PRODUCTION OF MICROSTRUCTURE MULTIPLY COMPOSITES FROM DIFFERENT METALS OR ALLOYS Russian patent published in 2016 - IPC B32B15/01 B23K20/04 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming. Claimed method comprises cutting of initial sheets of various metals to lengths, processing of their surfaces, assembling of cut lengths to stacks, hot processing of stacks by their heating and rolling to get the sandwiched stack work pieces. Said jobs are reiterated to get the sandwiched sheet composite material with preset number of applies and of required depth. Initial blanks are composed of sheets of diverse metal alloys mutually soluble in the range of heating temperatures at hot forming. Cut blanks are assembled to the stack consisting of least three plies at alternation of plies of fusible metal with less fusible metal. A dislocation barrier is produced at heating to inhibit the propagation of recrystallization from one ply into the other and microstructure is produced. Sandwiched sheet composite composed of stacked blanks is produced by plastic deformation at multistep processing to final depth. Note here that stack plies feature the microstructure. Then, thermal diffusion alloying is performed including the diffusion annealing of duration providing the penetration of diffusion zones of different contacting plies of material that make the stack to the depth, in each, comparable with that of one ply. Then, thermal hardening is performed including the quenching and ageing at temperature corresponding to quenching and ageing temperatures of fusible material. Invention allows the production of sandwiched composite of ply microstructure and with alternating plies, and increase in efficiency.

EFFECT: sandwiched composite of ply microstructure.

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