...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of manufacturing processes >Application of linear friction welding for joining ultrafine grained aluminium
【24h】

Application of linear friction welding for joining ultrafine grained aluminium

机译：Application of linear friction welding for joining ultrafine grained aluminium

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Ultrafine grained (UFG) materials are of great potential in industry due to their enhanced mechanical strength and other promising features, such as ability to superplastic deformation or excellent corrosion resistance. Nevertheless, one of the main limitations lies in their low thermal stability, which leads to excessive grain growth at elevated temperature. It influences mainly further processes performed at high temperature, such as joining. It causes detrimental problems during conventional fusion welding, as significant grain growth is observed and therefore the advantages as a result of small average grain size disappear. Therefore, the idea of applying solid state joining process seems to be suitable for UFG materials. Among the group of solid state welding processes there are methods based on friction. One of these methods, which is suitable for samples in the form of rectangular bars, is linear friction welding (LFW). Present study is the first comprehensive work describing the results of UFG aluminium welded using LFW method with additional emphasis put on a position of shear planes of welded samples. The results have shown, that UFG regime has not been preserved in a weld zone. Welding of UFG sample with an average grain size of 1 mu m resulted in a grain growth in weld zone to 1.6-2 mu m. Chosen parameters allowed to weld samples only locally, nevertheless, results from tensile tests performed on mini samples showed a great potential of the LFW method for joining UFG samples. The tensile strength of welds was in the range of 83-90 % of initial material.y

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号