[G] Heat Resistance Materials

12:15 PM - 12:30 PM JST(3:15 AM - 3:30 AM UTC)

[48] Temperature dependence of the effect of Ti on the phase stability of Nb₃Si

○Kanta Suetake¹, Hashimoto Kazuki¹, Ikeda Ken-ichi², Miura Seiji² (1. Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido Univ., 2. Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido Univ.)

Keywords:

Nb-Si alloy,Eutectoid decomposition,Eutectic solidification,Silicide,Temperature dependence of the phase stability

Nb–Si alloys are promising heat-resistant materials for gas turbines. Toughness improvement requires heat-treatment-induced eutectoid decomposition of Nb₃Si into ductile BCC-Nb and strengthening Nb₅Si₃. This study investigated the effect of Ti addition on this decomposition behavior.