Microstructure and interface interaction in laser induction hybrid cladding of Ni-based coating
Microstructure and interface interaction in laser induction hybrid cladding of Ni-based coating
复制标题
DOI：
10.1016/j.apsusc.2008.10.050
复制
发表时间：
2009-01-15
影响因子：
6.7
通讯作者：
Zhou, Shengfeng
中科院分区：
文献类型：
--
作者：
Huang, Yongjun;Zeng, Xiaoyan;Zhou, Shengfeng
在三种不同激光能量和感应能量的送粉激光感应复合熔覆试验的基础上，研究了镍基涂层的显微组织和镍基涂层与钢的界面特征。结果表明，复合熔覆能量(包括激光能量和感应能量)对界面的形成和以树枝晶为特征的镍基涂层组织有重要影响。此外，激光和感应能量可以相辅相成。当复合熔覆能量较高时，涂层与基材的界面形成了单一的Fe-Ni-Cr固溶体，而镍基涂层的显微硬度下降。低杂化熔覆能量时，界面两侧分别形成了Fe-Ni-Cr和Ni-Fe-Cr固溶体相，且镍基涂层的显微硬度较高。在激光感应复合熔覆过程中，涂层与基材之间形成了以白光层为特征的冶金结合，通过适当调节激光能量和感应能量，可以控制冶金反应的程度。(C)2008爱思唯尔B.V.保留所有权利。
Based on the powder feeding laser induction hybrid cladding experiments by means of three different laser and induction energy, the microstructure of Ni-based coating and interface characteristics between the Ni-based coating and steel substrate were investigated. The results show that the hybrid cladding energy including laser and induction energy has an important influence on the formation of the interface and the microstructure of the Ni-based coating characterized by the dendrite. In addition, the laser and induction energy can complement each other. For high hybrid cladding energy, the single phase Fe-Ni-Cr solid solution is formed at the interface between the coating and substrate, while the microhardness of the Ni-based coating decreases. For low hybrid cladding energy, the solid solution phases of Fe-Ni-Cr and Ni-Fe-Cr are respectively obtained on both sides of the interface and microhardness of the Ni-based coating is relatively high. During laser induction hybrid cladding, the metallurgical bond characterized by the white light layer is achieved between the coating and substrate, and the extent of metallurgical reaction can be controlled by adjusting the laser energy and induction energy appropriately. (C) 2008 Elsevier B. V. All rights reserved.