METHOD OF MANUFACTURING A COMPOSITE SPECIMEN WITH A SURFACE LAYER AND CONDUCTING TESTS TO DETERMINE THE PARAMETERS OF SURFACE HARDENING

FIELD: mechanics.SUBSTANCE: invention relates to the field of determining the mechanical properties of parts to be hardened, mainly with an applied, in particular sprayed, surface layer. Method for testing the surface hardening layer of a sample with registration of the deformation zone after indentation using the method of dividing grids. According to the invention, a surface layer is formed on the sample pre-assembled from the elements, a mesh is applied at the junctions of the composite sample during preliminary assembly, and the deforming action is performed at the junction of the elements of the composite sample, determined, for example, by the ultrasonic method, eddy currents, counting from the selected fixation planes of the composite elements specimen, in particular the specimen itself and / or the contour of its attachment, and the parameters of the deformation zone are determined at the joints after separation of the mating elements of the specimen, for example, by fracture, shear, removal of the surface layer, by evaluating the deformation zone directly by changing the elements of the specimen, for example, changing the parameters hardening, controlled, in particular, by hardness measurements, ultrasonic and eddy current methods, by changing the shape and position of the control structures, in particular the sample microstructures, including along sliding lines, points, depressions, a divider nets and their combinations. Also proposed is a sample design for use in the above method. EFFECT: invention provides a simplification of the procedure and an increase in the reliability of the result of determining the zone of plastic deformation, as well as the ability to simultaneously test different materials and / or coatings of samples.6 cl, 4 dwg Изобретение относится к области определения механических свойств упрочняемых деталей, преимущественно с нанесенным, в частности напыленным, поверхностным слоем. Способ испытания поверхностного упрочняющего слоя образца с регистрацией зоны деформации после индентирования с помощью метода делительных сеток. Согласно изобретению на предварительно собранном из элементов образце формируют поверхностный слой, в сопряжениях составного образца при предварительной сборке наносится сетка, а деформирующее воздействие производится в месте сопряжения элементов составного образца, определяемого, например, ультразвуковым методом, вихревыми токами, отсчетом от выбранных плоскостей фиксации составных элементов образца, в час