| 搅拌摩擦焊接三维流动模型 |
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| 引用本文： | 王大勇,冯吉才.搅拌摩擦焊接三维流动模型[J].焊接学报,2004,25(4):46-50. |
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| 作者姓名： | 王大勇 冯吉才 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 基金项目： | 国家 8 63计划项目 ( 2 0 0 2AA72 40 40 ) |
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| 摘 要： | 建立了搅拌摩擦焊焊接过程中塑性软化层的流动行为物理模型，该模型根据不同部位的流动特点将软化层的流动分成三部分，轴肩端面附近的软化层流动、搅拌针上部的软化层流动和搅拌针端部附近的软化层流动行为。轴肩端面附近的软化材料首先流入搅拌针行进过程中于搅拌针后部形成的空腔内，剩余软化材料围绕着轴肩侧面缓缓地由前进侧流动到搅拌针的后部，并于轴肩后部侧表面上形成了焊缝表面弧形纹的弧峰；搅拌针上部附近的软化层以剪切的方式从搅拌针前部流动到搅拌针后部；搅拌针端部附近的软化层以挤压的方式从搅拌针的前部流动到搅拌针的后部。
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| 关 键 词： | 搅拌摩擦焊 流动模型 三维 |
| 文章编号： | 0253-360X(2004)04-46-05 |
| 收稿时间： | 2003/7/31 0:00:00 |
3 dimensional flow modeling of friction stir welding |
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| WANG Da-yong and FENG Ji-cai.3 dimensional flow modeling of friction stir welding[J].Transactions of The China Welding Institution,2004,25(4):46-50. |
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| Authors: | WANG Da-yong and FENG Ji-cai |
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| Affiliation: | National Key Lab of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China and National Key Lab of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | This paper established a model about the flow process of softened material around rotational tool during friction stir welding. According to the flow pattern of different parts of softened material, the flow process was divided into three parts: flow process near the shoulder, near the pin top and near the pin end. The softened material near the shoulder firstly flew into the cavum behind the pin, and the residual material rotated around the shoulder side slowly, forming the arc crest of arc corrugation on friction-stir weld. The softened material near the pin top flew to retreating side from advancing side in a shear way. The softened material near the pin end flew to the retreating side from the advancing side in an extrusion way. |
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| Keywords: | friction stir welding flow model three dimension |
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