Article
Materials Science, Multidisciplinary
Haining Yao, Ke Chen, Katsuyoshi Kondoh, Xianping Dong, Min Wang, Xueming Hua, Aidang Shan
Summary: This study investigates the microstructure and mechanical properties of the dissimilar joint between high entropy alloys and Al alloy. A nanoscale interfacial layer was found at the interface, and microsegregation of elements was observed in this layer. The study suggests that high interfacial metallurgical bonding was achieved in the joint.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Yan Wang, Yuhua Chen, Jilin Xie, Jiaming Ni, Timing Zhang, Shanlin Wang, Limeng Yin
Summary: A novel RFE process was used to fabricate CrMnFeCoNi HEA particles reinforced AMCs. The study showed that HEA particles reacted violently with the Al matrix, leading to the formation of fine grains and numerous second phases. The AMCs exhibited enhanced tensile strength compared to RFEed Al, but lower uniform elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Jiqiang Ma, Chenglong Fan, Wenyuan Chen, Hui Tan, Shengyu Zhu, Qinglin Li, Jun Yang
Summary: Aluminum matrix composites with in situ core-shell structure were prepared successfully using powder metallurgy. The core-shell structure formed by Al3Ni and NiAl reinforces the aluminum matrix and enhances the mechanical and tribological properties of the composites. The N15 composite reinforced with 15 vol% Ni3Al exhibits excellent comprehensive properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Kaiguang Luo, Shilei Liu, Hanqing Xiong, Yun Zhang, Charlie Kong, Hailiang Yu
Summary: The effect of different mass fractions of HEAp on the microstructure and mechanical properties of AMCs was studied, and it was found that AMCs containing 3% HEAp exhibited the best mechanical properties. The fracture mechanism changed with increasing HEAp content.
METALS AND MATERIALS INTERNATIONAL
(2022)
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)
Article
Chemistry, Multidisciplinary
Yu Liu, Guangping Zheng
Summary: The present study investigates the interfacial behaviors and mechanical properties of AlCoCrFeNi high-entropy alloy reinforced aluminum matrix composites (AMCs) through first-principles calculations. The stability of the HEA-reinforced AMCs is found to be strongly dependent on the chemical compositions in the interfacial regions. The interfacial energy of the Al(001)/Al20Co19Cr19Fe19Ni19(001) interfaces is calculated to vary, suggesting favorable formation of interfaces at the (100) atomic plane. Ni stabilizes the interface while Al deteriorates its stability. The HEA-reinforced AMCs show improved Young's modulus and meaningful plasticity under tension, which are related to the chemical compositions at the interfaces.
Article
Chemistry, Physical
Yusheng Tian, Wenzhe Zhou, Mingxu Wu, Hua Luo, Qingbiao Tan, Guoliang Zhu, Anping Dong, Da Shu, Baode Sun
Summary: Refractory high entropy alloy TiZrHfNbTa matrix composites reinforced with in-situ nitrides were prepared by vacuum arc melting. The composites showed enhanced strengths both at room temperature and high temperature, and the strength increased with the increment of N content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
Qinglin Li, Xuepeng Bao, Shang Zhao, Yuqian Zhu, Yefeng Lan, Xianyu Feng, Qiang Zhang
Summary: The study showed that increasing the content of AlFeNiCrCoTi high-entropy alloy in aluminum matrix composites lead to improved mechanical properties and tribological behaviors at first, but decreasing trends were observed after a certain addition level.
INTERNATIONAL JOURNAL OF METALCASTING
(2021)
Article
Materials Science, Multidisciplinary
Ting Zhang, Kuaishe Wang, Ke Qiao, Bing Wu, Qiang Liu, Peng Han, Wen Wang, Yuanyi Wang, Zhengyang Hao, Pengfei Zheng
Summary: In this study, QP980 steel and 6061 Al alloy are successfully welded by friction stir welding (FSW), and the microstructure and mechanical properties of joints are characterized. It is found that an IMC layer composed of Al3Fe, Al5Fe2, Al2Fe, and Al6Mn phases is generated at the weld interface. The interfacial bonding strength is enhanced by the low lattice mismatch between IMCs and matrix.
MATERIALS CHARACTERIZATION
(2023)
Article
Engineering, Electrical & Electronic
Lina Syazwana Kamaruzzaman, Yingxin Goh
Summary: The effects of Co addition as an alloying element on Sn-Bi solder were studied. It was found that Co can increase the melting temperature, improve microstructure, reduce the thickness of intermetallic compounds (IMCs), and enhance tensile properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
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
Nanoscience & Nanotechnology
Y. L. Wang, L. Zhao, D. Wan, S. Guan, K. C. Chan
Summary: Utilizing laser-engineered net shaping technology, near-fully dense high-entropy alloy (HEA) matrix composites reinforced with TiB2 nanoparticles were successfully fabricated, showing improved strength and superior wear resistance properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Weihua Hui, Liang Sun, Yong Zhou, Yimin Gao, Wenyan Zhai, Hui Dong, Yanming Liu, Qian Gao, Jianhong Peng
Summary: This article introduces the use of first principles calculation method to study the mechanical properties of four Mg-Ga intermetallic compounds, including thermodynamic properties, structural stability, electronic structure, elastic properties, and performance under pressure. The results show that Mg5Ga2 has the highest stiffness and plastic deformation resistance.
Article
Chemistry, Physical
Rui Zhu, Yupeng Li, Yumeng Sun, Jiacheng Feng, Wenbiao Gong
Summary: A Cu matrix surface composite material reinforced by FeCoNiCrAl high-entropy alloy particles was prepared by friction stir processing. The microstructure and properties of the composite were investigated. The results showed that the addition of high-entropy alloy particles and the friction stir processing contributed to the refinement of the Cu-matrix grains, resulting in improved wear resistance, ductility, and thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yuwei Yan, Guirong Li, Wenxiang Ren, Hongming Wang, Lipeng Gao
Summary: The FeCoNi1.5CrCu/2024Al composites fabricated by microwave sintering were hot rolled to study the effects of hot rolling reduction on microstructure, mechanical properties, and macroscopic crystal structure. The results showed that a reduction of 62.5% led to significant refinement of reinforced particle clusters and disappearance of large-size clusters. The distribution of reinforced particles in the matrix was homogeneous along the rolling direction, and the grain size of the matrix was significantly reduced. The relative density and microhardness of the composites increased first and then decreased with increasing reduction, reaching a maximum of 96.6% and 172.5 HV at 62.5%, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)