کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
781208 899507 2017 9 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Surface characteristics of machined aluminium metal matrix composites
ترجمه فارسی عنوان
خصوصیات سطحی کامپوزیت های ماتریکس فلز آلومینیوم ماشین
کلمات کلیدی
کامپوزیت؛ برش دادن؛ میکرو سختی
Composite; Cutting; Microhardness
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی

This paper investigates the effect of cutting parameters and particulate properties (volume fraction and average particulate size) on the microhardness variations of the aluminium matrix beneath the machined surface. Orthogonal cutting tests were carried out on different aluminium matrix composites reinforced with varying volume fractions and average sizes of alumina particulates. Characterization of the machined subsurface was made using optical, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The metallographic analysis revealed severely damaged machined subsurface with numerous geometrical defects and plastically deformed aluminium matrix. This study also yielded some interesting findings on the influence of particulate volume fraction and average size in altering the microhardness in the aluminium matrix. The lower the reinforcement volume fraction and the coarser the particulates, the higher are the variations in matrix microhardness. The microhardness measurements on the aluminium matrix beneath the machined layer showed higher values when machining under wet conditions with reduced depth of plastically deformed zone.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Machine Tools and Manufacture - Volume 46, Issue 15, December 2006, Pages 2017–2025
نویسندگان
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