NDLI: Effects of Sintering Atmosphere on the Mechanical Properties of Al-Fe Particle-Reinforced Al-Based Composites

Content Provider	Springer Nature Link
Author	Xue, Yang Shen, Rujuan Ni, Song Xiao, Daihong Song, Min
Copyright Year	2015
Abstract	Al-based composites reinforced by Al-Fe intermetallic compounds have been fabricated by powder metallurgy technique. The reinforcements were formed in the aluminum matrix by in situ solid-state reaction between pure Al and pure Fe powders. The effects of sintering atmosphere on the microstructures and mechanical properties of the composites were systematically studied by scanning electron microscopy, energy dispersive x-ray spectroscopy, x-ray diffraction analysis, and compressive tests. It has been shown that Al-Fe intermetallic particles (including a large number of the Fe-Al$_{5}$Fe$_{2}$ core-shell structured particles) were the dominant reinforcements in the composites sintered under Ar atmosphere, while pure Fe particles were the dominant reinforcements in the composites sintered under N$_{2}$ atmosphere. N$_{2}$ atmosphere is more effective than Ar atmosphere in increasing the sintered density of the composites due to the formation of aluminum nitride, which can effectively fill the pores. Thus, the compressive mechanical properties of the composites sintered under N$_{2}$ atmosphere are higher than those of the composites sintered under Ar atmosphere.
Starting Page	1890
Ending Page	1896
Page Count	7
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	24
Issue Number	5
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2015-03-13
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Al-Fe intermetallics in situ reaction metal matrix composite sintering atmosphere Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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