Abrasive wear products transport during titanium scratching and abrasion

Buried abrasive tool wear products on the surface of critical titanium alloy products become a fatal defect that can significantly reduce the service life of the unit due to intense abrasive wear of the contacting surfaces and the formation of fatigue cracks. Using the example of single grain cutting, it is shown that as a result of micro-piercing of an abrasive material, metal transport to the contacting surfaces of the grain decreases and wear products are introduced into the treated surface. When grinding with tools made of superhard materials, the possibility of monitoring and controlling this process by X-ray spectral analysis is limited resulting from a significant error in determining small concentrations of light elements. In order to measure the parameters of the wear products transport of an abrasive material, a method based on the analysis of polished surfaces images obtained in backscattered electrons is proposed. Based on the results of the elemental analysis, the composition of the wear products and the measurement errors of the transfer parameters under grinding with silicon carbide and cubic boron nitride (CBN) wheels, namely the number and area of buried particles, were determined. The share of structured crystals of abrasive materials for silicon carbide wheels is 80% and for CBN disks is 70%, including 20% corundum crystals (filler).