What Cold Work is Necessary Before Material Recrystallizes

When I was younger I had a great soldering iron that was shaped so perfect. Being young I worked with it, After beating the hot bronze on the anvil with may little ball peen hammer it took only about 3 smacks till the crystals formed and I had a now blunted broken and quite un useable iron.

So with Bronze I would say about three smacks should do it.

The recrystallisation is a phenomenon that happen for nuacleation and growing; because of that need energy for nuclear, or the same need dislocation in the crystalline net and the best way and easiest is with cold work. There are a game among the temperature and the time for to control of phenomenon- I hope to help you don't hesitate to contact me ccvallino@hotmail.com

What is the material?

What is your annealing temperature?

Cold working a metal does not cause recrystallization, however, cold work produces internal stresses in the metal that become the nucleation sites for new crystals to grow upon annealing. Much of the energy of cold working is converted to motion, heat and sound, but some remains in the lattice as stress, therefore,the greater the amount of work deformation, the lower the temperature required for new grain growth.

Some metals, for example tin and lead, recrystallise below room temperature and therefore cannot be work hardened.

That being said, recrystallisation is a function of many factors;

• Chemical composition
• Microstructure
• Phases pressent
• Internal lattice stress or energy (from work deformation and/or interstitial or substitutional elements pressent in the lattice

The surest way to answer your question is to find the exact trade name or designation for your material and look up the specs from the manufacturer.