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On single-phase status and segregation of an as-solidified septenary refractory high entropy alloy

Published online by Cambridge University Press:  06 February 2017

Boliang Zhang ,
Yang Mu ,
M.C. Gao ,
W.J. Meng  and
S.M. Guo
Boliang Zhang
Affiliation:
Louisiana State University, Baton Rouge, LA 70803, USA
Yang Mu
Affiliation:
Louisiana State University, Baton Rouge, LA 70803, USA
M.C. Gao
Affiliation:
National Energy Technology Laboratory & AECOM Corporation, Albany, OR 97321, USA
W.J. Meng
Affiliation:
Louisiana State University, Baton Rouge, LA 70803, USA
S.M. Guo*
Affiliation:
Louisiana State University, Baton Rouge, LA 70803, USA
*
Address all correspondences to S.M. Guo at [email protected]
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Abstract

Phase predictions and characterizations on as-solidified septenary refractory high-entropy alloy, CrMoNbReTaVW, are presented. The simulated solidification process predicts a single body-centered-cubic (BCC) crystal structure with the tendency of compositional segregation. X-ray diffraction results confirm the “single-phase-like” BCC structure, while further experimental characterizations reveal the existence of multiple grains with significantly different compositions yet the same crystal structure and similar lattice parameters.

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 1 , March 2017 , pp. 78 - 83
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Copyright
Copyright © Materials Research Society 2017 

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