Grain A Grain B Expanding grain boundary as Grain A grows Higher temperature and longer time allows atoms near grain boundaries to shift their orientation enough so that they align themselves with the lattices of neighboring grains this shifts grain boundaries. See figures below. Grain A Grain B Explain how the ability to recrystallize determines whether a worked metal product will have hot or cold work properties. Explain the economics of hot and cold working method. Cost of fuel to heat work piece.
Equipment is subject to loading at relatively high temperatures.
Equipment doesn t have to operate at extremely high temperatures.