Compositional Dependence of Phase Selection in CoCrCu0.1FeMoNi-Based High-Entropy Alloys.
作者： Ning Liu , Chen Chen , Isaac Chang , Pengjie Zhou , Xiaojing Wang
DOI: 10.3390/MA11081290
关键词: Intermetallic 、 Electronegativity 、 Valence electron 、 Analytical chemistry 、 Materials science 、 Solid solution 、 High entropy alloys 、 Atomic radius 、 Eutectic system 、 Cubic crystal system
摘要: To study the effect of alloy composition on phase selection in CoCrCu0.1FeMoNi high-entropy (HEA), Mo was partially replaced by Co, Cr, Fe, and Ni. The microstructures behaviors HEA system were investigated. Dendritic, inter-dendritic, eutectic observed as-solidified HEAs. A simple face centered cubic (FCC) single-phase solid solution obtained when molar ratio Ni increased to 1.7 at expense Mo, indicating that stabilized FCC structure. structure favored atomic radius δ ≤ 2.8, valence electron concentration (VEC) ≥ 8.27, mixing entropy ΔS 13.037, local lattice distortion parameter α2 0.0051, ΔS/δ2 > 1.7. Mixed + body (BCC) structures occurred for 4.1 4.3 7.71 VEC 7.86; or/and BCC intermetallic (IM) mixtures 2.8 or 7.39 < 8.27. IM is electronegativity differences greater than 0.133. However, ΔS, α2, inefficient identifying (FCC IM)/(FCC BCC) transition. Moreover, enthalpy cannot predict this system.
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Zhijun Wang, Weifeng Qiu, Yong Yang, C.T. Liu, Atomic-size and lattice-distortion effects in newly developed high-entropy alloys with multiple principal elements Intermetallics. ,vol. 64, pp. 63- 69 ,(2015) , 10.1016/J.INTERMET.2015.04.014
Z.P. Lu, H. Wang, M.W. Chen, I. Baker, J.W. Yeh, C.T. Liu, T.G. Nieh, An assessment on the future development of high-entropy alloys: Summary from a recent workshop Intermetallics. ,vol. 66, pp. 67- 76 ,(2015) , 10.1016/J.INTERMET.2015.06.021
Feng He, Zhijun Wang, Man Zhu, Junjie Li, Yingying Dang, Jincheng Wang, The phase stability of Ni2CrFeMox multi-principal-component alloys with medium configurational entropy Materials & Design. ,vol. 85, pp. 1- 6 ,(2015) , 10.1016/J.MATDES.2015.06.174
L Jiang, ZQ Cao, JC Jie, JJ Zhang, YP Lu, TM Wang, TJ Li, None, Effect of Mo and Ni elements on microstructure evolution and mechanical properties of the CoFeNixVMoy high entropy alloys Journal of Alloys and Compounds. ,vol. 649, pp. 585- 590 ,(2015) , 10.1016/J.JALLCOM.2015.07.185
P.H. Wu, N. Liu, W. Yang, Z.X. Zhu, Y.P. Lu, X.J. Wang, Microstructure and solidification behavior of multicomponent CoCrCuxFeMoNi high-entropy alloys Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 642, pp. 142- 149 ,(2015) , 10.1016/J.MSEA.2015.06.061
Chin-You Hsu, Woei-Ren Wang, Wei-Yeh Tang, Swe-Kai Chen, Jien-Wei Yeh, Microstructure and Mechanical Properties of New AlCoxCrFeMo0.5Ni High-Entropy Alloys Advanced Engineering Materials. ,vol. 12, pp. 44- 49 ,(2010) , 10.1002/ADEM.200900171
Feng He, Zhijun Wang, Peng Cheng, Qiang Wang, Junjie Li, Yingying Dang, Jincheng Wang, C.T. Liu, Designing eutectic high entropy alloys of CoCrFeNiNb x Journal of Alloys and Compounds. ,vol. 656, pp. 284- 289 ,(2016) , 10.1016/J.JALLCOM.2015.09.153
Sheng GUO, C.T. LIU, Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase Progress in Natural Science: Materials International. ,vol. 21, pp. 433- 446 ,(2011) , 10.1016/S1002-0071(12)60080-X
B. Cantor, I.T.H. Chang, P. Knight, A.J.B. Vincent, Microstructural development in equiatomic multicomponent alloys Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 375, pp. 213- 218 ,(2004) , 10.1016/J.MSEA.2003.10.257
Sheng Guo, Chun Ng, C.T. Liu, Anomalous solidification microstructures in Co-free AlxCrCuFeNi2 high-entropy alloys Journal of Alloys and Compounds. ,vol. 557, pp. 77- 81 ,(2013) , 10.1016/J.JALLCOM.2013.01.007