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发明公开
CN108842151A 一种激光熔覆成形改善镁合金焊接接头的粉料 有权

一种激光熔覆成形改善镁合金焊接接头的粉料
摘要：
本发明涉及一种激光熔覆成形改善镁合金焊接接头的粉料，属于材料加工中的焊接工艺技术领域。开发出一种包含WC、TiC、B4C、Al2O3、TiO2、TiN陶瓷粉料和金属Ni的混合熔覆粉料，其中粉料各组份的质量百分比为：WC：0.001～4.5％，TiC：0.7～2.1％，B4C：1.5～3.2％，Al2O3：4.2～6.7％，TiO2：5.4～7.8％，TiN：6.3％～8.4％，Ni为余量。激光熔覆粉料粒径为50～200μm。采用激光熔覆技术在镁合金焊接接头表面形成一层性能良好的含纳米相熔覆层，该熔覆层可有效提高镁合金焊接接头的机械性能和耐磨性能。
摘要（英）：

The invention relates to powder formed by laser cladding for improving magnesium alloy welding joints, and belongs to the technical field of welding processes in the material machining. Mixed clad powder contains WC, TiC, B4C, Al2O3, TiO2, TiN ceramic powder and metal Ni; and the powder comprises the following components in percentage by mass: 0.001-4.5% of WC, 0.7-2.1% of TiC, 1.5-3.2% of B4C, 4.2-6.7% of Al2O3, 5.4-7.8% of TiO2, 6.3-8.4% of TiN, and the balance of Ni. The particle size of the laser clad powder is 50-200 microns. Nanometer phase-contained clad layers with excellent performances are formed on the surfaces of the magnesium alloy welding joints by adopting a laser cladding technology; and through the clad layers, the mechanical performances and the wear resistance of the magnesium alloy welding joints can be effectively improved.

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