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首页> 外文期刊>Journal of Manufacturing Processes >Effects of minor Zr addition on the microstructure and mechanical properties of laser welded joint of Al/SiC_p metal-matrix composite
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Effects of minor Zr addition on the microstructure and mechanical properties of laser welded joint of Al/SiC_p metal-matrix composite

机译：微量Zr对Al / SiC_p金属基复合材料激光焊接接头组织和力学性能的影响。

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摘要

Laser butt welding (LW) joints of aluminum-matrix composite with 10 vol% silicon carbide particle (SiCp) was compared between with and without the addition of zirconium (Zr). By adding zirconium (Zr) to the molten pool, ultimate tensile strength (UTS) of the joints were increased from about 65% of the UTS of the parent material (BM) to the equal UTS of BM. It was found that, by adding minor Zr into molten pool, porosity defects in welded seam zone (WM) disappeared; the residual SiC particles in WM were tightly bonded with the surrounding matrixes; generation of large size brittle phase Al4C3 was inhibited in the WM; fine ZrC precipitates with the size of 5-10 mu m was generated and uniformly distributed in the WM zone. These results highlight the possibilities for strengthening fusion welded joint of Al/SiCp metal-matrix composite by taking Zr as alloying element.
机译：比较了添加和不添加锆（Zr）的铝基复合材料与10％体积的碳化硅颗粒（SiCp）的激光对焊（LW）接头。通过将锆（Zr）添加到熔池中，接头的极限抗拉强度（UTS）从母体材料（BM）的UTS的约65％增加到相等的BM UTS。结果发现，通过向熔池中添加微量Zr，焊缝区（WM）的气孔缺陷消失了。 WM中残留的SiC颗粒与周围的基体紧密结合。在WM中抑制了大尺寸脆性相Al4C3的生成;生成了5-10微米大小的细ZrC沉淀，并均匀地分布在WM区域中。这些结果突出了以Zr为合金元素强化Al / SiCp金属基复合材料熔焊接头的可能性。

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