An investigation of material structure transformation in the cutting process

An understanding of the cutting process and its mathematical modelling requires knowledge about the material structures and their behaviours under the mechanical and thermal loads in the transformation zone. The tests with single and double phase microstructures - copper and carbon steels, with preliminary deformed and undeformed structures have been executed. The influence of various microstructures and process conditions on the energy quanta and the plastic deformation temperature in the transformation zone and the dislocation mechanism are better understood. Preliminary accumulated energy in the material structure contributed to the transformation energy and to a decrease of the temperature. Based of these results some elements of the transfer function of the process may contribute to a generic expression for an on line cutting process identification.