TY - GEN
T1 - Microstructures and phase formation of refractory monbtavzr high entropy alloy
AU - Wang, Haoyu
AU - Wang, Ziyue
AU - Nong, Zhisheng
AU - Wang, Jijie
AU - Man, Tiannan
AU - Zhu, Jingchuan
N1 - Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - Microstructures, component distribution and mechanical properties of a refractory high entropy alloy MoNbTaVZr were investigated by scanning electron microscope, X-ray diffractometer and universal testing machine, and the formation rule of second phases in as-cast alloy was discussed by the results of first principle calculations. The results showed that as-cast MoNbTaVZr alloy was composed of two solid solutions with body centered cubic structure, together with Mo2Zr and an unknown phase. The chemical compositions of dendritic regions were relatively uniform, while Zr and V elements were rich in interdendritic regions. There was a short yielding phase when as-cast alloy was operated by the compression. According to calculations, the C15 Mo2Zr Laves phase with the strongest formation ability and highest structural stability would be formed preferentially in MoNbTaVZr refractory high entropy alloy.
AB - Microstructures, component distribution and mechanical properties of a refractory high entropy alloy MoNbTaVZr were investigated by scanning electron microscope, X-ray diffractometer and universal testing machine, and the formation rule of second phases in as-cast alloy was discussed by the results of first principle calculations. The results showed that as-cast MoNbTaVZr alloy was composed of two solid solutions with body centered cubic structure, together with Mo2Zr and an unknown phase. The chemical compositions of dendritic regions were relatively uniform, while Zr and V elements were rich in interdendritic regions. There was a short yielding phase when as-cast alloy was operated by the compression. According to calculations, the C15 Mo2Zr Laves phase with the strongest formation ability and highest structural stability would be formed preferentially in MoNbTaVZr refractory high entropy alloy.
KW - First principles calculation
KW - Formation rule
KW - Microstructures
KW - MoNbTaVZr high entropy alloy
UR - https://www.scopus.com/pages/publications/85087179770
U2 - 10.4028/www.scientific.net/MSF.993.384
DO - 10.4028/www.scientific.net/MSF.993.384
M3 - 会议稿件
AN - SCOPUS:85087179770
SN - 9783035715668
T3 - Materials Science Forum
SP - 384
EP - 390
BT - Functional and Functionally Structured Materials IV
A2 - Han, Yafang
PB - Trans Tech Publications Ltd
T2 - 20th Chinese Materials Conference, CMC 2019
Y2 - 10 July 2019 through 14 July 2019
ER -