In-situ (Ti,Nb)C/Graphene synergistic enhancement of strength and toughness in IN718 composites

被引：0
作者：
Ma, Shuan [1 ]
Zhang, Wei [2 ,3 ]
Yang, Yanjie [2 ,3 ]
Zhou, Shiqi [2 ,3 ]
Du, Quanbin [5 ]
Li, Ang [5 ]
Wang, Shaolan [4 ]
Liu, Mabao [2 ,3 ]
机构：
[1] Lanzhou Univ, Sch Mat & Energy, Lanzhou 730000, Gansu, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Peoples R China
[4] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Shaanxi Key Lab Green Preparat & Functionalizat In, Xian 710021, Peoples R China
[5] Henan Mech & Elect Vocat Coll, Henan Key Lab Intelligent Mfg Equipment Integrat S, Zhengzhou 451191, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2025年 / 927卷
基金：
中国博士后科学基金;
关键词：
Graphene; GNSs-IN718; composite; 3D rock-milling; Spark plasma sintering; Mechanical properties; MECHANICAL-PROPERTIES; GRAPHENE; MICROSTRUCTURE; NICKEL; NANOCOMPOSITES; BEHAVIOR; NETWORK;
D O I：
10.1016/j.msea.2025.148039
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Graphene shows promise as a reinforcement for metal matrix composites, though its tendency to agglomerate limits uniform distribution. This study presents a facile in-situ approach to produce graphene from graphite balls to reinforce Inconel718. The process yielded a (Ti,Nb)C/graphene core-shell structure via 3D rock milling and spark plasma sintering (SPS), enhancing graphene nanosheets (GNSs) uniformity and load transfer. Using scanning electron microscopy (SEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), we analyzed the microstructure and mechanical properties of graphene nanosheets-IN718 (GNSs-IN718) composites. The 0.3GNSs-IN718 composite exhibited improved microstructure and mechanical properties, driven by grain refinement, dislocation strengthening, and load transfer, verified through molecular dynamics simulations. This approach offers new directions for metal matrix composites design in aerospace.
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页数：9
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