INVESTIGATION OF WELDING PROCESSES OF MULTILAYER STRUCTURES COMPOSED FROM DIFFERENT CHEMICAL COMPOSITION CRYSTALLITES BY VACUUM HOT ROLLING

Promising method of laminated composite materials production is the method of metal pack rolling in vacuum. The proposed method is based on the welding of heterogeneous materials in solid phase, that contain easily oxidized metals and alloys. Processes occurring during multi layer structures of different chemical composition welding are examined. On the example of multi layer structure Ti-Nb-Cu steel forces operating on the materials in the pack are studied. The welding of strata of laminas is studied on a metallographic microscope and with the help of an electronic raster microscopy is learnt mass transfer of one material in other.