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

作者： konrad j. m. papis.j.erg f. loeffler Peter j. UGGOWITZER ETH Zurich Laboratory of Metal Physics and Technology Wolfgang-Pauli-Str. 10

‘Com.ound casting’sim.lif.es j.ining processes by directly casting a m.tallic m.lt onto a solid m.tal substrate. A continuously m.tallurgic transition is very im.ortant f.r industrial applications, such as j.int structures of.spacef.am. constructions in transport industry. In this proj.ct, ‘com.ound casting’ of.light m.tals is investigated, aim.ng at weight-saving. The substrate used is a wrought alum.nium.alloy of.type AA5xxx, containing m.gnesium.as m.in alloying elem.nt. The m.lts are alum.nium.alloys, containing various alloying elem.nts (Cu, Si, Zn), and m.gnesium. By replacing the natural oxygen layer with a zinc layer, the inherent wetting dif.iculties were avoided, and com.ounds with f.awless interf.ces were successf.lly produced (no contraction def.cts, cracks or oxides). Electron m.croscopy and EDX investigations as well as optical m.crographs of.the interf.cial areas revealed their continu- ously m.tallic constitution. Dif.usion of.alloying elem.nts leads to heat-treatable m.crostructures in the vicinity of.the j.ining interf.ces in Al-Al couples. This perm.ts signif.cant variability of.m.chanical properties. Without signif.cantly cutting down on wettability, the f.rm.tion of.low-m.lting interm.tallic phases (Al3m.2 and Al12m.17 Im.s) at the interf.ce of.Al-m. couples was avoided by applying a protective coating to the substrate.

关键词： com.ound casting alum.nium alloys m.gnesium alloys interf.ce structure

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Light m.tal com.ound 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.j.erg f.loeffler Peter j.UGGOWITZER ETH Zurich Laboratory of Metal Physics and Technology

"Com.ound casting"sim.lif.es j.ining processes by directly casting a m.tallic m.lt onto a solid m.tal substrate.A continuously m.tallurgic transition is very im.ortant f.r industrial applications,such as j.int structures of.spacef.am. constructions in transport *** this proj.ct,"com.ound casting"of.light m.tals is investigated,aim.ng at *** substrate used is a wrought alum.nium.alloy of.type AA5xxx,containing m.gnesium.as m.in alloying elem.nt. The m.lts are alum.nium.alloys,containing various alloying elem.nts(Cu,Si,Zn) ,and *** replacing the natural oxygen layer with a zinc layer,the inherent wetting dif.iculties were avoided,and com.ounds with f.awless interf.ces were successf.lly produced(no contraction def.cts,cracks or oxides) .Electron m.croscopy and EDX investigations as well as optical m.crographs of.the interf.cial areas revealed their continuously m.tallic constitution. Dif.usion of.alloying elem.nts leads to heat-treatable m.crostructures in the vicinity of.the j.ining interf.ces in Al-Al *** perm.ts signif.cant variability of.m.chanical *** signif.cantly cutting down on wettability,the f.rm.tion of.low-m.lting interm.tallic phases(Al3m.2 and Al12m.17 Im.s) at the interf.ce of.Al-m. couples was avoided by applying a protective coating to the substrate.

关键词： com.ound casting alum.nium.alloys m.gnesium.alloys interf.ce structure

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