Ultra-high concentration dispersion of graphene of nano-platelets (GNPs) was incorporated into Aluminum alloy AA5052-H32 using friction stir processing (FSP) to form metal matrix composite (MMC). For this purpose, grooves made in the AA5052-H32 were packed with the graphene nano-platelets and then FSP was applied in two steps; first using pinless tool at constant processing parameters of 1200 rpm and 100 traverse speed, second using conventional tool with pin and shoulder at the same processing parameters of (1200 rpm and 100 mm/min traverse speed). Scanning electron microscopy, Raman spectroscopy and X-ray diffraction analyses were used to examine the GNPs dispersion. The thermo-mechanical properties of the fabricated MMC were studied. Thermal conductivity, micro-hardness, tensile strength and fracture surface were examined before and after FSP. The measured thermal conductivity was improved by about 75% compared to the base metal due to the MMC with GNPs. Meanwhile, the hardness was increased from 67 Hv to 94 Hv and the ultimate tensile strength decreased from 238 to 196 MPa.

使用摩擦搅拌工艺（FSP）将超高浓度的纳米片状石墨烯（GNP）分散体掺入铝合金AA5052-H32中，以形成金属基复合材料（MMC）。为此，在AA5052-H32中制作的凹槽中填充了石墨烯纳米片，然后分两步应用FSP。首先使用无销工具以1200 rpm的恒定加工参数和100的横向速度，其次使用具有销和肩部的常规工具以相同的加工参数（1200 rpm和100 mm / min的横向速度）。使用扫描电子显微镜，拉曼光谱和X射线衍射分析来检查GNP的分散。研究了所制造的MMC的热机械性能。在FSP之前和之后检查热导率，显微硬度，拉伸强度和断裂表面。由于具有GNP的MMC，与贱金属相比，测得的热导率提高了约75％。同时，硬度从67 Hv增加到94 Hv，极限抗拉强度从238 MPa降低到196 MPa。