The article is devoted to modeling the temperature field in the linear friction welding. The proposed method allows to estimate the fraction of thermal energy into the flash, and diverted a one-dimensional temperature distribution in the weld zone by using the theory of thermal processes of N. Rykalin.

A thermo-mechanical model of linear friction welding has been developed. The temperature distribution during the heating process was determined using a one-dimensional model. The distribution of temperature and stress field during the forging phase was determined by solving the coupled problem in ANSYS. The model allows to predict the effect of welding parameters on the stress field, whereas modeling data are consistent with the residual stresses in welded joints of the Ti6Al4V alloy obtained during the experiment.

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To cite this article: V. V. Atroshchenko , V. M. Bychkov , A. M. Fridlyand , A. S. Selivanov & R. V. Nikiforov (2013) Effect of the geometry of the lanthanized tungsten cathode on the stability of the depth of penetration in argon-shielded welding,

A possibility of increasing wear resistance of Ti6Al4V alloy after cathodic plasma electrolytic nitriding in a solution of ammonium chloride and ammonia is shown. The competing effect of the surface erosion by the actions of discharges and high-temperature oxidation on the morphology and roughness of the surface was revealed. The complex effect of the surface roughness and surface layer hardness on the wear resistance of the titanium alloy was determined. It was found that the greatest decrease in the weight wear by a factor of 2.7 was observed for the sample with the maximum microhardness of the surface layer, reaching 820 HV, and the smallest surface roughness. It was shown that the friction coefficient decreased in proportion to the treatment time when the surface layer had low hardness, favoring the sliding of the counter-body.