توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Tribological performance of Steel\TiC nanocomposite produced by friction stri processing
اطلاعات انتشار: اولین همایش بین المللی و ششمین همایش مشترک انجمن مهندسی متالورژی ایران، سال
تعداد صفحات: ۴
In this study, the almost new processing technique, friction stir processing (FSP) was employed to produce nanocomposite surface layers on mild steel. Nano–sized TiC particulates were introduced to the stir zone by means of a pre–made groove. A tungsten carbide tool was used to plasticize the mild steel substrate. The process transformed the original pearlite microstructure to acicular–type ferrite, resulting in significant increase in surface hardness. This surface hardening produced a significant benefit for friction and wear behavior of the steel as measured by unidirectional sliding pin–on–disk testing. Under sliding, FSP reduced friction coefficient and wear rate and increase wear properties about four times more than that of the as–received mild steel. The surface nano–composite layer produced by four FSP passes showed superior wearresistance; this is attributed to its greater micro hardness value (due to presence of finer matrix grains and uniform dispersion nano–sized TiC particles<\div>
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