investigation of nanocrystalline structucture of severe plastic deformed aluminium 6061 alloy surface by afm and xrd
نویسندگان
چکیده
wire-brushing is used for different purposes such as removing metal surfaces oxides, increasing surface brightness, improving fatigue properties and surface activation before coating. the wire-brushing severely scratches and stirs the metals in the surface layers, so that complicated metal flow gives rise to very large amount of plastic strain and increases dislocation density of the surface layer. after recovery, subdivided grains and a nanocrystalline structure are formed on the surface. formation of nanocrystalline structure on the surface of al 6061 alloy by wire brushing at various brushing speeds was investigated by using atomic force microscopy and x-ray diffraction. the results showed that the severe plastic deformation decreased the surface grain size to 30-70 nm.
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15 صفحه اولInvestigation of Mechanical Properties for Commercial Purity Titanium Severely Plastic Deformed by Accumulative Roll-bonding Process
In this study accumulative roll bonding (ARB) process up to 8 Cycles (equivalent strain of 6.4) at ambient temperature was used in order to improve the mechanical properties of Commercial purity titanium (CP-Ti).Several experiment has been done and Mechanical properties of specimen has been discussed. For investigating optical microscope punching and hardness test were utilized. This is the fir...
متن کاملInvestigation of Mechanical Properties for Commercial Purity Titanium Severely Plastic Deformed by Accumulative Roll-bonding Process
In this study accumulative roll bonding (ARB) process up to 8 Cycles (equivalent strain of 6.4) at ambient temperature was used in order to improve the mechanical properties of Commercial purity titanium (CP-Ti).Several experiment has been done and Mechanical properties of specimen has been discussed. For investigating optical microscope punching and hardness test were utilized. This is the fir...
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عنوان ژورنال:
نشریه دانشکده فنیجلد ۴۲، شماره ۵، صفحات ۰-۰
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