不同合金熔接涂层与基体结合状态及硬度研究

Study on the hardness and the bonding state between different alloy cladding coatings and substrates

为有效修复再制造扭力轴,通过试验研究不同合金粉末熔接涂层及不同厚度熔接涂层与基体的结合状态及力学性能。结果表明:所研究的合金粉末材料均能与基体形成结构致密的冶金结合;随着涂层厚度的增加,熔接涂层与基体界面的分界线越来越明显;熔接涂层的硬度远高于基体的硬度,具有良好的力学性能和耐磨性能。

In order to effectively repair and remanufacturing the torsion shaft,the bonding state and mechanical properties of different alloy powder cladding coatings and different thickness cladding coatings and substrate were studied by experiment. The results show that all the alloy powder materials can combine with the matrix to form a dense metallurgical structure. With the increase of coating thickness,the dividing line between weld coating and matrix interface becomes more and more obvious. The hardness of the alloy melt coating is much higher than that of the substrate,and it has good mechanical properties and wear resistance.