In the previous three parts of this series, we examined the relationship between properties, microstructure and alloy composition and the defects that can arise during manufacture. In this fourth part, we will examine hot and cold working in a little more detail and relate them to control of microstructure and, hence, properties. We will also look at joining processes, particularly soldering and welding, used in jewelry manufacture and finish with some comments on corrosion and tarnishing and how we can influence these by alloying and microstructure control.

Author: Dr. Christopher W. Corti