• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>TMS annual meeting exhibition >JOINING OF ADVANCED ALUMINUM-GRAPHITE COMPOSITE
【24h】

JOINING OF ADVANCED ALUMINUM-GRAPHITE COMPOSITE

机译：先进的铝-石墨复合材料的连接

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Advanced aluminum graphite composites have unique thermal properties due to opposite coefficients of thermal expansion of aluminum and graphite. The thermal and mechanical properties of such composites are anisotropic due to directional properties of graphite fibers and their designed orientation. A joint of components with different fiber orientations would theoretically produce an isotropic material for thermal management purpose. This paper presents research results for welding and brazing of the composite using different joining techniques. A laser beam melts the matrix and delaminates graphite fibers. The molten aluminum reacts with graphite to form aluminum carbide AI4C3. The joint strength is compromised when laser welding at optimal conditions to minimize the carbide formation. Brazing is preferred since the low melting temperature of a filler material suppresses the formation of AI4C3 while minimizing shrinkage cavities in the joint. Microstructural study and shear test confirm the success of joining this composite by laser brazing and resistance brazing with Zn-Al filler.
机译：先进的铝石墨复合材料由于铝和石墨的热膨胀系数相反而具有独特的热性能。由于石墨纤维的定向特性及其设计取向，这种复合材料的热和机械性能是各向异性的。理论上，具有不同纤维取向的组件的接头将产生用于热管理目的的各向同性材料。本文介绍了使用不同的连接技术对复合材料进行焊接和钎焊的研究结果。激光束熔化基体并使石墨纤维分层。熔融铝与石墨反应形成碳化铝AI4C3。在最佳条件下进行激光焊接时，为了最大程度地减少碳化物的形成，会降低接头强度。钎焊是优选的，因为填充材料的低熔化温度抑制了Al 4 C 3的形成，同时使接合处的收缩腔最小。显微组织研究和剪切试验证实了通过激光钎焊和电阻钎焊与Zn-Al填料将这种复合材料连接起来的成功。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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