ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Fe-B-Cr alloy powder in diameter of 32-53 μm made by argon atomization is low-pressureplasma sprayed to produce a rapidly solidified iron base composite deposit with finely dispersedboride particles. The constituents of the as-sprayed deposit formed on a water-cooled substrate are αphase and amorphous phase that are supersaturated with chromium and boron due to high cooling rateduring solidification of the melt. Heat treatment of deposit at 873K leads to decomposition of theamorphous phase, resulting in the formation of Fe3B. The deposit heat treated above 1073K iscomposed of α phase and (Fe,Cr)2B. The as-sprayed deposit produced on a non-cooled substrateconsists of α phase and (Fe,Cr)2B. The fine precipitates of about 0.1 μm in the as-sprayed depositcoated on a non-cooled substrate are boride. As deposit temperature increases, the coarsening of theprecipitate particles results in lowered hardness of deposits
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.721.pdf
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