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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Experimental characterizations of laser cladding of iron- and nickel-based alloy powders on carbon steel 1045 for remanufacturing
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Experimental characterizations of laser cladding of iron- and nickel-based alloy powders on carbon steel 1045 for remanufacturing

机译：铁和镍基合金粉末在碳钢1045上的激光熔覆再制造的实验特性

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摘要

The purpose of this investigation is to test the laser cladding of different alloy powders onto 1045 medium-carbon steel substrates for parts remanufacturing. The types of alloy powder, laser output powers, and scanning speeds are selected as influencing factors to conduct laser cladding experiments with orthogonal design on the carbon steel 1045 substrate. Bonding shear strength and microhardness of the cladding layer and the substrate are tested and analyzed. The high resolution scanning electron microscopy and energy dispersive X-ray spectroscopy are also used to analyze cladding layers, microstructures, and elements. The experimental results show that a good metallurgical bond is formed between the cladding layer and the substrate without porous cracks and other defects. Shear stress intensity of nickel-based powder is two to three times higher than that of substrate material, while iron-based powder is five times higher than the substrate material. The type of the powder is the most significant factor and laser power is the least. The hardness of outer cladding layer is higher than that of bonding section and inner section. In the heat-affected zone, hardness is higher than that of the substrate material.
机译：这项研究的目的是测试不同合金粉末在1045中碳钢基底上的激光熔覆，以进行零件再制造。选择合金粉末的类型，激光输出功率和扫描速度作为影响因素，以便在碳钢1045基板上进行正交设计的激光熔覆实验。测试和分析了包层和基底的结合剪切强度和显微硬度。高分辨率扫描电子显微镜和能量色散X射线光谱学也可用于分析熔覆层，微结构和元素。实验结果表明，在包层和基底之间形成了良好的冶金结合，而没有多孔裂纹和其他缺陷。镍基粉末的剪切应力强度是基体材料的二到三倍，而铁基粉末则是基体材料的五倍。粉末的类型是最重要的因素，而激光功率是最小的。外包层的硬度高于结合部分和内部的硬度。在热影响区，硬度高于基底材料的硬度。

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