Some metallurgical aspects of chips formed in high speed machining of high strength low alloy steel

摘要

Adiabatic shear bands and white layers induced during high speed cutting of 30CrNi_3MoV steel were investigated by scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The results show that some non-diffusional martensitic phase transformation and dynamic recrystallization might take place in the adiabatic shear bands and white layers within the chips.