ВПЛИВ ТОВЩИНИ ПРОШАРКУ НА НАПРУЖЕНО-ДЕФОРМОВАНИЙ СТАН ЗВАРНИХ І ПАЯНИХ З'ЄДНАНЬ ЖАРОМІЦНИХ СПЛАВІВ

Abstract

The stress-strain state (SSS) has been researched by the method of the computer modeling in the limits of the elasticity under the influence of the axis load of the cylinder samples with «soft» and «hard» interlayer. «Soft» is the interlayer with less module of elasticity, and «hard» is the interlayer with bigger modulus of elasticity that the module of the base metal. It was established that the complex SSS with radial, axis and tangential tension has been received in the small zone of the base metal near the external surface of the joint with the interlayer and in the interlayer too. The level of the equivalent tension is changed depending on the interlayer characteristics. It was showed that the thickness change of the «soft» and «hard» inter-layers of the researched thickness 0,050…0,200 mm does not impact into the character and the value of tension of the volume SSS. It is changed only the duration of this zone which is about 5 thicknesses of the interlayer. In all cases the interlayer thickness in the base material and in the interlayers, the character of the distribution and the value of SSS coefficients of hard-ness are equal practically. The appeared in the zone of the connection SSS practically does not influence into strength of the base metal on the biggest part of the joint length. It leads to the softening of the metal («soft» inter-layer) or the hardening («hard» interlayer) near the external surface. In the interlayer on the joint length, the metal of the «soft» interlayer is hardening, and the metal of «hard « interlayer is softening. The increase of the interlayer material stiffness, comparing with the base metal, contributes the appearance and the development of the plastic deformation due to the increase of the equivalent tension its softening,the decrease of the interlayer material stiffness, decreases the appeared in it the equivalent tension and increases its strength. It is necessary to take into account during the choice of the inter-layer type or the solder for the improvement of the joint formation at the diffuse welding and soldering.