Re-investigation of phase equilibria in the system Al-Cu and structural analysis of the high-temperature phase η₁-Al_1-δCu.

ABSTRACT: The phase equilibria and reaction temperatures in the system Al-Cu were re-investigated by a combination of optical microscopy, powder X-ray diffraction (XRD) at ambient and elevated temperature, differential thermal analysis (DTA) and scanning electron microscopy (SEM). A full description of the phase diagram is given. The phase equilibria and invariant reactions in the Cu-poor part of the phase diagram could be confirmed. The Cu-rich part shows some differences in phase equilibria and invariant reactions compared to the known phase diagram. A two phase field was found between the high temperature phase η₁ and the low temperature phase η₂ thus indicating a first order transition. In the ζ₁/ζ₂ region of the phase diagram recent findings on the th

SUBMITTER: Ponweiser N 

PROVIDER: S-EPMC4825592 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature