TY - JOUR
T1 - Revisiting the Phase Stability in Ni-X (X=Mo, Ti, In) Systems Using Ab Initio Calculations
AU - Jiang, Chao
AU - Liu, Zi Kui
N1 - Funding Information:
Acknowledgments DFT calculations are performed using the FALCON supercomputer at Idaho National Laboratory. ZKL is partially supported by the U.S. National Science Foundation Center for Computational Materials Design (Grant No. IIP-1034965).
Funding Information:
DFT calculations are performed using the FALCON supercomputer at Idaho National Laboratory. ZKL is partially supported by the U.S. National Science Foundation Center for Computational Materials Design (Grant No. IIP-1034965). This invited article is part of a special issue of the Journal of Phase Equilibria and Diffusion in honor of Prof. Zhanpeng Jin?s 80th birthday. The special issue was organized by Prof. Ji-Cheng (JC) Zhao, The Ohio State University; Dr. Qing Chen, Thermo-Calc Software AB; and Prof. Yong Du, Central South University.
Publisher Copyright:
© 2018, ASM International.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - In this paper, we report a theoretical prediction of the low-temperature phase diagrams for the Ni-Mo, Ni-Ti and Ni-In binary systems using ab initio evolutionary methodology. Our study uncovers two previously unreported intermetallic compounds that are thermodynamically stable at low temperatures: orthorhombic Ni2Mo with Cmcm symmetry and tetragonal NiTi2 with I4/mmm symmetry. Ni2Mo and NiTi2 will transform from their zero temperature ground state structures into their experimentally observed high temperature polymorphs above a critical temperature of 466 and 912 K, respectively. Finally, our DFT calculations with both PBE and LDA functional indicate that the experimentally observed Ni3In, Ni2In and Ni13In9 structures are all not stable at low temperature. Furthermore, no Ni3In and Ni2In structures that are stable at T = 0 K can be identified by our evolutionary search.
AB - In this paper, we report a theoretical prediction of the low-temperature phase diagrams for the Ni-Mo, Ni-Ti and Ni-In binary systems using ab initio evolutionary methodology. Our study uncovers two previously unreported intermetallic compounds that are thermodynamically stable at low temperatures: orthorhombic Ni2Mo with Cmcm symmetry and tetragonal NiTi2 with I4/mmm symmetry. Ni2Mo and NiTi2 will transform from their zero temperature ground state structures into their experimentally observed high temperature polymorphs above a critical temperature of 466 and 912 K, respectively. Finally, our DFT calculations with both PBE and LDA functional indicate that the experimentally observed Ni3In, Ni2In and Ni13In9 structures are all not stable at low temperature. Furthermore, no Ni3In and Ni2In structures that are stable at T = 0 K can be identified by our evolutionary search.
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U2 - 10.1007/s11669-018-0646-z
DO - 10.1007/s11669-018-0646-z
M3 - Article
AN - SCOPUS:85048460669
VL - 39
SP - 584
EP - 591
JO - Bulletin of Alloy Phase Diagrams
JF - Bulletin of Alloy Phase Diagrams
SN - 1547-7037
IS - 5
ER -