Characterization of the aging response of a melt-spun Al-Be-Li alloy ribbon

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)1173-1178
Journal / PublicationMetallurgical Transactions A
Volume19
Issue number5
Publication statusPublished - May 1988
Externally publishedYes

Abstract

A rapidly solidified Al-10 wt pct Be-3 wt pet Li alloy has been produced by a melt-spinning technique. The aging behavior of the melt-spun ribbon has been characterized by a number of techniques, including differential scanning calorimetry, hardness measurements, and transmission electron microscopy. The results have shown that the aging responses of the ternary Al-Be-Li alloy are very similar to those of Al-Li binary alloys. Specifically, δ′ precipitates are formed at temperatures near 180 °C and they transform to δ at temperatures around 300 °C. Microstructural examination indicates that, in the Al-Be-Li alloy, α-Be particles are present in the matrix as independent dispersoids and, apparently, have little effect on the aging behavior of the Al-Li matrix; no new phases are present in the matrix of specimens heat treated up to 400 °C. The α-Be particles coarsen, however, above a temperature of approximately 300 °C. The growth of α-Be particles follows the classical Ostwald coarsening type of mechanism. © 1988 The Metallurgical Society of AIME.

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Citation Format(s)

Characterization of the aging response of a melt-spun Al-Be-Li alloy ribbon. / Nieh, T. G.; Pelton, A. R.; Oliver, W. C.; Wadsworth, J.

In: Metallurgical Transactions A, Vol. 19, No. 5, 05.1988, p. 1173-1178.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review