ISSN:
1013-9826
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:
WC steel bond hard alloy powders were compacted by explosive compaction on the surface ofcarbon steel, then the composite layer was prepared by liquid-phase sintering in vacuum. The phases andmicrostructures of the interface of composite layer were observed by SEM, EDS, TEM. Result showedthat the thickness of the interface was about 30μm, and the elements of W, Cr, C were detected in theinterface. The structures of the interface were pearlites which were composed of the layered tablets ofM23C6 and ferrite. The layered tablets were perpendicular to the interface. The structures were thepearlites and ferrites in the side of the carbon steel near the interface but globular carbides, whose phase isW3Fe3C, and pearlites in side of steel bond hard alloy. During sintering at 1623K, all elements ofmetal-powder and C, V, which were decomposed by hard-phase, interdiffused in the interface. Themultiple carbides were found in the interface and steel bond hard alloy. As a result, the powders formedinto compact alloy by itself, and at the same time there was a good metallurgical bonding between thecarbon steel and the hard alloy
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1606.pdf
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