Re-crystallisation affects both the structure and the mechanical properties of metals. The knowledge of re-crystallization conditions for gold alloys is very important for optimizing the production process. Re-crystallization conditions (temperature and time) depend on the type of alloy and the degree of deformation. The following methods for determination of recrystallizsation characteristics will be compared: hardness measurements, metallographic investigation and differential thermal analysis. Samples are heat treated in cycles with temperature and time as variables. We will take into account 10-14-18Kt yellow, white and red alloys. They are tested with different procedures to compare methods for determination of re-crystallization characteristics.

Author: Daniele Maggian