (东北大学 材料电磁过程研究教育部重点实验室， 辽宁 沈阳110819)
  • 收稿日期:2014-04-23 修回日期:2014-04-23 出版日期:2014-10-15 发布日期:2014-05-19
  • 通讯作者: 贾品峰
  • 作者简介:贾品峰(1981-)，男，辽宁鞍山人，东北大学博士研究生；何立子(1971-)，女，内蒙古包头人，东北大学教授；崔建忠(1950-)，男，黑龙江双城人，东北大学教授，博士生导师.
  • 基金资助:
    国家重点基础研究发展计划项目(2012CB723307).

Temperature Distribution of 7050 Alloy During Homogenization with Current

JIA Pinfeng， HE Lizi， ZHANG Haitao， CUI Jianzhong   

  1. Key Laboratory of Electromagnetic Processing of Materials， Ministry of Education， Northeastern University， Shenyang 110819， China.
  • Received:2014-04-23 Revised:2014-04-23 Online:2014-10-15 Published:2014-05-19
  • Contact: CUI Jianzhong
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摘要： 研究了电流、风机频率、冷却水和辅助加热对7050合金均匀化过程中温度场分布的影响.结果表明:单纯施加电流时，试样心部及表面温度分布十分不均匀.电流为1500A时，试样中心点处温度只能达到402℃.在电流加热过程中采用吹风方式，心部与表面温差为79℃.采用辅助加热后，心部与表面温差小于±5℃.利用ANSYS建立的温度场数学模型，预测电流为16000A、尺寸为100mm×200mm×2000mm试样的中心点心部温度为324℃，心部与表面温差为1℃.在铝合金均匀化过程中，施加1000A电流，可有效促进晶界残余相的溶解.

关键词: 电流, 均匀化, 7050合金, 工艺参数, 温度分布

Abstract: Influences of current， fan frequency， cooling water， auxiliary heating on the temperature distribution of 7050 alloy were investigated. When current is applied alone， the surface temperature and center temperature of sample are different significantly. When the current is 1 500 A， the center temperature reaches 402 ℃. The deviation between the center and surface temperatures is 79 ℃ when blowing air is used during the current heating process， and becomes less than ± 5 ℃ when the auxiliary heating is used. The mathematical model established by ANSYS was employed to predict the temperature field of the sample with size of 100 mm×200 mm×2000 mm. When the current is 16 000 A， the center temperature is 324 ℃， and the deviation between the center and surface temperatures is 1 ℃. The results provide the basis for designing the auxiliary heater. The dissolution of the residual grain boundary phases was accelerated when applying the current of 1000A during homogenization.

Key words: current, homogenization, 7050 alloy, heating parameters, temperature distribution

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