The mechanical and microstructural properties of NiAl-based intermetallic composites reinforced with graphene nanoplates (GNPs) were investigated. Three different graphene contents, 0.5, 1 and 1.5 wt.%, were considered to investigate its effect on the nanocomposite properties produced by mechanical alloying and spark plasma sintering. The results showed that in the presence of graphene, the bending strength improved by almost 52.7% compared to the pure NiAl due to homogenous distribution of GNPs, the grain refinement and strength of the graphene. Among all the produced samples, NiAl-1 wt.% GNPs exhibit the highest mechanical and microstructural properties such as toughness (6.21 GPa√m), microhardness (6.71 GPa) and bending strength (83.88 ± 4 MPa). The perovskite phase (Ni₃AlC_0.5) was formed by increasing the graphene up to 1.5 wt.%, which reduced the mechanical properties compared to the other samples.

研究了石墨烯纳米板（GNP）增强的NiAl基金属间复合材料的力学和微观结构性能。考虑了三种不同的石墨烯含量：0.5、1和1.5 wt。％，以研究其对通过机械合金化和火花等离子体烧结产生的纳米复合材料性能的影响。结果表明，在石墨烯的存在下，由于GNPs的均匀分布，晶粒细化和石墨烯的强度，与纯NiAl相比，弯曲强度提高了近52.7％。在所有生产的样品中，NiAl-1重量百分比的GNP表现出最高的机械和微观结构性能，例如韧性（6.21GPa√m），显微硬度（6.71 GPa）和弯曲强度（83.88±4 MPa）。钙钛矿相（Ni ₃ AlC _0.5通过将石墨烯增加至1.5 wt。％形成），与其他样品相比降低了机械性能。