|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Design of Light-weight High-Entropy Alloys
||Rui Feng, Michael C. Gao, Chanho Lee, Michael Mathes , Tingting Zuo, Shuying Chen, Jeffrey A. Hawk, Yong Zhang, Peter K. Liaw
|On-Site Speaker (Planned)
Owing to the demand from transportation and defense industries, light-weight high-entropy alloys (HEAs) have garnered widespread interest from scientists for the use as potential structural materials. Great efforts have been made to study the phase-formation rules of HEAs to accelerate the discovery process. Many proposed solid-solution phase-formation rules are assessed, based on a series of light-weight HEAs. The results indicate that these empirical rules work for most compositions but also fail for several alloys. Light-weight HEAs often involve the additions of Al and/or Ti in great amounts, resulting in large negative enthalpies for forming solid-solution phases and/or intermetallics. Accordingly, these empirical rules need to be modified with the new experimental data. In contrast, CALPHAD is demonstrated to be an effective approach to predict the phase formation in HEAs as a function of composition and temperature. Future perspectives on the design of light-weight HEAs are discussed in light of CALPHAD modeling.
||Planned: Supplemental Proceedings volume