TY - JOUR
T1 - Solidification pathways and phase equilibria in the Mo-Ti-C ternary system
AU - Ida, Shuntaro
AU - Sekido, Nobuaki
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 Shuntaro Ida et al., published by De Gruyter 2020.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - The liquidus surface projection and isothermal section at 1,800°C in the Mo-Ti-C ternary system are examined using arc-melted alloys. A ternary transition peritectic reaction (L + Mo2C → Mo + TiC) takes place during solidification, which is apparently different from the ternary eutectic reaction (L → Mo + TiC + Mo2C) observed in a previous report. Since the composition of the eutectic reaction (L → Mo + TiC) shifts toward the Mo-Ti binary line with increasing Ti concentration, the volume fraction of the Mo phase and the interlamellar spacing of the Mo and TiC phases increase in the eutectic microstructure. At 1,800°C, the TiC phase in equilibrium with the Mo phase can contain more than 28 at% Mo and a Mo/TiC/Mo2C three-phase region exists at around Mo-15Ti-10C.
AB - The liquidus surface projection and isothermal section at 1,800°C in the Mo-Ti-C ternary system are examined using arc-melted alloys. A ternary transition peritectic reaction (L + Mo2C → Mo + TiC) takes place during solidification, which is apparently different from the ternary eutectic reaction (L → Mo + TiC + Mo2C) observed in a previous report. Since the composition of the eutectic reaction (L → Mo + TiC) shifts toward the Mo-Ti binary line with increasing Ti concentration, the volume fraction of the Mo phase and the interlamellar spacing of the Mo and TiC phases increase in the eutectic microstructure. At 1,800°C, the TiC phase in equilibrium with the Mo phase can contain more than 28 at% Mo and a Mo/TiC/Mo2C three-phase region exists at around Mo-15Ti-10C.
KW - Mo-Ti-C ternary system
KW - phase equilibria
KW - solidification
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U2 - 10.1515/htmp-2020-0053
DO - 10.1515/htmp-2020-0053
M3 - Article
AN - SCOPUS:85086838874
SN - 0334-6455
VL - 39
SP - 164
EP - 170
JO - High Temperature Materials and Processes
JF - High Temperature Materials and Processes
IS - 1
ER -