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The age-hardening of an In-added Au–Ag–Cu–Pd alloy was examined by characterizing the hardening behavior, phase transformations and changes in microstructure, and elemental distribution during aging over the temperature range 200 to 500 °C. The major product phases, Ag-rich α 1 and AuCu I, were formed homogeneously from the parent α 0 phase by the transformation of precursor metastable...
Commercial low-gold dental casting alloy composed of Ag-Pd-In-Au-Zn was studied to clarify the age-hardening mechanism and related microstructural changes. The hardness of solution-treated specimen began to increase and reached the maximum value with ageing time, and then the maximum hardness value decreased by further ageing. The changes of X-ray diffraction (XRD) pattern during isothermal ageing...
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