کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8000931 1516276 2014 39 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of severely deformed new composites fabricated by powder metallurgy including a stage of mechanical alloying
ترجمه فارسی عنوان
مشخص کردن ترکیبات جدید به شدت تغییر شکل یافته ساخته شده توسط متالورژی پودر شامل مرحله ای از آلیاژسازی مکانیکی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Mechanical properties of new composites having a binary matrix of Al-4Cu reinforced with TiO2 nano particles were investigated. The composites which consisted of 2 wt% and 8 wt% of TiO2 reinforcement particles, were fabricated using mechanical alloying and a powder metallurgy route. Morphology, phases and compounds formed during ball milling and densification of samples were studied. With increasing percentages of the reinforcement particles, mechanical properties of the composites were enhanced. Microstructural evolution and mechanical properties changes of the composites after application of twist extrusion (TE), as a severe plastic deformation (SPD) process, were also investigated. It was revealed that the more TE passes the higher hardness and yield strength obtained. In addition, increasing TE passes, led to occurrence of a more homogeneous distribution of the reinforcement particles within the structure, and development of an ultrafine-grained nano-structure. The maximum allowable number of TE passes was found to be four, above which the materials failed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 617, 25 December 2014, Pages 444-454
نویسندگان
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