| 2024-T3铝合金搅拌摩擦焊接中搅拌头尺寸和搅拌针形状影响的数值模拟 |
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| 引用本文： | 张昭,吴奇,张洪武. 2024-T3铝合金搅拌摩擦焊接中搅拌头尺寸和搅拌针形状影响的数值模拟[J]. 中国有色金属学会会刊, 2014, 24(10): 3293-3301. DOI: 10.1016/S1003-6326(14)63469-5 |
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| 作者姓名： | 张昭 吴奇 张洪武 |
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| 作者单位： | 大连理工大学 |
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| 基金项目： | Project(NCET-12-0075)supported by the Program for New Century Excellent Talents in University,China;Project supported by the Fundamental Research Funds for the Central Universities,China;Projects(11172057,11232003)supported by the National Natural Science Foundation of China;Project(2011CB013401)supported by the National Basic Research Program of China;Project(2012AA050901)supported by the National High-Tech Research and Development Program of China |
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| 摘 要： | 采用完全热力耦合模型研究了搅拌针直径、轴肩直径以及搅拌针锥角对2024-T3铝合金搅拌摩擦焊接过程中热生成、材料变形和能量历史的影响。结果表明：相比搅拌针接触面,轴肩接触面对搅拌摩擦焊接的热生成起主要作用。增加轴肩直径和减小搅拌针直径均能增加焊接温度,但是轴肩尺寸变化的影响更为明显。与6061-T6铝合金的搅拌摩擦焊接过程相比,2024-T3铝合金搅拌摩擦焊接的能量输入明显增加,同时塑性耗散与摩擦耗散的能量比减小。
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| 关 键 词： | 铝合金 搅拌摩擦焊 完全热力耦合模型 热生成 能量历史 |
| 收稿时间： | 2013-10-08 |
Numerical studies of effect of tool sizes and pin shapes on friction stir welding of AA2024-T3 alloy |
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| Zhao ZHANG,Qi WU,Hong-wu ZHANG. Numerical studies of effect of tool sizes and pin shapes on friction stir welding of AA2024-T3 alloy[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(10): 3293-3301. DOI: 10.1016/S1003-6326(14)63469-5 |
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| Authors: | Zhao ZHANG Qi WU Hong-wu ZHANG |
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| Affiliation: | (State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China) |
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| Abstract: | Coupled thermo-mechanical model was used to investigate the effects of the pin diameter, the shoulder diameter and the in conical angle on the heat generations, the material deformations and the energy histories in friction stir welding（FSW） of AA2024-T3 alloy. Results indicate that the shoulder-plate contact area takes more important contribution to the heat generation than the pin-plate contact area. The increase of the shoulder diameter or the decrease of the pin diameter can lead to the increase of the welding temperature in FSW, but the change of shoulder size is more important. Compared to the cases in FSW of AA6061-T6, the input power is obviously increased in FSW of AA2024-T3 and the ratio of the plastic dissipation to the friction dissipation becomes decreased. |
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| Keywords: | aluminum alloy friction stir welding coupled thermo-mechanical model heat generation energy history |
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