Article
Metallurgy & Metallurgical Engineering
Zhong Zheng, Xiao-xia Yang, Jian-chao Li, Xue-xi Zhang, Imran Muhammad, Lin Geng
Summary: The aluminum matrix composites with dispersed GNPs exhibited significantly improved mechanical properties compared to the pure aluminum matrix, attributed to the effective load transfer capacity of dispersed GNPs introduced via high-energy ball milling, spark plasma sintering, and hot extrusion techniques.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Multidisciplinary
Tao Wang, Yufeng Huang, Yunzhu Ma, Lei Wu, Huanyuan Yan, Chao Liu, Yang Liu, Bing Liu, Wensheng Liu
Summary: Through cold rolling deformation, the microstructure of P/M aluminum alloy gradually transforms, with reduced grain size, increased relative density, and enhanced tensile strength. The improved mechanical properties mainly result from the combined effects of increased microstructural compactness and deformation strengthening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Chemical
Emin Salur, Abdullah Aslan, Mustafa Kuntoglu, Mustafa Acarer
Summary: The study focused on producing yttria nanoparticle reinforced 7075 aluminum alloy composite using mechanical milling technique, which showed a significant enhancement in hardness and ultimate tensile strength compared to the reference aluminum alloy. Microstructural analysis was conducted to discuss the reasons behind the increase in mechanical properties.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Anna Wasik, Beata Leszczynska-Madej, Marcin Madej, Marcin Goly
Summary: Composite materials based on Al and Al4Cu with the addition of SiC particles were produced using low-cost conventional powder metallurgy processes. The study aimed to establish a relationship between vacuum sintering and the microstructure and mechanical properties of Al/SiC composites. Comprehensive microstructural and mechanical properties of the produced composites were measured.
Article
Mechanics
Yaqian Liang, Long Jiang, Xiukuang Zhang, Zhenxiang Pei, Qian Lei
Summary: Cr3C2 and graphite reinforced Cu-Sn matrix composites were fabricated and their microstructure, mechanical properties, and tribological properties were investigated. The results showed that the addition of Cr3C2 improved the high-temperature stability and wear resistance of the composites.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Farhad Saba, Behzad Nateq, Seyed Abdolkarim Sajjadi, Faming Zhang, Simin Heydari
Summary: The study adopted a smart method of low energy milling followed by high energy dry-milling to fabricate a heterogeneous 1.5 wt% CNT/Al matrix, which exhibited excellent mechanical properties with enhanced strength and ductility. This process has the potential to be applied in developing strong and ductile metal matrix composites with different nanofillers.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Iria Feijoo, Gloria Pena, Maria Julia Cristobal, Marta Cabeza, Pilar Rey
Summary: Aluminium matrix composites (AlMCs) of AA7075 aluminium alloy reinforced with 0.5 and 1 wt.% multiwall carbon nanotubes (MWCNTs) were fabricated using powder metallurgy techniques with varying mechanical milling strategies. The dispersion of MWCNTs was found to be influenced by milling conditions and MWCNT content. The best distribution of reinforcements was achieved by milling 7075 powders and MWCNTs in a high-energy cycle (HEBM) at a rotation speed between 1200 and 1300 rpm. Raman spectroscopy showed no damage to the nanotubes during the milling process, and nanoindentation tests revealed that the 7075-0.5 wt.% MWCNT composites had the best mechanical behavior.
Article
Chemistry, Multidisciplinary
Iris Carneiro, Jose V. Fernandes, Sonia Simoes
Summary: This study investigated the deformation behavior of aluminium reinforced by carbon nanotubes (Al/CNTs) nanocomposites during cold rolling. Deformation processes after production by conventional powder metallurgy routes can improve the microstructure and mechanical properties by reducing porosity. Metal matrix nanocomposites have great potential in producing advanced components, especially in the mobility industry, with powder metallurgy being one of the most commonly used production processes. Therefore, understanding the deformation behavior of nanocomposites is increasingly important. In this study, nanocomposites were produced via powder metallurgy and advanced characterization techniques were used to examine the microstructure of the powders and nanocomposites. The powder metallurgy route followed by cold rolling is reliable for Al/CNTs nanocomposites. The microstructural characterization revealed that the nanocomposites have a different crystallographic orientation than the Al matrix. CNTs in the matrix influence grain rotation during sintering and deformation. Mechanical characterization showed an initial decrease in hardness and tensile strength for the nanocomposites, which was attributed to the significant Bauschinger effect. The difference in mechanical properties between the nanocomposites and Al matrix was attributed to distinct texture evolution during cold rolling.
