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论文类型： 期刊论文

发表时间： 2012-06-01

发表刊物： JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY

收录刊物： SCIE、EI

卷号： 26

期号： 10-11

页面范围： 1733-1743

ISSN号： 0169-4243

关键字： Composite materials; underwater explosive welding; numerical analysis; microstructure; shape memory alloy

摘要： In recent years, the size and weight of products dealt with in industry have been getting smaller and smaller and micro-bonding and micro-processing technology has become important. Underwater explosive welding can be an alternative bonding method for very thin materials, with a low formability, and which are difficult to bond together by traditional explosive welding methods. In this study, NiTi shape memory alloy and copper foil were welded in this new method. The welding process was simulated using the commercially available package LS-DYNA. The numerical simulation gave the deformations of the flyer and the base plate, and the pressure distribution during the welding process. Microstructure and fracture mechanism of the welded metals were evaluated. The bond interface of the welded metals showed a wavy morphology and the fracture mechanism of the composite laminate showed a predominantly quasi-cleavage with cleavage modes. (C) Koninklijke Brill NV, Leiden, 2012