TY - JOUR
T1 - Orientation relationship between bcc precipitates and Ti5Si3 matrix in Mo–Si–B–Ti–C quinary alloys
AU - Hatakeyama, Tomotaka
AU - Sekido, Nobuaki
AU - Kimura, Yuta
AU - Yoshimi, Kyosuke
N1 - Funding Information:
This work was supported by the Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST) (No. JPMJAL1303 ).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/9
Y1 - 2020/9
N2 - In this study, the crystallographic orientation relationship between bcc precipitates and a Ti5Si3 matrix in Mo–50Ti–14Si–6C–6B (at.%) alloy was established. The alloy microstructure consisted of the bcc solid solution, Ti5Si3, Mo5SiB2, and TiC phases. The metal-rich Ti5Si3 phase was formed during a solidification stage, followed by the precipitation of the bcc phase within the Ti5Si3 matrix in the subsequent annealing process. The orientation relationship between the two phases was described by the expression: 112bcc//011‾0Ti5Si3 and 3‾11bcc//0001Ti5Si3. The formation of a low-energy interface between the two phases was explained by the edge-to-edge matching of their corresponding lattice planes at the faceted interface.
AB - In this study, the crystallographic orientation relationship between bcc precipitates and a Ti5Si3 matrix in Mo–50Ti–14Si–6C–6B (at.%) alloy was established. The alloy microstructure consisted of the bcc solid solution, Ti5Si3, Mo5SiB2, and TiC phases. The metal-rich Ti5Si3 phase was formed during a solidification stage, followed by the precipitation of the bcc phase within the Ti5Si3 matrix in the subsequent annealing process. The orientation relationship between the two phases was described by the expression: 112bcc//011‾0Ti5Si3 and 3‾11bcc//0001Ti5Si3. The formation of a low-energy interface between the two phases was explained by the edge-to-edge matching of their corresponding lattice planes at the faceted interface.
KW - Electron backscatter diffraction
KW - Electron microscopy, transmission
KW - Interfaces
KW - Intermetallics (aluminides, silicides)
KW - Microstructure
KW - Phase transformation (crystallographic aspects kinetics and mechanisms)
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U2 - 10.1016/j.intermet.2020.106863
DO - 10.1016/j.intermet.2020.106863
M3 - Article
AN - SCOPUS:85087155683
SN - 0966-9795
VL - 124
JO - Intermetallics
JF - Intermetallics
M1 - 106863
ER -