STRUCTURAL TRANSFORMATIONS IN Al-Cu COMPOSITE
I. S. Los', A. V. Khorin, G. V. Kozlov,
and A. V. Pryshchak
Penza State University
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
Analysis of the Al-Cu composite properties with
intermetallic hardening obtained as a result of
complex technology.
2
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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Explosive welding
Rolling
Heat treatment
Micro arc oxidation
Finished material
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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Form fibers : d – fiber diameter;
h – strip height; a – strip width
1 – explosive; 2, 4 – matrix plates; 3 – Cu filaments; γ – angle of
impact; D – direction of detonation; V – impact velocity; Vк – contact
point velocity; k1 – gap between matrix plates
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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t = 22,7 µs
t = 10,7 µs t = 12,1 µs
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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×5 ×100
macrostructure in cross-section
dedicated fragment
microstructure
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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25 % ×100 50 % ×100
93 % ×150
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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1 – aluminum matrix; 2 – phase CuAl2; 3 – phase CuAl; 4 – copper fiber
X-ray spectrum phase CuAl2
X-ray spectrum phase CuAl
phase CuAl2 9,5 … 10,5 GPa phase CuAl 6,0…7,5 GPa
× 200
× 200
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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The volume of intermetallic
phases, %
Mechanical property
Tensile strength, GPa
Modulus of elasticity,
GPa
Elongation, %
Specific strength, km
Specific modulus of elasticity,
103 km
0,5 175,6…178,65 75,86…77,09 21,0…22,5 6,38…6,50 2,76…2,80
2,5 193,2…199,6 79,59…81,06 20,7…22,4 7,02…7,25 2,89…2,95
5,0 208,93…212,3 82,6…83,68 20,2…22,1 7,59…7,71 3,0…3,04
9,0 232,05…233,15 80,95…82,32 19,3…21,0 8,43…8,47 2,94…2,99
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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Tensile strength, GPa
Modulus of elasticity, GPa
Specific strength, km
Specific modulus of elasticity,103 km
1 – AlMg2; 2 – Composite after heat treatment; 3 – Composite after heat treatment and micro arc oxidation technology
1 2 3
1 2 3
1 2 3
1 2 3
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
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X-ray spectral analysis had following result: phase side with
copper consists of CuAl predominately and phase side with
aluminum consists of CuAl2 predominately.
The interdiffusion coefficient activation energy of CuAl was
150,3 kJ/mol, CuAl2 - 96,3 kJ/mol.
Aluminum-copper intermetallic composite has high mechanical property and handling ability.
Complex technology is protected by patent.
XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)
Thank you Thank you
for attention!for attention!
E-mail: [email protected]: [email protected]
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XII International Symposium on Explosive Production of New Materials: Science, Technology, Business, and Innovations (EPNM-2014)