Investigation of Friction and Abrasive Effects in Engineering Steels with Micromagnetic Measurements

Friction and abrasive surface treatment of engineering steels is the new effective tool for surface material strengthening and improving the resistance to fatigue damage. The specific abrasive machining of medium-carbon steel yields formation of surface hardened layer with super dispersed nanocrystal structure which increase the fatigue damage resistance in times. The present study aimed to establish the correlation between the metal structure at successive stages of abrasive machining and post machining heat treatment, from one hand, and the Barkhausen noise intensity, from the other. Experimentally investigated the influence of a depth of abrasive removal in the range 0 0,8 mm on the BNI. At the second group of experiments the behavior of BNI under the variation of heat treatment drawback at various temperatures in the range 20 С 600 С was investigated. The results give the background to create the non destructive technique to evaluate the strengthening parameters after friction and abrasive effects on engineering steels.