PHASE DIAGRAM OF Nd-Fe-B TERNARY SYSTEM——Ⅱ.Two Vertical Sections with Constant Nd and B Respectively,Passing Through Nd_2Fe_(14) B Point

According to the experimental data of phase transition taken from DTA, metallography,SEM and microzone composition, two vertical sections of the ternary phase diagram (B=5.88at.-%, Nd≤45.41 at.-% andNd_2Fe_(14)BNd_(1.1)Fe_4B_4 , B≤44.56 at.-%) have been drawn indetail. It is verified that the crystallization of both Nd_2Fe_(14)B and Nd_(1.1)Fe_4B_4 phase, duringcooling from melt, would take peritectic reaction instead of solid-liquid congruent precipita-tion.