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    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50198


    題名: Anodisation of friction stir welds in AA 5052-O alloy
    作者: Shih,TS;Jhou,YJ;Wang,JW;Hwang,LR
    貢獻者: 機械工程學系
    關鍵詞: ALUMINUM-ALLOY;NUGGET ZONE;MODEL
    日期: 2011
    上傳時間: 2012-03-27 17:06:14 (UTC+8)
    出版者: 國立中央大學
    摘要: An AA 5052-O alloy was used as the base metal for friction stir welding (FSW). The heat and maximum temperature developed in the matrix of the sample during FSW were computed. Optical observations showed grey strips that appeared on the surface of the sample after anodisation. These grey strips could be attributed to the emergence of a thermomechanically affected zone (TMAZ) from the bulk friction stir welded sample. Mg solubility in the TMAZ increased when Mg(2)Si particles that inherently existed in the matrix of the AA 5052-O alloy dissolved after being subjected to the maximum temperature. In addition, the TMAZ was also subjected to shear stress. Plastic deformation increased the dislocation density. The combined effects of the increased dislocation density and enriched Mg content led to a change in the corrosion resistance and anodic behaviour of this zone.
    關聯: SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
    顯示於類別:[機械工程學系] 期刊論文

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