AISI 431 bead-on-plates were deposited on AISI 1010 by laser cladding, since it is a well-known corrosion-resistant material. The effects of laser power, scanning speed, powder feed rate and focal distance on the coatings’ geometry and dilution ratios, as well as microstructure evolution, iron dilution and microhardness of the beads were evaluated by optical and electron scanning microscopes, the last one coupled with x-ray energy dispersive spectroscopy, and microhardness test. The results showed that the clad height is mainly influenced by the scanning speed, while for the width, laser power, scanning speed and focal distance were crucial. Changing laser power has a more marked effect on the dilution than on the aspect ratio, while changing scanning speeds and focal distance shows a marked effect on both dilution and aspect ratio. The microstructure of coating zone is mainly composed by lath martensite. Furthermore, the average hardness by microindentation of the AISI 431 stainless steel cladding coating was about 5 times higher than that of the substrate.

AISI 431 Bead-on-plates 通过激光熔覆沉积在 AISI 1010 上，因为它是一种众所周知的耐腐蚀材料。通过光学和电子扫描显微镜评估激光功率、扫描速度、送粉速度和焦距对涂层几何形状和稀释比的影响，以及微珠的微观结构演变、铁稀释和显微硬度，最后一个耦合用 X 射线能谱仪和显微硬度测试。结果表明，包层高度主要受扫描速度的影响，而对于宽度，激光功率、扫描速度和焦距是至关重要的。改变激光功率对稀释的影响比对纵横比的影响更显着，而改变扫描速度和焦距对稀释和纵横比都有显着影响。涂层区显微组织主要由板条马氏体组成。此外，AISI 431 不锈钢覆层的显微压痕平均硬度比基材高约 5 倍。