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Materials of high hardness and wear resistance joined to stainless steel by 2C-MIM

: Mulser, Marco; Baumann, Andreas; Ebert, Sabine; Imgrund, Philipp; Langer, Ingolf; Petzoldt, Frank

European Powder Metallurgy Association -EPMA-:
Developing the powder metallurgy future. Proceedings. CD-ROM : 21 - 24 September 2014, Messezentrum Salzburg, Austria; Additive manufacturing; hard materials and diamond tools; hot isostatic prossing; new materials and applications; powder injection moulding; PM structural parts; Euro PM2014 Congress & Exhibition
Shrewsbury: EPMA, 2014
ISBN: 978-1-899072-44-6
9 pp.
International Powder Metallurgy Congress and Exhibition (Euro PM) <2014, Salzburg>
Conference Paper
Fraunhofer IFAM ()

Many technical products such as automobiles, tools and mechanical machines demand for metal components that are weld able as well as withstand abrasive wear during application. Weldable MIM materials such as the typically applied stainless steel 316L possess a rather low wear resistance with a hardness of less than 300 HV. One possibility to improve the wear resistance is to connect another material to the surface, corner or edge where the wear forces are effective. This paper shows that stainless steel 316L can be combined with a CoCr alloy, a WC-Co metal matrix composite (MMC) and a WC-NiMMC by two component metal injection molding (2C-MIM). The hardness is locally improved to 450 HV with the CoCr alloy and to 1150 HV with the WC MMC’s. The material bonded connection between 316Land the CoCr alloy shows a tensile strength of 630 MPa which is comparable to the strength of 316L.