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Microstructure and Mechanical Performance of Graphene Nanosheets Reinforced Nickel-Based Superalloy FGH95 Composite

机译:石墨烯纳米片增强镍基高温合金FGH95复合材料的组织和力学性能

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摘要

Graphene nanosheet (GNS)-reinforced nickel-based superalloy FGH95 (GNSs/FGH95) matrix composites are prepared via the powder metallurgy approach. Scanning electron microscopy, transmission electron microscope and static tensile tests are used to investigate the microstructure and mechanical properties of GNS-reinforced nickel-based superalloy FGH95. Mechanical properties and failure behavior at room temperature and high temperature are studied. Static tensile tests at room temperature and high temperature confirm that the strength and plasticity of GNS-reinforced FGH95 have been improved, compared to the unreinforced superalloy. The results show that with the increase of temperature, the failure behavior of GNSs/FGH95 composite changes from the interface debonding of the GNSs/matrix to the failure of the FGH95 matrix. This work suggests that GNSs/FGH95 composite has great potential to be a structural material in aero-engine fields.
机译:通过粉末冶金方法制备了石墨烯纳米片(GNS)增强的镍基高温合金FGH95(GNSs / FGH95)基复合材料。扫描电子显微镜,透射电子显微镜和静态拉伸试验用于研究GNS增强镍基高温合金FGH95的组织和力学性能。研究了室温和高温下的力学性能和破坏行为。在室温和高温下的静态拉伸试验证实,与未增强的高温合金相比,GNS增强的FGH95的强度和塑性得到了改善。结果表明,随着温度的升高,GNSs / FGH95复合材料的破坏行为从GNSs /基体的界面剥离变为FGH95基质的破坏。这项工作表明,GNSs / FGH95复合材料在航空发动机领域具有巨大的结构材料的潜力。

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