7075铝合金搅拌摩擦焊模拟与实验研究

doi:10.12068/j.issn.1005-3026.2021.03.006

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (3): 340-346.DOI: 10.12068/j.issn.1005-3026.2021.03.006

7075铝合金搅拌摩擦焊模拟与实验研究

冯莹莹¹，赵双²，刘照松¹，骆宗安¹

(1. 东北大学轧制技术及连轧自动化国家重点实验室，辽宁沈阳110819; 2. 鸿富锦精密电子有限公司，天津300457)

收稿日期:2020-06-28 修回日期:2020-06-28 接受日期:2020-06-28 发布日期:2021-03-12
通讯作者: 冯莹莹
作者简介:冯莹莹(1982-)，女，辽宁鞍山人，东北大学副研究员，博士; 骆宗安(1967-)，男，湖南桂阳人，东北大学教授.
基金资助:
国家重点研发计划项目(2018YFA0707302， 2018YFA0707304)；国家自然科学基金资助项目(51774085).

Experiment Study and Simulation for Friction Stir Welding Process of 7075 Aluminum Alloy

FENG Ying-ying¹， ZHAO Shuang²， LIU Zhao-song¹， LUO Zong-an¹

1. State Key Laboratory of Rolling and Automation， Northeastern University， Shenyang 110819， China; 2. Hongfujin Precision Electronics Co.， Ltd.， Tianjin 300457， China.

Received:2020-06-28 Revised:2020-06-28 Accepted:2020-06-28 Published:2021-03-12
Contact: LIU Zhao-song
About author:-
Supported by:
-

摘要/Abstract

摘要： 搅拌摩擦焊解决了7075铝合金难焊接问题，但焊接过程中复杂的温度、流场变化容易造成焊缝缺陷.本文利用FLUENT软件模拟研究了7075铝合金焊接过程温度场与流场的变化规律，并对模拟结果进行了验证.结果表明:前进侧焊接温度高于后退侧，但其材料流速低于后退侧，焊缝最高温度出现在轴肩边缘内侧.搅拌头转速越大，焊接速度越小，则焊接温度越高;搅拌头转速越大，材料流速越快，焊接速度对材料流速影响越小.在本文实验条件下，在转速-焊接速度为800r/min-100mm/min 时，可得到无缺陷焊缝.

关键词: 搅拌摩擦焊;7075铝合金;FLUENT;温度场;流场

Abstract: Friction stir welding (FSW) is used to solve the problem of the poor solderability of 7075 aluminum alloy. However， the complex changes of temperature and flow field are prone to cause defects. In this work， FLUENT software was used to study the changes of temperature and flow field of 7075 aluminum alloy during welding and the simulated results were verified. It is found that the temperature on the advancing side is higher， the flow rate is lower， and the maximum temperature appears inside the shoulder edge. When the rotation speed of the stirring head is higher， the welding speed becomes smaller， associated with a higher welding temperature. Meanwhile， the flow rate is faster and less affected by the welding speed. Under the conditions of the rotation speed-welding speed parameters of 800r/min-100mm/min，the defect-free weld can be achieved.

Key words: friction stir welding (FSW); 7075 aluminum alloy; FLUENT; temperature field; flow field

中图分类号:

TG456

冯莹莹，赵双，刘照松，骆宗安. 7075铝合金搅拌摩擦焊模拟与实验研究[J]. 东北大学学报（自然科学版）, 2021, 42(3): 340-346.

FENG Ying-ying， ZHAO Shuang， LIU Zhao-song， LUO Zong-an. Experiment Study and Simulation for Friction Stir Welding Process of 7075 Aluminum Alloy[J]. Journal of Northeastern University(Natural Science), 2021, 42(3): 340-346.

参考文献

[1]沈洋，王快社，吕爽，等.7075铝合金搅拌摩擦焊研究［J］.特种铸造及有色合金，2007，27(2):145-147.(Shen Yang，Wang Kuai-she，Lyu Shuang，et al.Research on friction stir welding of 7075 aluminum alloy［J］.Special-Cast and Non-ferrous Alloys，2007，27(2):145-147.)
[2]Wang G，Zhao Y，Hao Y.Friction stir welding of high strength aerospace aluminum alloy and application in rocket tank manufacturing［J］.Journal of Materials Science & Technology，2018，34(1):73-91.
[3]Panaskar N，Terkar R.A review on recent advances in friction stir lap welding of aluminium and copper［J］.Materials Today:Proceedings，2017，4(8):8387-8393.
[4]李继忠，赵华夏，栾国红.铝合金搅拌摩擦焊物理场三维数值模拟［J］.焊接学报，2016，37(5):15-18.(Li Ji-zhong，Zhao Hua-xia，Luan Guo-hong.Three-dimensional numerical simulation of the physical field of aluminum alloy friction stir welding［J］.Transactions of the China Welding Institution，2016，37(5):15-18.)
[5]Mishra R S，Ma Z Y.Friction stir welding and processing［J］.Materials Science and Engineering:R，2005，50 (1):1-78.
[6]Song M，Kovacevic R.Thermal modeling of friction stir welding in a moving coordinate system and its validation［J］.International Journal of Machine Tools and Manufacture，2003，43(6):605-615.
[7]李红克，史清宇，赵海燕，等.热量自适应搅拌摩擦焊热源模型［J］.焊接学报，2006，27(11):81-85.(Li Hong-ke，Shi Qing-yu，Zhao Hai-yan，et al.Heat source model of heat adaptive friction stir welding［J］.Transactions of the China Welding Institution，2006，27(11):81-85.)
[8]Chao Y J，Qi X，Tang W.Heat transfer in friction stir welding experimental and numerical studies［J］.Journal of Manufacturing Science and Engineering，2003，45(1):171-174.
[9]He X，Gu F，Ball A.A review of numerical analysis of friction stir welding［J］.Progress in Materials Science，2014，65:1-66.
[10]Schmidt H B，Hattel J H.Thermal modelling of friction stir welding［J］.Scripta Materialia，2008，58(5):332-337.
[11]Nandan R，Roy G G，Lienert T J，et a1.Numerical modelling of 3D plastic flow and heat transfer during friction stir welding of stainless steel［J］.Science and Technology of Welding & Joining，2006，11(5):526-537.
[12]Seidel T，Reynolds A.Two-dimensional friction stir welding process model based on fluid mechanics［J］.Science and Technology of Welding and Joining，2003，8(3):175-183.
[13]Gemme F，Verreman Y，Dubourg L.Numerical analysis of the dwell phase in friction stir welding and comparison with experimental data［J］.Materials Science and Engineering:A，2010，527(16/17):4152-4160.
[14]柯映林，董辉跃.7075铝合金厚板预拉伸模拟分析及其在淬火残余应力消除中的应用［J］.中国有色金属学报，2004，14(4):639-645.(Ke Ying-lin，Dong Hui-yue.Pre-stretching process and its application in reducing residual stress of quenched 7075 aluminum alloy thick-plates［J］.The Chinese Journal of Nonferrous Metals，2004，14(4):639-645.)
[15]Dialami N，Cervera M，Chiumenti M.Defect formation and material flow in friction stir welding［J］.European Journal of Mechanics-A/Solids，2020，80:103912.

7075铝合金搅拌摩擦焊模拟与实验研究

Experiment Study and Simulation for Friction Stir Welding Process of 7075 Aluminum Alloy

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价