Pulse current assisted laser peen forming and hydrophobic surface preparation of aluminium alloys

A method of processing aluminium alloy by pulse current assisted laser peen forming followed by making the peened surface hydrophobic. During laser peening the aluminium alloy is clamped between electrodes and silicone oil is used as a confining layer. Simultaneous application of the pulsed current...

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Bibliographische Detailangaben
Hauptverfasser:	Jianzhong Zhou, Pengfei Li, Gaoqiang Jiang, Xiankai Meng, Shu Huang, Yu Zhang, Yanqiang Gou, Li Li, Xv Feng
Format:	Patent
Sprache:	eng
Schlagworte:	CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WELDING WORKING BY LASER BEAM WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A method of processing aluminium alloy by pulse current assisted laser peen forming followed by making the peened surface hydrophobic. During laser peening the aluminium alloy is clamped between electrodes and silicone oil is used as a confining layer. Simultaneous application of the pulsed current and peening laser on the aluminium whilst it is clamped results plastic deformation and grain refing, with the middle of the aluminium alloy protruding towards the laser and pores being formed in the peened surface. The hydrophobic surface is made by soaking the laser-peened aluminium for 40-60 minutes in an anhydrous ethanol solution which contains 1-2 % of perfluorooctyltriethoxysilane at a temperature in the range 100-120 0C.