학술논문
Investigation of the Phase Relations in the Al-Rich Alloys of the Al-Sc-Hf System in Solid State.
Document Type
Article
Source
Subject
*ALUMINUM alloys
*PHASE diagrams
*SOLID solutions
*TERNARY phase diagrams
*SCANNING electron microscopy
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Language
ISSN
1547-7037
Abstract
Using electrical resistivity measurements, optical microscopy, and scanning electron microscopy (SEM) with energy dispersive x-ray analysis (EDS), the combined solubility of Sc and Hf in solid Al and the phases in equilibrium with Al solid solution at 600, 500, and 400 °C were studied. The investigation indicated the progressive decrease of the total solubility of Sc and Hf in solid Al with increasing Sc/Hf ratio in the alloys and decreasing temperature. ScAl3 and HfAl3 were observed in equilibrium with Al without formation of a continuous solid solution between them. Based on the established extension of the Al solid solution and also extensions of the ScAl3 + (Al) and HfAl3 + (Al) phase fields, the partial isothermal section of the Al-Sc-Hf phase diagram at 600 °C was constructed. [ABSTRACT FROM AUTHOR]