Abstract

The effects of tin additions on the ordering process of PdCu ordered alloys were investigated by electric resistivity measurements, optical microscopic observations, hardness tests, X-ray diffraction, and electron probe micro-analysis. The ordering process was found to be acccelerated by addition of tin, 1.0% addition being the most effective. This acceleration of ordering by the addition of tin may be explained by assuming that the formation of ordered nuclei becomes easier. The β-phase is stable up to 900 °C with 1.5% Sn addition.

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