Abstract
This investigation studied methods of increasing toughness and lowering the melting temperature in 12 mass% Au-20mass% Pd-Ag-Cu alloy. This study also examined the influence of adding 2 mass% Zinc to alloy system.
To this end, the copper content of the 12 mass% Au-20 mass% Pd-Ag-Cu system alloy was increased to the eutectic line of the Ag-Pd-Cu ternary phase diagram.
This experimental alloy showed a balance between tensile strength and elongation at all heat treating temperatures. The tensile strength and elongation were approximately 940 MPa and 22% by age-hardening, 880 MPa and a minimum of 22% by solution hardening, and 680 MPa and 44.4% by air cooling.
Hence by increasing the copper content, the toughness of this alloy system can be improved.
