2007 Al–Cu COMPOSITE BY EXPLOSIVE WELDING I.S. Los', A.V. Khorin, E.G. Troshkina and M.S. Gus'kov Russia, Penza State University

Analysis of the Al-Cu composite properties with intermetallic hardening obtained as a result of complex technology with the use of explosion welding

 Provision the joining of filaments and matrix without the formation of brittle intermediate phases  Preserve the integrity of filaments and their starting orientation

4 Containing 5 vol % of Cu filaments

5 а b 1 – electric detonator; 2 - explosive; 3 – flying plate; 4 – Cu filaments; 5 - fixed plate; 6 – insulating layer; 7 – steel base; 8 – additional ground; 9 – ground; D - direction of detonation

6 b х 90 а х 50 c х 50 Intermediate phase Matrix Filament Spill Matrix Filament

7 Deformation degree 20, 50, 75 %

8 Annealing temperature, О С 300, 350, 400, 450 Time in furnace, min 5, 10, 15, 30, 60, 120, 600

9 a х 50 b х 50 c х 50

10 X 500 Al Cu Intermetallic phase DPH from 680 to 700

11 Tensile strength of the composite MPa

х 50 х Intermediate phase Matrix Filament

13  The criterion for choosing the parameters of explosion welding is to form a strong joining to filaments and matrix without the formation of an intermediate phase  Heat treatment conditions can vary the amount of intermetallics in the structure of the composite  Investigation of the microstructure allows a quantitative and qualitative assessment of the intermetallic phase in the composite structure, which affects the performance of strength and plasticity of the material  The developed technology of explosion welding allows to obtain a composite material with desired physical and mechanical characteristics.

14 Thank you for attention!