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热处理对GNP-Al复合材料显微组织和性能的影响

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本文以石墨烯为增强相,采用高能超声辅助铸造法及后续热处理制备了铝基复合材料,并研究石墨烯和热处理对复合材料显微组织、力学性能和耐磨性能的影响.结果表明,石墨烯促进了复合材料晶粒细化,且热处理后Si相进一步细化及圆整.经热处理后复合材料的屈服强度和抗拉强度(245和319 MPa)比基体(119和202 MPa)分别提高了 105.9%、57.9%.磨损试验结果表明,添加石墨烯和T6热处理后复合材料的磨损率最低,磨损机制由剥层磨损转变为磨粒磨损.
Effect of heat treatment on microstructure and performance of GNP-Al composites
In this paper,graphene-reinforced aluminum matrix composites were prepared by high-energy ultrasound-assisted casting and subsequent heat treatment.Effect of graphene and heat treatment on the microstructure,mechanical properties and wear resistance of composites were investigated.The results show that the graphene promotes the grain refinement of the composites,and the Si phases are further refined and rounded after heat treatment.The yield strength and tensile strength of composites after heat treatment(245 and 319 MPa)are increased by 105.9%and 57.9%,respectively,com-pared with those of the matrix(119 and 202 MPa).The results of the wear test show that the lowest wear rate is observed in the composites after the addi-tion of graphene and T6 heat treatment,and the wear mechanism is changed from exfoliation wear to abrasive wear.

graphenealuminum matrix compositesheat treatmentmicrostructurewear resistance

简正豪、邹金红、陈佳、赵英、曾敏

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南昌工学院机械与车辆工程学院,江西南昌 330108

南昌航空大学 航空制造工程学院,江西南昌 330063

石墨烯 铝基复合材料 热处理 显微组织 耐磨性能

江西省教育厅科技项目江西省教育厅科技项目

GJJ212512GJJ212522

2024

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沈阳铝镁设计研究院

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影响因子:0.358
ISSN:1002-1752
年,卷(期):2024.(6)
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