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Completeness of β-phase decomposition reaction in Cu–Al–Ag alloys

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Abstract

The completeness of β-phase decomposition reaction in the Cu–11wt%Al–xwt%Ag alloys (x = 0, 1, 2, and 3) was studied using differential scanning calorimetry (DSC), X-ray diffractometry (XRD), and optical microscopy (OM). The results indicated that β-phase transformations are highly dependent on cooling rate and on the presence of Ag. On slow cooling, the silver presence prevents the β- and β1-phase decomposition; thus, inducing the martensitic phase formation. After rapid cooling, a new thermal event is observed and the reverse martensitic transformation is shifted to lower temperatures.

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Acknowledgements

The authors thank to CNPq, FAPESP, and LNLS.

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Correspondence to R. A. G. Silva.

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Silva, R.A.G., Machado, E.S., Adorno, A.T. et al. Completeness of β-phase decomposition reaction in Cu–Al–Ag alloys. J Therm Anal Calorim 109, 927–931 (2012). https://doi.org/10.1007/s10973-011-1815-z

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  • DOI: https://doi.org/10.1007/s10973-011-1815-z

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