Working towards a modular, fully-coupled phase field fracture model integrating elasticity, plasticity, and damage
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Nataraj, Chiraag M.↗
Engineering topics
Nataraj, Chiraag M.
Publications and source records attributed to Nataraj, Chiraag M..
Working towards a modular, fully-coupled phase field fracture model integrating elasticity, plasticity, and damage
Explore the source record for details and available documents.
Nataraj, Chiraag M.↗
Temperature-Dependent Configurational Entropy Calculations for Refractory High-Entropy Alloys
The cluster expansion formalism for alloys is used to construct surrogate models for three refractory high-entropy alloys (NbTiVZr, HfNbTaTiZr, and AlHfNbTaTiZr). These cluster expansion models are then used along with Monte Carlo methods and thermodynamic integration to calculate the configurational entropy of these refractory high-entropy alloys as a function of temperature. Many solid solution alloy design guidelines are based on the ideal entropy of mixing, which increases monotonically with N , the number of elements in the alloy. However, our results show that at low temperatures, the configurational entropy of these materials is largely independent of N , and the assumption described above only holds in the high-temperature limit. This suggests that alloy design guidelines based on the ideal entropy of mixing require further examination.
36 MATERIALS SCIENCE↗