“…The phase diagram in the Al-Th system has been investigated by many researchers [14][15][16][17][18][19]. Murray [17] studied the phase diagram in the Al-Th system by thermal analysis, X-ray diffraction and metallographic methods, and found that the Th 2 Al, Th 3 Al 2 and ThAl 2 compounds are directly formed from the liquid phase, while the ThAl, Th 2 Al 3 and ThAl 3 compounds are formed by the peritectic reactions (Th 2 Al 3 + L M ThAl, L + ThAl 2 M Th 2 Al 3 or L + ThAl 2 M ThAl 3 ).…”