Effect of laser processing on the microstructure of a structural low-carbon steel

The macro- and microstructures and the distribution of microhardness over the height and width of the remelted and heat-affected zones in structural low-carbon grade 20 steel (1020 AISI) are investigated after laser processing under various conditions, including the application of an electric arc.     

Possibility of Nondestructive Testing of Operational Heating of Contact Surfaces of Rolling Bearings

The coupling between variation of parameters of nondestructive testing and heating of rolling bearings associated with their operation regime in a helicopter reduction gear is demonstrated. The coercive force method and the eddy-current method of testing outer bearing rings made from ShKh15 steel are considered.     

Physicomechanical properties and structure of the powder materials of the Fe-Si system

The integrated study of the structure and magnetic, electrical, and mechanical properties of the Fe-Si powder materials in a range of silicon concentrations 0–12 wt % showed that the dependence of all physicomechanical properties of these materials on the silicon content was related to the sequence of the formation of the disordered silicon solution in iron, ordered solution, and the Fe₃Si phase.