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Karnesky, Richard A.; van Dalen, Marsha E.; Dunand, David C.; Seidman, David N. |
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Publication |
Effects of Substituting Rare-Earth Elements for Scandium in a Precipitation-Strengthened Al 0.08 at.% Sc Alloy |
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Journal Article |
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2006 |
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Abstract |
Scripta Materialia |
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Corporate Author |
Scripta Mater. |
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55 |
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5 |
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Summary Language |
437-440 |
Series Editor |
Aluminum alloys; Scandium; Rare-earth elements; Lanthanides, Precipitation strengthening; Local-Electrode Atom-Probe tomography; LEAP; Al-Sc |
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Abbreviated Series Title |
The microhardness of Al-0.06 Sc-0.02 RE (at.%, with RE = Dy, Er, Gd, Sm, Y, or Yb) alloys is measured as a function of aging time at 300C. 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 overaging behavior. All RE segregate to the core of Al3(Sc1-xREx) precipitates. |
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NU @ karnesky @ |
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779 |
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