Influence of Strain-Hardened Zones and Intermetallic Layers of Explosion Welded and Heat Treated Al/Cu Laminated Metal Composites on the Evolution of Thermal Conductivity Coefficient

In this study laminated Al/Cu composite was obtained by explosion welding. The effect of strain-hardened zones and the intermetallic layer on thermal conductivity coefficient was investigated. For this purpose the specimens after explosion welding and after subsequent annealing to obtain the interme...

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Veröffentlicht in:Medžiagotyra 2014-01, Vol.20 (3), p.267-270
Hauptverfasser: TRYKOV, Yuriy, GUREVICH, Leonid, PRONICHEV, Dmitry, TRUNOV, Mikhail
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Sprache:eng
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Zusammenfassung:In this study laminated Al/Cu composite was obtained by explosion welding. The effect of strain-hardened zones and the intermetallic layer on thermal conductivity coefficient was investigated. For this purpose the specimens after explosion welding and after subsequent annealing to obtain the intermetallic layer were studied by X-ray methods and means of optical microscopy to determine the phase composition and the width of intermetallic layer. The microhardness tests were carried out to identify the width of the strain-hardened zones and the intermetallic layer. The thermal conductivity coefficient of the composite was experimentally measured to calculate the thermal properties of the strain-hardened zones and intermetallic layer. The width of the strain-hardened zone and the intermetallic layer was 80 pm and 160 pm respectively. The heat conductivity coefficients of the strain-hardened zones and intermetallic layer were 108 W/(mxK) and less than 35 W/(mxK) respectively.Original Abstract: Atlikus tyrima sprogdinamojo suvirinimo budu buvo gauti laminuotieji Al ir Cu kompozitai. Tirta mechaniskai kietintu sriciu metalu sluoksniu itaka silumos laidumo koeficientui. Siuo tikslu po sprogdinamojo suvirinimo ir velesnio atkaitinimo, norint gauti intermetalini sluoksni ir nustatyti fazine sudeti bei metalu sluoksnio storius, bandiniai buvo tiriami taikant rentgeno spinduliu difrakecijos metoda optiniu mikroskopu. Mikrokietumo bandymai buvo atliekami siekiant nustatyti mechaniskai kietintu sriciu ir intermetaliniu sluoksniu ploti. Eksperimentines kompozito silumos laidumo koeficiento vertes buvo panaudotos kietintu sriciu ir intermetaliniu sluoksniu siluminems savybems ivertinti. Nustatytos kietintu sriciu ir intermetaliniu sluoksniu plociu vertes sieke atitinkamai 80 [mu]m ir 160 [mu]m. Kietintos srities ir intermetaliniu sluoksniu silumos laidumo koeficientai atitinkamai buvo 10 super(8) W/(mxK) ir maziau nei 35 W/(mxK).
ISSN:1392-1320
2029-7289
DOI:10.5755/j01.ms.20.3.4602