Abstract
Alloy 2090 fabricated as O-Temper sheet exhibited the presence of the T2 phase. The morphology and nucleation characteristics of the T2 phase in alloy 2090 were investigated by transmission electron microscopy. Also, the crystal structure was documented by electron and X-ray diffraction analyses. It was found that T2 precipitates formed preferentially at the interface of heterogeneities in the alloy. Several types of heterogeneities were identified. From these results it was proposed that as the impurities are eliminated, the propensity for nucleation of the T2 phase should be reduced.
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Ludwiczak, E.A., Rioja, R.J. Nucleation sites of the T2 phase in alloy 2090. J Mater Sci 27, 4842–4846 (1992). https://doi.org/10.1007/BF01105245
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DOI: https://doi.org/10.1007/BF01105245