1. Research on Properties of Borocarbide in High Boron Multi-Component Alloy with Different Mo Concentrations.
- Author
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Ren, Xiangyi, Han, Lihong, Fu, Hanguang, and Wang, Jianjun
- Subjects
BORON steel ,ELASTIC constants ,ALLOYS ,ELECTRON density ,BORON ,BOND strengths ,DENSITY of states ,MOLYBDENUM - Abstract
In this work, the microstructure, alloying element distribution, and borocarbide mechanical properties of high-boron multi-component alloy with Fe-2.0 wt.%B-0.4 wt.%C-6.0 wt.%Cr-x wt.%Mo-1.0%Al-1.0 wt.%Si-1.0 wt.%V-0.5 wt.%Mn (x = 0.0, 2.0, 4.0, 6.0, 8.0) are investigated. The theoretical calculation results and experiments indicate that the microstructure of high-boron multi-component alloy consists of ferrite, pearlite as a matrix and borocarbide as a hard phase. As a creative consideration, through the use of first-principles calculations, the comprehensive properties of borocarbide with different molybdenum concentrations have been predicted. The calculations of energy, state density, electron density and elastic constant of Fe
2 B crystal cell reveal that substitution of the molybdenum atom in the Fe2 B crystal cell can remarkably improve its thermodynamic stability, bond strength, and covalent trend. For verifying the accuracy of this theoretical calculation, nano-indentation testing is carried out, the results of which indicate that the actual properties of borocarbide present favorable consistency with the theoretical calculations. [ABSTRACT FROM AUTHOR]- Published
- 2021
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