The ScNi system

The ScNi system was reinvestigated because of the need of more accurate data for the study of the phase equilibria of the ScTiNi ternary system. ScNi alloys melted from the components were characterized using X-ray, metallographic, differential thermal and electron microprobe analyses. In contra...

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Bibliographic Details
Published in:Journal of alloys and compounds 1997-11, Vol.262, p.258-262
Main Authors: Semenova, E.L., Rusetskaya, N.Yu
Format: Article
Language:English
Subjects:
Alloys
Nickel
Phase Equilibria
Scandium
System
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Summary:The ScNi system was reinvestigated because of the need of more accurate data for the study of the phase equilibria of the ScTiNi ternary system. ScNi alloys melted from the components were characterized using X-ray, metallographic, differential thermal and electron microprobe analyses. In contrast to the former diagram of the ScNi system, the Sc 2Ni phase is formed by the peritectical reaction L + δ ⇄ η at 990°C. It was found that the transformation in the scandium-based alloys occurs via the metatectic reaction β ⇄ L + α (where α is the hpc and β the bcc modification of scandium) at 950°C. The eutectic reaction, L ⇄ Sc 2Ni + α Sc , takes place at 840°C. As a result of the study of the ScNi system the binary phase diagram was constructed.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(97)00467-2