Article ID Journal Published Year Pages File Type
1502482 Scripta Materialia 2006 4 Pages PDF
Abstract

The microhardness of Al–0.06 Sc–0.02 RE alloys (at.%, with RE (rare-earth) = Dy, Er, Gd, Sm, Y, or Yb) is measured as a function of aging time at 300 °C. As compared to Al–0.08 Sc, the ternary alloys exhibit: (i) the same incubation time, except for Al–0.06 Sc–0.02 Yb which hardens much faster; (ii) the same or reduced peak microhardnesses (which are higher than for Al–0.06 Sc); and (iii) the same over-aging behavior. All REs segregate to the core of Al3(Sc1−xREx) precipitates.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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