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Science China(Technological Sciences) 2009年第1期52卷 46-51页

作者： Konrad J. M. PAPIS joerg f. loeffler Peter J. UGGOWITZER ETH Zurich Laboratory of Metal Physics and Technology Wolfgang-Pauli-Str. 10

‘Compound casting’simplif.es joining processes by directly casting a metallic melt onto a solid metal substrate. A continuously metallurgic transition is very important f.r industrial applications, such as joint structures of.spacef.ame constructions in transport industry. In this project, ‘compound casting’ of.light metals is investigated, aiming at weight-saving. The substrate used is a wrought aluminium alloy of.type AA5xxx, containing magnesium as main alloying element. The melts are aluminium alloys, containing various alloying elements (Cu, Si, Zn), and magnesium. By replacing the natural oxygen layer with a zinc layer, the inherent wetting dif.iculties were avoided, and compounds with f.awless interf.ces were successf.lly produced (no contraction def.cts, cracks or oxides). Electron microscopy and EDX investigations as well as optical micrographs of.the interf.cial areas revealed their continu- ously metallic constitution. Dif.usion of.alloying elements leads to heat-treatable microstructures in the vicinity of.the joining interf.ces in Al-Al couples. This permits signif.cant variability of.mechanical properties. Without signif.cantly cutting down on wettability, the f.rmation of.low-melting intermetallic phases (Al3Mg2 and Al12Mg17 IMPs) at the interf.ce of.Al-Mg couples was avoided by applying a protective coating to the substrate.

关键词： compound casting aluminium alloys magnesium alloys interf.ce structure

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Light metal compound casting

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中国科学:技术科学 2010年第4期 435-435页

作者： Konrad J.M.PAPIS joerg f.loeffler Peter J.UGGOWITZER ETH Zurich Laboratory of Metal Physics and Technology

"Compound casting"simplif.es joining processes by directly casting a metallic melt onto a solid metal substrate.A continuously metallurgic transition is very important f.r industrial applications,such as joint structures of.spacef.ame constructions in transport *** this project,"compound casting"of.light metals is investigated,aiming at *** substrate used is a wrought aluminium alloy of.type AA5xxx,containing magnesium as main alloying element. The melts are aluminium alloys,containing various alloying elements(Cu,Si,Zn) ,and *** replacing the natural oxygen layer with a zinc layer,the inherent wetting dif.iculties were avoided,and compounds with f.awless interf.ces were successf.lly produced(no contraction def.cts,cracks or oxides) .Electron microscopy and EDX investigations as well as optical micrographs of.the interf.cial areas revealed their continuously metallic constitution. Dif.usion of.alloying elements leads to heat-treatable microstructures in the vicinity of.the joining interf.ces in Al-Al *** permits signif.cant variability of.mechanical *** signif.cantly cutting down on wettability,the f.rmation of.low-melting intermetallic phases(Al3Mg2 and Al12Mg17 IMPs) at the interf.ce of.Al-Mg couples was avoided by applying a protective coating to the substrate.

关键词： compound casting aluminium alloys magnesium alloys interf.ce structure

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