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M. Karlsohn, S. Weber, S.R. Alavi Zaree, S. Müller, W. Theisen, W. Reimers, A. Pyzalla:
"Manufacturing, microstructure and wear resistance of novel hot extruded Fe based metal matrix composites";
Powder Metallurgy, 51 (2008), 1; 31 - 37.

Materials with high resistance against abrasive wear are of high interest for many tool applications, e.g. in mining industry. These materials usually contain a large amount of hard ceramic phases embedded in a metallic matrix and can only be manufactured by powder metallurgy, most often via hot isostatic pressing. Here a new manufacturing route via powder presintering and direct hot extrusion is presented, which enabled manufacturing of Fe based metal matrix composites with up to 30% of fused tungsten carbide (FTC, WC/W2C) or titanium carbide (TiC). The matrixes chosen are hot and cold work tool steels. The manufacturing process is elucidated and microstructures formed are presented. The microstructure-property relation of the new Fe based MMC is discussed.

HOT EXTRUSION; METAL MATRIX COMPOSITES; TOOL STEEL; WEAR RESISTANCE; X-RAY DIFFRACTION

http://dx.doi.org/10.1179/174329008X271664

http://www.ingentaconnect.com/content/maney/pm/2008/00000051/00000001/art00006?token=004d1247617e2a46762c475f217d763b255c2a5b4653673f7b2f267738703375686f497dcc1c9