激光熔覆WC颗粒增强涂层成形机理研究

利用两相流体动力学原理,讨论了含碳化钨不混溶颗粒增强涂层的成形机理,结果表明碳化钨粒子在涂层中的分布状态主要取决于熔池中的熔融主相合金材料的流动性,依据激光能量与流动性关系,建立了相应的物理模型,并列举了一个实验实例.

Study on Forming Mechanism of Laser Cladding Composite Coating Reinforced by WC Particles

In this paper, making use of dynamics theory of two-phase fluid, the author discussed the forming mechanism of laser cladding coat that it contained solid phase WC particles, which they were not dissolved in forming process of cladding coat. The results showed that the distributing state of WC particles depended mainly on the fluid of main phase melting material (Ni60 self-melting alloy) in the pool, and the fluid was related with laser energy density. The forming physical models were built by means of energy theory, and a test example was applied to testify these results.