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金属学报 2003
ON THE CHARACTERIZATION OF HARDENING OF GRINDING AFFECTED LAYER OF STEELS IN HARD STATE
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Abstract:
The micro-hardness and hall width values of X ray diffraction profiles are frequently used to characterize the hardening state of the grinding affected layers. However, for the grinding affected layers of two kinds of alloy steel treated in the hard state, the micro hardness results shown in this article indicate that the layers are work hardened by grinding plastic deformation while it greatly decreases the half-width values. Accordingly, the half- width values could not correctly describe the work hardening effect of ground surface layers of steels in the hard state. A model demonstrating that the plastic deformation caused by grinding reduces the half width values by decreasing the micro -stress is presented.