Design of high entropy alloys: A single-parameter thermodynamic rule

Assuming random mixing of atoms, design of high entropy alloys (HEAs) was used to follow a simple route by maximizing their configurational entropy of mixing. Here we propose a single-parameter design paradigm taking into account formation enthalpy and the excessive entropy of mixing, which arises from dense atomic packing and atomic size misfit. The proposed paradigm is verified using the data hitherto reported and proven to be a physically accepted thermodynamic parameter for the design of HEAs.

[1]  H. Bakker,et al.  Enthalpies in Alloys: Miedema's Semi-Empirical Model , 1998 .

[2]  P. Liaw,et al.  Refractory high-entropy alloys , 2010 .

[3]  Sheng Guo,et al.  Entropy-driven phase stability and slow diffusion kinetics in an Al0.5CoCrCuFeNi high entropy alloy , 2012 .

[4]  Yong Zhang,et al.  Prediction of high-entropy stabilized solid-solution in multi-component alloys , 2012 .

[5]  K. Dahmen,et al.  Microstructures and properties of high-entropy alloys , 2014 .

[6]  T. Nieh,et al.  Effects of Al addition on structural evolution and tensile properties of the FeCoNiCrMn high-entropy alloy system , 2014 .

[7]  Wei Zhang,et al.  Entropies in Alloy Design for High-Entropy and Bulk Glassy Alloys , 2013, Entropy.

[8]  Yunhao Huang,et al.  Atomic-size effect and solid solubility of multicomponent alloys , 2015 .

[9]  Jicheng He,et al.  Effect of annealing treatment on microstructures and mechanical properties of FeCoNiCuAl high entropy alloys , 2013 .

[10]  P. Guan,et al.  Stress-temperature scaling for steady-state flow in metallic glasses. , 2010, Physical review letters.

[11]  Daniel S Fisher,et al.  Jamming percolation and glass transitions in lattice models. , 2005, Physical review letters.

[12]  C. Liu,et al.  More than entropy in high-entropy alloys: Forming solid solutions or amorphous phase , 2013 .

[13]  C. Liu,et al.  Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase , 2011 .

[14]  A. Takeuchi,et al.  Pd20Pt20Cu20Ni20P20 high-entropy alloy as a bulk metallic glass in the centimeter , 2011 .

[15]  B. Cantor,et al.  Microstructural development in equiatomic multicomponent alloys , 2004 .

[16]  Akira Takeuchi,et al.  Calculations of mixing enthalpy and mismatch entropy for ternary amorphous alloys : Special issue on bulk amorphous, nano-crystalline and nano-quasicrystalline alloys , 2000 .

[17]  Gary S Grest,et al.  Analogies between granular jamming and the liquid-glass transition. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[18]  Arthur C. Gossard,et al.  Understanding Materials Science: History, Properties, Applications , 1999 .

[19]  T. Shun,et al.  Nanostructured High‐Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes , 2004 .

[20]  Wei Zhang,et al.  High-Entropy Alloys with a Hexagonal Close-Packed Structure Designed by Equi-Atomic Alloy Strategy and Binary Phase Diagrams , 2014 .

[21]  L. Angelani,et al.  Configurational entropy of hard spheres , 2005, cond-mat/0506447.

[22]  Akira Takeuchi,et al.  Quantitative evaluation of critical cooling rate for metallic glasses , 2001 .

[23]  Jian Lu,et al.  The generalized thermodynamic rule for phase selection in multicomponent alloys , 2015 .

[24]  K. E. Starling,et al.  Equilibrium Thermodynamic Properties of the Mixture of Hard Spheres , 1971 .

[25]  Jian Lu,et al.  Phase stability and tensile properties of Co-free Al0.5CrCuFeNi2 high-entropy alloys , 2014 .