Effect of magnetic-electric-ultrasonic fields on microstructure and properties of Ni60A laser cladding coating

IF 2.2 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters: X Pub Date : 2022-06-01 DOI:10.1016/j.mlblux.2022.100132

Houming Zhou, Zixin Chen, Mingfu Li, Yuxu Zhu, Caixing Xu, Jinhu Zhou

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引用次数: 5

Abstract

Ni60 coating is prepared utilizing laser cladding on 45 steel assisted by magnetic-ultrasonic-electric field. The effect of multi-physical fields on the cracking tendency, microstructure, phase composition, mechanical properties and corrosive resistance of coating is investigated. As results indicate, the macro-morphology of coating is affected by the multi-physical field and the microstructure is refined, which uniformizes the element distribution and prominently optimizes the tribological and anti-corrosive performance of coating, the number of cracks in the coating under multi-physical field reduce by 76.92%, compared with that without physical field, the average microhardness increases by 37.89%, the average friction coefficient decreases by 61.96%, the average wear loss decreases by 61.05%, the corrosive rate decreases by 93.01%.

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磁-电-超声场对Ni60A激光熔覆层组织和性能的影响

采用磁-超声-电场辅助激光熔覆45钢制备了Ni60涂层。研究了多种物理场对涂层开裂倾向、显微组织、相组成、力学性能和耐腐蚀性的影响。结果表明，多物理场影响涂层宏观形貌，使涂层微观组织细化，元素分布均匀，显著优化了涂层的摩擦学和防腐性能，多物理场作用下涂层裂纹数减少了76.92%，平均显微硬度比无物理场作用下提高了37.89%，平均摩擦系数降低了61.96%;平均磨损损失降低61.05%，腐蚀速率降低93.01%。

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