The Valence Electron Structure of High-Entropy Alloys

Article Preview

Abstract:

Empirical Electron Theory in Solids and Molecules (EET) was used to analyze the valence electron structure of ZrTiHfVNb, ZrTiHfVTa and ZrTiHfNbMo high-entropy alloys. The parameters characterizing the valence electron structure of high-entropy alloys were calculated, which were used to discuss the hardness and melting temperature of high-entropy alloys. The results show that the hardness of high-entropy alloys is positively correlated to the shared electron pair number in valence electron structure. The theoretical melting temperatures of high-entropy alloys were predicted by the parameters characterizing the valence electron structure.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

3-7

Citation:

Online since:

January 2017

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2017 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] J. Yeh, S. Chen et al, Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes, J. Adv. Eng. Mater, 6 (2004)299-303.

DOI: 10.1002/adem.200300567

Google Scholar

[2] Chen Min, Liu Yuan et al, Microstructure and mechanical properties of AlTiFeNiCuCrx high-entropy alloy with multi-principal elements, J. Acta Metallurgica Sinica, 43(2007)1020-1024.

Google Scholar

[3] R H Yu, Empirical Electronic theory of solids and molecules, Chin. Sci. Bull, 23(1978)217-224.

Google Scholar

[4] R L Zhang, Empirical Electronic theory of solids and molecules, Jiling Science and Technology Pulishing House, (1993).

Google Scholar

[5] JianBin Guo, YunKai Li, Study on microstructure and mechanical properties of five-element refractory high entropy alloys, D. Beijing Institute of Technology, (2015).

Google Scholar

[6] ZhiLin Liu, Interface Electron Structures and interfacial properties, Beijing Science and Technology Pulishing House, (2002).

Google Scholar

[7] W D Xu, R L Zhang, R H Yu, Calculation of the transition metal compound crystal binding energy, J. Sci Chin, 3(1988)323-330.

Google Scholar

[8] Cheng Lin, Guili Yin, Calculation of the cohesive energy of solids with the use of valence electron structure parameters, J. Computational Materials Science, 101(2015)168-174.

DOI: 10.1016/j.commatsci.2015.01.026

Google Scholar

[9] Otto. F, Yang. Y, Bei. H, GeorgeE. P, Relative effects of enthalpy and entropy on the phase stability of equiatomic high-entropy alloys, J. Acta Materialia, 61(2013)2628-2638.

DOI: 10.1016/j.actamat.2013.01.042

Google Scholar

[10] Yong Zhang, Yunjun Zhou et al, Solid-Solution Phase Formation Rules for Multi-component Alloys, J. Adv. Eng. Mater, 10(2008)534-538.

DOI: 10.1002/adem.200700240

Google Scholar

[11] D. J. M. King, S. C. Middleburgh, Predicting the formation and stability of single phase high-entropy alloys, J. Acta Materialia, 104(2016)172-179.

DOI: 10.1016/j.actamat.2015.11.040

Google Scholar