%0 Journal Article
%T Pulse-Impact on Microstructure of Liquid-Phase-Pulse-Impact Diffusion Welded Joints of Particle Reinforcement Aluminum Matrix Composites at Various Temperatures
%A Kelvii Wei Guo
%J Engineering
%P 567-576
%@ 1947-394X
%D 2013
%I Scientific Research Publishing
%R 10.4236/eng.2013.57069
%X <p class=\"MsoNormal\" style=\"text-align:justify;\">
	<span lang=\"EN-US\">Investigation was to study the influence of pulse-impact
on microstructure of Liquid-Phase-Pulse-Impact Diffusion Welding (LPPIDW)
welded joints of aluminum matrix composite SiC<sub>p</sub>/A356, SiC<sub>p</sub>/6061Al,
Al<sub>2</sub>O<sub>3p</sub>/6061Al. Results showed that under the effect of
pulse-impact: </span><span lang=\"EN-US\">1</span><span lang=\"EN-US\">) the interface state between reinforcement particle (SiC, Al<sub>2</sub>O<sub>3</sub>)
and matrix was prominently; </span><span lang=\"EN-US\">2</span><span lang=\"EN-US\">) the initial pernicious contact-state of
reinforcement particles was changed from reinforcement (SiC, Al<sub>2</sub>O<sub>3</sub>)/reinforcement
(SiC, Al<sub>2</sub>O<sub>3</sub>) to reinforcement (SiC, Al<sub>2</sub>O<sub>3</sub>)/matrix/
reinforcement (SiC, Al<sub>2</sub>O<sub>3</sub>); </span><span lang=\"EN-US\">3</span><span lang=\"EN-US\">) the density of
dislocation in the matrix neighboring to and away from the interface in the
matrix was higher than its parent composite; and </span><span lang=\"EN-US\">4</span><span lang=\"EN-US\">) the intensively
mutual entwisting of dislocation was occurred. Studies illustrated that: 1)
deformation was mainly occurred in the matrix grain; and 2) under the effect of
pulse-impact, the matrices around reinforcement (SiC, Al<sub>2</sub>O<sub>3</sub>)
particles engendered intensive aberration offered a high density nucleus area
for matrix crystal, which was in favor of forming nano-grains and improved the
properties of the successfully welded composite joints.</span><span lang=\"EN-US\"><o:p></o:p></span> 
</p>
%K Aluminum Matrix Composite
%K Particle Reinforcement
%K Pulse-Impact
%K Microstructure
%K Diffusion Welding
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=34524