Abstract

Locally prepared and homogenized Ag-10 at% Al wires were quenched from 400° C to room temperature followed by different ageing treatments at temperatures in the precipitation zone to obtain samples with different amounts ofμ-phase precipitation. Room temperature steady state creep and microhardness tests were performed in order to assess the degree of precipitation in the samples. Increased precipitation of theμphase was found to decrease the strain rate and to increase the hardness. The precipitation process was possibly enhanced by the quenched vacancies. X-ray analysis after creep fracture revealed a remarkable drop in the integral intensities, indicating the destruction of the ordered structure of theμ-phase, i.e. partial redissolution of it.

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