Interfacial reaction and interfacial strengthening mechanism of graphene nanosheets reinforced powder metallurgy nickel-based superalloy composite

被引：10
作者：
Gao, Yuxi [1 ,2 ,3 ]
Zou, Jinwen [3 ]
Wang, Huaming [2 ]
Han, Yongquan [1 ]
机构：
[1] Inner Mongolia Univ Technol, Sch Mat Sci & Engn, 49 Aimin St, Hohhot 010051, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, 37 Xueyuan Rd, Beijing 100191, Peoples R China
[3] Aero Engine Corp China, Beijing Inst Aeronaut Mat, Sci & Technol Adv High Temp Struct Mat Lab, Beijing 100089, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2023年 / 205卷
关键词：
Nickel based superalloy; Graphene; Orientation relationships; Interfacial carbide formation; LOAD-TRANSFER; GRAIN-GROWTH; BEHAVIOR; MICROSTRUCTURE; STATE; TICX;
D O I：
10.1016/j.matchar.2023.113282
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Graphene nanosheet (GNS) reinforced nickel based superalloy (FGH96) composites with various interfacial reaction degrees were fabricated by powder metallurgy of Hot Isostatic Pressing (HIP) at sintering temperature range of 1120-1190 degrees C. The interfacial reaction products [Ti, Nb]C particles were formed in FGH96 metal matrix composite by the in-situ reaction between homogeneously-dispersed GNS and FGH96 matrix. In addition, the interfacial reaction products determined by Transmission Electron Microscopy, the interfacial structure was also determined and named clean interface, transition zone and in-situ generation of metal carbides interface. The interfacial [Ti, Nb]C particles on partially reacted with GNS, led to significant improvement of interfacial strength and consequent reinforced the mechanical transfer efficiency in FGH96 metal matrix consequently, compared to those FGH96 without GNS. The role of interfacial [Ti, Nb]C particles played in determining the interfacial bonding strength and interfacial bonding mode of GNS was discussed. This work emphasizes the importance of the interface state of GNS on the interface structure in metal matrix composites, and may provide new insights into the interfacial phenomena and load transfer mechanism in GNS reinforced metal matrix composites.
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页数：12
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