Regularities of strain hardening of crystalline materials containing composite ensembles of defects

The analysis of the processes of the glide dislocation movement through the composite ensembles of point obstacles and forest dislocations in the crystals with HCP and AHC structure have been carried out by computer simulation methods. The simulation was performed taking into account the fine structure of the internal stress fields generated by the forest dislocations. There have been done the analysis of possible interoperability between the various ensembles of point obstacles in the process of glide dislocations movement through chaotic composite ensembles of forest dislocations and point obstacles. There have been found that different point obstacles due to changes in their density in accordance with their power are interchangeable in terms of contribution to the total work hardening, and from the point of view of other statistical characteristics. A universal formula for calculating the total strain hardening on the basis of data on contributions to the strengthening of the respective one-component ensembles have been suggested.