Enhanced Mechanical Properties of Ti(C,B)-Based Cermets with Multi-Component AlCoCrFeNi High-Entropy Alloys Binder

Gang Zhu; Shao Xia Sun; Jia Lin Chen; Ming Xie; Jie Qiong Hu

doi:10.4028/www.scientific.net/KEM.727.149

Paper Titles

Improved Mechanical Properties of AZ31 Alloy Fabricated by Multi-Directional Forging
p.124

Preparation of a Light-Weight MgCaAlLiCu High-Entropy Alloy
p.132

Microstructure and Mechanical Properties of Ti-Nb-Zr Alloys Prepared by Spark Plasma Sintering
p.136

Numerical Simulation of Stress Distribution of AZ31B Magnesium Alloy/LY12 Aluminum Alloy Diffusion Welded Joint
p.143

Enhanced Mechanical Properties of Ti(C,B)-Based Cermets with Multi-Component AlCoCrFeNi High-Entropy Alloys Binder
p.149

Modeling the Hot Deformation Behavior of Ti-50.8%Ni Shape Memory Alloy
p.154

Simulation of the Effect of Second Phase Particles in Different Shapes on Grain Growth of Mg Alloy by Phase Field Methods
p.159

Effect of Heat Treatment on the Microstructure of Cu-Cr-Zr Alloy
p.166

Investigation of Microstructure and Deformation Behavior of a Mg-Gd-Y Alloy Processed by ECAP and Aging Treatment
p.171

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Enhanced Mechanical Properties of Ti(C,B)-Based Cermets with Multi-Component AlCoCrFeNi High-Entropy Alloys Binder

Abstract:

In this study, Ti (C,N)-based cermets with multi-component AlCoCrFeNi high-entropy alloys binder were successfully fabricated by mechanical alloying and low pressure sintering. The results indicate that the introduction of AlCoCrFeNi HEAs binder extended the formation process of (W,M)C rim phase by WC diffusion-solution mechanism, and repressed the precipitation process of the outer rim phase. On the other hand, the TEM micro-area analysis revealed a lath modulated structure, which massive nanoparticles are precipitated in the spinodal plate zone, 3-20nm in diameter. The nanocrystalline dispersion would provide an effective precipitation strengthening effect. The results of mechanical properties revealed that the cermets with AlCoCrFeNi HEAs binder achieved the co-enhancement of hardness and toughness. The novel material exhibits a high Vickers hardness of 1787 MPa, along with a good fracture toughness value of 11.4 MPa m^1/2.