期刊名称:International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN:2347-6710
电子版ISSN:2319-8753
出版年度:2015
卷号:4
期号:4
页码:1822
DOI:10.15680/IJIRSET.2015.0404003
出版社:S&S Publications
摘要:In this work, friction stir process (FSP) was used to enhance surface properties of AA2024-T3 alloy. Theeffect of friction stir shoulder rotation in addition to its pressing effect on surface topography and mechanical propertieswas studied. Samples were FS processed with a flat pinless cylindrical shoulder of 10mm diameter with a constantrotational and travel speeds 945 rpm and 85mm/min respectively. Results show that processed layer thickness of about45 μm was produced after FSP. Microscopic examinations (OM and SEM) revealed refining grain size of second phaseparticles as a result of mixing effect of the tool. XRD results show changes in the height and width of the strengtheningphase θ(Al2Cu) peaks, while EDX results show that Al and Cu created at another energy (KeV) compared with thosethat are not in phase before FSP. The maximum hardness increment is about 40-45% and the maximum value obtainedat the surface is 190Hv compared to 130Hv before processing. A little bit increase was recorded in yield and tensilestrengths by an amount of 15% and 9% respectively after FSP.