کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
236743 465684 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigation on selective laser melting behaviour and processing windows of in situ reacted Al/Fe2O3 powder mixture
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental investigation on selective laser melting behaviour and processing windows of in situ reacted Al/Fe2O3 powder mixture
چکیده انگلیسی

This study investigates the material behaviour and processing windows for selective laser melting (SLM), an additive manufacturing (AM) process, to directly fabricate net-shape Al metal matrix composite parts from Al/5wt.%Fe2O3, Al/10wt.%Fe2O3 and Al/15wt.%Fe2O3 powder mixtures. The processing windows of laser powers and scanning speeds are plotted in relation to the resulting surface roughness, density and hardness of SLM specimens. It is found that the in situ reaction of Al/Fe2O3 powder mixtures significantly influences the SLM processability and manipulates the range of applicable processing parameters for the direct production of particle reinforced Al matrix parts. The in situ reaction (affected by the proportion of Fe2O3 additive to the powder mixture) releases extra heat and collaborates with laser energy which can modify the visual surface and microstructural appearance or alter material characteristics in SLM processing windows. Higher Fe2O3 content leads to an increase in hardness, but a decrease in density of the SLM samples may occur.

Figure optionsDownload as PowerPoint slideHighlights
► Experimental processing windows were plotted for SLM of Al/Fe2O3 powder mixtures.
► Results contribute to energy-saving and low-cost SLM of Al composites.
► The released energy manipulates the visual surface profile and roughness.
► Higher amount of Fe2O3 additive increases the hardness of product.
► Higher amount of Fe2O3 additive may decrease the overall part density.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 231, November 2012, Pages 112–121
نویسندگان
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