Huang Song-Jeng, Sanjaya Jeffry, Adityawardhana Yudhistira, Kannaiyan Sathiyalingam
Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106336, Taiwan.
Materials (Basel). 2024 Sep 23;17(18):4673. doi: 10.3390/ma17184673.
The light weight and high strength of magnesium alloys have garnered significant attention, rendering them suitable for various applications across industries. Nevertheless, to meet industrial requirements, the mechanical properties must be improved. This investigation explores the potential of graphene addition to enhance the mechanical properties of AM60B magnesium alloy. Tests were conducted on samples with different weight percentages (wt.%) of graphene (0 wt.%, 0.1 wt.%, and 0.2 wt.%) using stir casting. The elongation and tensile strength of the composite materials were also assessed. The phase composition, particle size, and agglomeration phenomena were analyzed using characterization techniques such as X-ray diffraction, optical microscopy, and SEM-EDS. The yield strength of the magnesium alloy was enhanced by approximately 13.4% with the incorporation of 0.1 wt.% graphene compared to the alloy without graphene. Additionally, an 8.8% increase in elongation was observed. However, the alloy tensile properties were reduced by adding 0.2 wt.% graphene. The tensile fractography results indicated a higher probability of brittle fracture with 0.2 wt.% graphene. Furthermore, regression analysis employing machine learning techniques revealed the potential of predicting the stress-strain curve of composite materials.
镁合金的轻质和高强度已引起广泛关注，使其适用于各个行业的各种应用。然而，为满足工业需求，必须改善其机械性能。本研究探讨了添加石墨烯以提高AM60B镁合金机械性能的潜力。使用搅拌铸造法对含有不同重量百分比（wt.%）石墨烯（0 wt.%、0.1 wt.%和0.2 wt.%）的样品进行了测试。还评估了复合材料的伸长率和拉伸强度。使用X射线衍射、光学显微镜和扫描电子显微镜-能谱分析（SEM-EDS）等表征技术分析了相组成、颗粒尺寸和团聚现象。与不含石墨烯的合金相比，加入0.1 wt.%石墨烯后，镁合金的屈服强度提高了约13.4%。此外，伸长率提高了8.8%。然而，添加0.2 wt.%石墨烯会降低合金的拉伸性能。拉伸断口分析结果表明，含有0.2 wt.%石墨烯时发生脆性断裂的可能性更高。此外，采用机器学习技术的回归分析揭示了预测复合材料应力-应变曲线的潜力。
