4.7 Article

Microstructure and properties of FeCoNiCrMn and Al2O3 hybrid particle-reinforced aluminum matrix composites fabricated by microwave sintering

Journal

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 24, Issue -, Pages 8618-8634

Publisher

ELSEVIER
DOI: 10.1016/j.jmrt.2023.05.100

Keywords

Aluminum matrix composite; Hybrid reinforced; High entropy alloy; Cross -scale; Mechanical properties

Ask authors/readers for more resources

This study investigated the effects of different weight fractions of Al2O3 micro/nanoparticles on the microstructure, mechanical properties, and strengthening mechanisms of dual-phase-reinforced AMCs. The hybrid particles of HEA and Al2O3 synergistically delayed interfacial crack propagation and resulted in significantly improved hardness, yield strength, and compressive strength compared to single HEA-reinforced samples. Orowan strengthening, dislocation strengthening, and thermal mismatch strengthening were identified as the main strengthening mechanisms in the composites.
In this paper, multiscale Al2O3 micro/nanoparticles (0-14 wt%) mixed with FeCoNiCrMn high-entropy alloy (HEA) particles (15 wt%) were used as reinforcements to prepare dualphase-reinforced aluminum matrix composites (AMCs) through microwave sintering. The strengthening effects of doping different weight fractions of Al2O3 micro/nanoparticles on the microstructure, mechanical properties, and strengthening mechanisms of the mixedphase particle-reinforced AMCs were investigated. The performance after 11 wt% Al2O3+HEA microparticles was similar to that obtained by adding 2 wt% and 5 wt% Al2O3+HEA nanoparticles. The hardness, yield strength, and compressive strength of the 2 wt% nanoAl2O3 composite were 109.7 HV, 286.5 MPa, and 506.7 MPa, respectively, which were 70.9%, 98.5%, and 94.7% higher than those of the single HEA-reinforced sample. In terms of the strengthening and toughening mechanisms, Orowan strengthening, dislocation strengthening, and thermal mismatch strengthening were the main strengthening mechanisms of particles species mixed in the metal matrix composites. Hall-Petch strengthening and loadtransfer effects were mainly attributed to the cross-scale mixing of particles. The hybrid particles of HEA and Al2O3 synergistically delayed interfacial crack propagation. This study provides a new preparation method for high-performance metal matrix composites.& COPY; 2023 The Author(s). Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Materials Science, Multidisciplinary

Influence of Y-Rich Compounds on High-Cycle Fatigue Performance of Y-Doped M951 Superalloy

Pengjie Zhou, Dehang Song, Ning Liu, Nobufumi Ueshima, Katsunari Oikawa

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2019)

Article Instruments & Instrumentation

Effect of Ni on Microstructure and Mechanical Property of a Co-Ti-V-Based Superalloy

Pengjie Zhou, Xinkang Gao, Dehang Song, Yinbing Liu, Jun Cheng

Summary: The presence of Ni in the Co-8Ti-11V-xNi alloys leads to a decrease in lattice misfit and changes in the size and elemental partition behavior of the gamma ' phase. Differential scanning calorimetry (DSC) was used to determine the solvus temperatures of the gamma ' phase in the different alloy compositions. Additionally, the mechanical properties, such as yield strength and ultimate strength, were found to be influenced by the Ni content, with the Co-8Ti-11V-10Ni alloy exhibiting the highest strength values.

SCANNING (2021)

Article Chemistry, Physical

Effects of aging treatment on microstructure and mechanical properties of non-equiatomic high entropy alloy

Z. C. Zhou, G. R. Li, H. M. Wang, P. J. Zhou, K. Dong, Y. M. Wei, Z. B. Zhang, C. Dong, W. X. Su, H. Zhao

Summary: In this study, the effects of aging treatment on the microstructure and mechanical properties of cryogenically-processed FeCoNi1.5CuB0.5Y0.2 HEAs were investigated. The results showed that increasing the aging temperature, extending the aging time, or increasing the number of aging cycles significantly improved the overall mechanical properties of the material. The optimized aging parameters resulted in a reduction in grain size, the formation of finely dispersed precipitates, and enhanced strength-ductility synergy.

INTERMETALLICS (2023)

Article Chemistry, Physical

A self-supporting P-doped CNT@MnCo2O4/Co3O4 electrode with ion and electron-conductive hierarchical structure for high performance supercapacitor

Yu Liu, Xiumei Chen, Huachen Lin, Pengjie Zhou, Yulong Ying

Summary: Phosphorus doping is an important method to enhance the electrochemical performance of metal oxide electrodes. In this study, a P-doped carbon nanotubes (CNT)@MnCo2O4/Co3O4 film was successfully synthesized. The introduction of P heteroatoms effectively modulated the electronic structure of MnCo2O4/Co3O4, improving the electrical conductivity and increasing Faraday reaction. The capacity and rate performance of CNT@MnCo2O4/Co3O4 were significantly improved after phosphorus doping.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Chemistry, Physical

Nitrogen-doped graphene quantum dots embedding CuCo-LDH hierarchical hollow structure for boosted charge storage capability in supercapacitor

Xiaojie Xu, Dongbo Xu, Jinrui Ding, Pengjie Zhou, Yulong Ying, Yu Liu

Summary: Nitrogen-doped graphene quantum dots embedded in CuCo-LDH hierarchical hollow structure were synthesized to optimize the nanostructure of layered double hydroxide and alleviate agglomeration issues. The ordered multi-component structure effectively prevented aggregation and improved electron and ion transfer. The addition of nitrogen-doped graphene quantum dots further enhanced electron transmission rate and energy storage capacity, resulting in a specific capacity of 1009 F g-1 at 1 A g-1 and an energy density of 58.6 Wh kg-1 at 850 W kg-1 for the assembled CC@CuCo-LDH/NGQDs//AC device. These results demonstrate the effectiveness of the hierarchical structure and electrical conductivity in enhancing the electrochemical characteristics of asymmetric supercapacitors.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

Article Materials Science, Multidisciplinary

Oxidation behavior of Al15Fe20Co20Ni20Cr25-xNbx high-entropy alloys at elevated temperatures

Ning Liu, Yannan Gao, Chen Chen, Pengjie Zhou, Xiaojing Wang, Jing Zhang, Jing Cao

Summary: In this study, dual-phase solid solution structures with disordered and ordered FCC and BCC were achieved in Al15Fe20Co20Ni20Cr25-xNbx (x = 1, 1.5, 2, at.%) HEAs. The addition of Nb enhanced the strength of Al15Fe20Co20Ni20Cr25-xNbx HEAs and achieved a good balance between strength and strain. The Nb-containing alloys exhibited excellent oxidation resistance at temperatures of 750-1000 degrees C. The substitution of Cr by Nb improved the oxidation resistance without significantly affecting the mechanical properties, making Al15Fe20Co20Ni20Cr25-xNbx HEAs promising candidates for multi-component superalloys.

VACUUM (2023)

No Data Available