采用FeCrNi合金粉末在FV520B 钢的梯形槽内构建多道激光熔覆涂层，并研究热处理对FeCrNi激光熔覆涂层的显微组织和力学性能的影响。实验结果表明，1073 K到1273 K热处理的二次淬火效应能够细化基体材料的晶粒，从而除去熔合区和母材之间的硬度软区。当热处理温度为1073 K时，抗拉强度达到了最大值。然而这种高温热处理对涂层的耐磨性有一定程度的不利影响。
The FeCrNi alloy powders were used on the dovetail groove of FV520B steel to fabricate the multilayer laser cladding layers. The effects of heat treatment on the microstructure and mechanical properties of FeCrNi layers were investigated. The results showed that the heat treatment at the temperature ranged from 1073 to 1273 K refined the grains of the substrate materials and removed the soft zone of hardness between the fused zone (FZ) and base material (BM) effectively mainly due to a secondary quench of heat treatment. When the temperature of heat treatment was 1073 K, the maximum ultimate tensile strength (UTS) values of the laser cladding component were obtained. However, the heat treatment at high temperature had a bad effect on wear resistance of coatings at some extent.
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