Acta Metallurgica Sinica (English Letters) ›› 1989, Vol. 2 ›› Issue (11): 333-338.

• Research paper • Previous Articles     Next Articles

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

ZHANG Ning, Central Iron and Steel Research Institute, Ministry of Metallurgical Industry, Beijing, ChinaLUO Yang, San Huan New Material Research and Development Center, Academia Sinica, Beijing, China   

  • Received:1989-11-11 Revised:1989-11-11 Online:1989-11-11 Published:2009-10-10

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Abstract: 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=5.88 at.-%, Nd≤45.41 at.-% andNd_2Fe_(14)BNd_(1.1)Fe_4B_4 , B≤44.56 at.-%) have been drawn in detail. It is verified that the crystallization of both Nd_2Fe_(14)B and Nd_(1.1)Fe_4B_4 phase, during cooling from melt, would take peritectic reaction instead of solid-liquid congruent precipita- tion.

Key words: Nd-Fe-B phase diagram, vertical section

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