Graphene (Gr)-reinforced 316L stainless steel (Gr/SS 316L) composite was fabricated through the selective laser melting (SLM) technique to avoid the agglomeration of graphene and develop a composite that has higher specific strength. Here, 316L stainless steel and graphene powder was first mixed using ball milling. The formed mixture was then used as raw powder for the SLM system. The fabricated composite underwent hardness and tensile tests. The obtained results reveal that the properties of the composite significantly improve with the addition of 0.2 wt% Gr. The hardness and yield strength of the composite increased by up to 25% (from 194 to 245 HV) and 70% (from 502 to 850 MPa), respectively. Experimental values were also compared with the theoretically calculated results, and the possible reasons behind the variation in both values were discussed. A micrograph and electron backscatter diffraction map of the composite was analysed under a field-emission scanning electron microscope to determine the microstructure and grain orientation. Raman mapping and X-ray diffraction were performed to analyse the distribution of Gr in the matrix and its effect on the formation of carbide, respectively. Finally, the SLM technique was found to be a practical method for synthesising Gr/SS 316L composites with superior mechanical properties.

通过选择性激光熔融（SLM）技术制备了石墨烯（Gr）增强的316L不锈钢（Gr / SS 316L）复合材料，从而避免了石墨烯的团聚并开发出具有更高比强度的复合材料。在这里，首先使用球磨将316L不锈钢和石墨烯粉末混合。然后将形成的混合物用作SLM系统的原料粉末。制成的复合材料经过了硬度和拉伸测试。所获得的结果表明，通过添加0.2wt％的Gr，复合材料的性能显着改善。复合材料的硬度和屈服强度分别提高了25％（从194到245 HV）和70％（从502到850 MPa）。实验值也与理论计算结果进行了比较，并讨论了两个值变化背后的可能原因。在场发射扫描电子显微镜下分析了复合材料的显微照片和电子背散射衍射图，以确定其显微组织和晶粒取向。进行了拉曼作图和X射线衍射，分别分析了Gr在基体中的分布及其对碳化物形成的影响。最后，发现SLM技术是一种合成具有优良机械性能的Gr / SS 316L复合材料的实用方法。进行了拉曼作图和X射线衍射，分别分析了Gr在基体中的分布及其对碳化物形成的影响。最后，发现SLM技术是一种合成具有优良机械性能的Gr / SS 316L复合材料的实用方法。进行了拉曼作图和X射线衍射，分别分析了Gr在基体中的分布及其对碳化物形成的影响。最后，发现SLM技术是一种合成具有优良机械性能的Gr / SS 316L复合材料的实用方法。