Using two-pass friction stir processing to produce nanocrystalline microstructure in AZ61 magnesium alloy

查看全文 作　　者：XingHao [1]Du;BaoLin [1]Wu

机构地区：[1] Department of Materials Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang, 110034, China

出　　处：《Science China(Technological Sciences)》索引2009年第52卷第6期,共5页

基　　金：Supported by the National Natural Science Foundation of China(Grant No.50771067) 摘　　要：Despite their interesting properties,nanostructured materials have found limited use as a result of the cost of preparation and the difficulty in scaling up.Herein,a two-pass friction stir processing(FSP)technique is employed to refine grain sizes to a nanoscale.Nanocrystalline AZ61 Mg alloy with an av-erage grain size of less than 100nm was successfully obtained using FSP.Corresponding to this,the highest microhardness of the nano-grained region reached triple times that of AZ61 substrate.In prin-ciple,by applying multiple overlapping passes,it should be possible to produce any desired size thin sheet of nanostructure using this technique.We expect that the FSP technique may pave a way to large-scale structural applications of nanostructured metals and alloys. 关键词：AZ61 Mg alloy FRICTION STIR PROCESSING nano-grained microstructure MICROHARDNESS

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Using two-pass friction stir processing to produce nanocrystalline microstructure in AZ61 magnesium alloy

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