- Sep 22, 2015
Graham I believe it does.pure gold, being extremely ductile, doesn't work-harden
This is my understanding from university days in the 1960s!
Work hardening is a process by which which permanent deformation takes place by the formation of dislocations - i.e. the material suffers strain hardening, permanent deformation. As the number of dislocations increase they interact and thereby restricting their movement. It is that restriction which 'hardens' the material. The rate & degree of hardening is a function of the rate at which the dislocations are formed and how they interact - which varies from material to material depending on atomic structure and the state of the material at the start of the process.