On the Solid Solution Strengthening in Crmonbtiw Refractory High Entropy Alloy

Autor: S. V. S. Narayana Murty, Lavanya Raman, B.S. Murty, Christopher C. Berndt, Ravi Sankar Kottada, Daniel Fabijanic, Ameey Anupam, G. Karthick, Andrew Siao Ming Ang
Rok vydání: 2020
Předmět:
Zdroj: SSRN Electronic Journal.
ISSN: 1556-5068
DOI: 10.2139/ssrn.3718103
Popis: We have tried to understand the yield behavior of as-cast CrMoNbTiW refractory high entropy alloy using a modified Varvenne solid solution strengthening model. Yield strength (YS) showed a strong temperature dependence in the 1100 – 1300 °C temperature range. The predicted YS values are significantly affected by the temperature-dependent material constants. The absolute value of YS depends on shear modulus, whereas the variation of YS with temperature is affected by the Poisson’s ratio. Our study demonstrates that it is feasible to predict the high-temperature YS using elastic constants from literature besides DFT studies.
Databáze: OpenAIRE