Article
Materials Science, Multidisciplinary
Farhad Saba, Malin Chen, Hossein Ziaei, Genlian Fan, Zhanqiu Tan, Zhiqiang Li
Summary: The proliferation of nanoreinforcements in a metal matrix composite is achieved through intragranular in-situ reactions. High-content multi-component hybrid-reinforced 6061Al composites were synthesized in-situ using TiO2-decorated carbon nanotubes (CNTs) and the matrix by flake powder metallurgy. The mechanical properties of the hybrid composite, such as high tensile strength and high Young's modulus, were significantly improved compared to the matrix, due to the in-situ formation of multi-components/nanophases with superior mechanical properties and high thermal stabilities.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Mahmut Can Senel, Mevlut Gurbuz
Summary: The addition of boron carbide and graphene to aluminum hybrid composites significantly improved Vickers hardness and compressive strength, with the best performance achieved at 30% boron carbide and 0.15% graphene content.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Composites
Z. Y. Xu, C. J. Li, P. Gao, X. You, R. Bao, D. Fang, J. M. Tao, J. H. Yi
Summary: A novel aluminum matrix composites with different lengths of CNTs and heterogeneous structural were prepared, showing improved mechanical properties due to synergistic effects and fiber-like reinforcement in the heterogeneous structure design.
COMPOSITES COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Shun Lv, Jinshan Li, Shufeng Li, Nan Kang, Biao Chen
Summary: The reinforcing effect of short carbon fibers (CFs) in Ti-6Al-4V (TC4) matrix composites was investigated through mechanical testing and microstructure analysis. It was found that CFs/TC4 composites exhibit ductile fracture at elevated temperatures, and the reinforcing effect of CFs becomes more prominent with increasing temperature.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
D. K. Q. Mu, Z. Zhang, Y. H. Xie, J. M. Liang, J. Wang, D. L. Zhang
Summary: By optimizing the high energy ball milling and spark plasma sintering time, the hardness and strength of the 5vol%SiC/AA2024 nanocomposite can be significantly enhanced, while improving its ductility. The strengthening mechanisms of the 5vol%SiC/AA2024 nanocomposite mainly come from nanoparticle strengthening and grain boundary strengthening.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Min Zeng, Ying Ling, Pengxiang Zhang, Xiaojian Dong, Ke Li, Hong Yan
Summary: In this study, Cu-coated CNTs were used to control the interfacial interaction between carbon nanotubes and aluminum matrix. The Cu nanoparticles act as a bridge connecting the carbon nanotubes and matrix, promoting better dispersion and interfacial bonding. Additionally, the deposition of Cu nanoparticles at the defects of carbon nanotubes helps repair the defects and inhibit the formation of brittle phases. As a result, the Cu-coated composite exhibits superior strength compared to the matrix and uncoated composite.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Xinfu Wang, Ying Huang, Tong Xu, Dan Wang, Xianyu Li, Weiguo Wang, Gangling Hao
Summary: Al matrix composites reinforced with Co-based hard particles (M7) were synthesized by powder metallurgy. The effects of sintering temperature, M7 particle content, and particle size on the microstructure and mechanical behavior were investigated. The results showed that higher sintering temperature led to increased interdiffusion reaction, thicker diffusion layer, and in-situ generated intermetallic compounds. The microhardness and yield strength improved with higher sintering temperature, increased M7 particle content, and smaller particle size. The M7/Al composites exhibited higher microhardness and strength compared to SiC/Al composites due to better interfacial wettability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
