期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 213, 期 1, 页码 69-74出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2012.07.014
关键词
Friction stir lap welding; Cu-Ni alloy; Low-carbon steel; Shear strength
资金
- National Science Council of Taiwan (ROC) [NSC-98-2622-E-110-003-CC3]
Cu-Ni alloy and low-carbon steel were joined by friction stir lap welding (FSLW) with the help of a nickel coating. The appropriate welding parameters were investigated and the lap joints were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and shear strength testing. The shear strength of joints with a nickel coating was about 2.9 times as high as that of the joints without Ni coating. According to the EDS analysis of the fractured surfaces under the shear strength test, the micro-voids occurred in the Cu-Ni/steel interface without Ni coating, thus reducing the shear strength. These micro-voids were reduced in size using a nickel coating due to the self-diffusion in the Ni/Ni interface at high interface temperature and high contact pressure. The strong bonding mechanism using a nickel coating could be explained by the iron and copper atoms diffusing into the coating through the interface at high interface temperature and holding time. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据