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| 水下爆炸焊接制备NiTi合金与铜箔复合板 | |
| 引用本文： | 孙伟,李晓杰,闫鸿浩,刘凯欣.水下爆炸焊接制备NiTi合金与铜箔复合板[J].焊接学报,2012,33(10):63-66. |
| 作者姓名： | 孙伟 李晓杰 闫鸿浩 刘凯欣 |
| 作者单位： | 1. 大连理工大学工业装备结构分析国家重点实验室,大连,116023 2. 大连理工大学工业装备结构分析国家重点实验室,大连116023 北京大学湍流研究国家重点实验室,北京100871 3. 北京大学湍流研究国家重点实验室,北京,100871 |
| 基金项目： | 国家自然科学基金资助项目，辽宁省项目基金 |
| 摘 要： | 应用水下爆炸焊方法进行了NiTi形状记忆合金与铜箔的爆炸焊研究．利用大型有限元软件ANASYS／LS-DYNA对水下爆炸冲击波驱动飞板的飞行过程进行了数值模拟．飞板的飞行速度与爆炸焊产生射流的最小碰撞速度对比表明，可以实现焊接．通过分析微观组织和断裂机理，评估复合板焊接效果．结果表明，微观组织观察显示界面为连续均匀的波纹形态，界面结合处无裂纹，焊接性能良好．断口形貌分析显示断裂主要表现为解理和准解理断裂，界面处端口形貌与微观组织形态观察一致．水下爆炸焊方法将解决脆性、薄板金属用传统爆炸焊方法难以焊接的问题． |
| 关 键 词： | 形状记忆合金 水下爆炸焊 波纹形态 断口形貌 |
| 收稿时间： | 2011/8/8 0:00:00 |
Underwater explosive welding of NiTi alloy/copper foil |
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| SUN Wei,LI Xiaojie,YAN Honghao and LIU Kaixin.Underwater explosive welding of NiTi alloy/copper foil[J].Transactions of The China Welding Institution,2012,33(10):63-66. | |
| Authors: | SUN Wei LI Xiaojie YAN Honghao and LIU Kaixin |
| Affiliation: | State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China,State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;State Key Laboratory of Turbulence and Complex Systems, Peking University, Beijing 100871, China,State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China and State Key Laboratory of Turbulence and Complex Systems, Peking University, Beijing 100871, China |
| Abstract: | NiTi shape memory alloy cladded on a copper foil was fabricated by underwater explosive welding.The welding process was simulated using LS-DYNA.The numerical simulation gave the velocity of the flyer plate, and discussed based on the minimum velocity for jetting.Microstructure and fracture mechanism of the cladded metals were evaluated.The bond interface of the cladded metals shows a wavy morphology.The fracture mechanism of the composite showed predominantly quasi-cleavage and cleavage modes.Underwater explosive welding can solve the problem that materials with thin thickness and low formability difficult to bond by traditional explosive welding. |
| Keywords: | underwater explosive welding shape memory alloy wavy morphology fractograph |
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