Microstructures and mechanical properties of Al nanocomposites hybrid-reinforced with B4C, carbon nanotubes and graphene nanoplatelets

被引：14
作者：
Wang, Xing [1 ,2 ]
Jiang, Xiaosong [1 ,2 ]
Sun, Hongliang [1 ,2 ]
Zhang, Yali [3 ]
Fang, Yongjian [3 ]
Shu, Rui [4 ]
机构：
[1] Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China
[2] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Sichuan, Peoples R China
[3] Sungkyunkwan Univ, Sch Mech Engn, 2066 Seobu Ro, Suwon 16419, Gyeonggi Do, South Korea
[4] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys IEK 4, D-52425 Julich, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2023年 / 293卷
关键词：
Nano-carbon; Al/B 4 C composite; Interfaces; Microstructure; Mechanical properties; STRENGTHENING MECHANISMS; MATRIX COMPOSITES; INTERFACIAL REACTION; NANO-CARBON; BEHAVIOR; DEFORMATION; EVOLUTION; DUCTILITY;
D O I：
10.1016/j.mseb.2023.116457
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To improve the mechanical properties of Al-30%B4C composites, modified carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) were added. The Al/B4C composites with different content of CNTs and GNPs were fabricated via ball milling and hot press. The B4C particles were homogeneously distributed, and the B4C/Al interface was tightly bonded due to AlB2 and Al3BC. With increase of CNTs content, the composites strength increased. The compressive strength of the Al-30%B4C-0.75%CNT-0.25%GNP composite was enhanced by 46% compared with that of the Al-30%B4C composite. The interface bonding and strengthening mechanisms of CNTGNP hybrid were studied in detail. The reinforcements mainly reinforced the nanocomposites by Orowan, dislocation, grain refinement strengthening and load transfer. After calculation, CNT-GNP hybrid has lower contribution in thermal mismatch and Orowan strengthening due to the larger size. The load transfer efficiency of the CNT-GNP hybrid was significantly higher than that of the CNTs and GNPs, as the optimised interface structure and interconnected structure of the hybrids contributed to its high strength.
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页数：13
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