Open AccessApplied temperature analysis for designing technology of composite materials: parameter determination of aluminium alloys rolling
Author(s) -
G.P. Doroshko,
В. А. Михеев
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/775/1/012112
Subject(s) - materials science , indentation hardness , aluminium , composite material , isothermal process , hardening (computing) , work hardening , alloy , composite number , atmospheric temperature range , thermodynamics , microstructure , physics , layer (electronics)
The solution of the problems for designing new materials by methods of applied temperature analysis of ATA provides the conversion of experimental data to a digitized form. Their application in the development of mass compositions of a new series of products with an aluminosilicate matrix, dispersion-hardened composites and conglomerates, in all cases it turned out to be useful and effective, the optimization of composition and structure was greatly simplified. In the presented work, ATA is used to determine the parameters of rolling sheet blanks of layered composites to a thickness providing the necessary strength of work in the composition. The correspondence to the principle of periodicity of temperature analysis - T m A of the number of passes of rolling the alloy of the {Al – Mg – Li} system, changes in sheet thickness, strain resistance and microhardness is established. A linear correlation of the parameters of the deformation process with a decrease in elasticity due to local contact integration of volume particles characteristic of Li compounds with respect to temperature is noted. Structural transformations by T m A microhardness are precisely limited by stationary temperatures of 171°C and 514°C mesh isothermal discrete scanning IDS. The obtained T m A diagrams were used to determine the parameters of the technology for overcoming the known limit of plastic deformation. It is experimentally proved that the optimum deformation range belongs to this temperature range by characteristic bends of the lines in the microhardness-temperature diagram at various penetration rates and hardening times.