What is it about?
The paper disclosed that more constitute elements make the alloy with lower modulus, this is because the entropy contribution to the modulus usually is negative, and a parameter of entropy of mixing over the nethalpy of mixing is proposed to evaluate the entropy of the alloys.
Featured Image
Why is it important?
The phase change of the TixCoCrFeNiCu1−yAly HEAs is closely related to the atomic packing efficiency (APE) of the phases. The definition of the high entropy of the solid solution alloys should be compared with the enthalpy of mixing, and = 1000 Smix / Hmix 1 is proposed as the criteria for the HEAs.
Perspectives
The mixing of Ti and Al is usually forming ordered intermetallics, it is brittle at room temperature, the addition with the transit metals, such as , Fe, Co，Ni, and Cu, which will play as a buffer, reduce the strong attractive interraction between the Ti and Al, atoms.
Dr. Yong A Zhang
University of Science and Technology Beijing
Read the Original
This page is a summary of: Phase Change and Mechanical Behaviors of TixCoCrFeNiCu1−yAly High Entropy Alloys, Journal of ASTM International, January 2010, ASTM International,
DOI: 10.1520/jai102527.
You can read the full text:
Contributors
The following have contributed to this page
