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| Naji, M. |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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Lacerda, Pedro
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Publications (5/5 displayed)
- 2022A study on a cast steel reinforced with WC-metal matrix compositecitations
- 2021Production and characterization of austenitic stainless steel cast parts reinforced with WC particles fabricated by ex situ techniquecitations
- 2020Preparation and microstructural characterization of a high-Cr white cast iron reinforced with WC particlescitations
- 2020Microstructural characterization of TiC–White cast-iron composites fabricated by In Situ techniquecitations
- 2017The search for extreme asteroids in the Pan-STARRS 1 Survey
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article
Preparation and microstructural characterization of a high-Cr white cast iron reinforced with WC particles
Abstract
High-chromium white cast iron (WCI) specimens locally reinforced with WC–metal matrix composites were produced via an ex situ technique: powder mixtures of WC and Fe cold-pressed in a pre-form were inserted in the mold cavity before pouring the base metal. The microstructure of the resulting reinforcement is a matrix of martensite (α’) and austenite (γ) with WC particles evenly distributed and (Fe,W,Cr) 6 C carbides that are formed from the reaction between the molten metal and the inserted pre-form. The (Fe,W,Cr) 6 C precipitation leads to the hypoeutectic solidification of the matrix and the final microstructure consists of martensite, formed from primary austenite during cooling and eutectic constituent with (Fe,Cr) 7 C 3 and (Fe,W,Cr) 6 C carbides. The presence of a reaction zone with 200 µm of thickness, between the base metal and the composite should guarantee a strong bonding between these two zones. ; This research was funded by FEDER through the program P2020 |COMPETE, Projetos em Copromocao (project POCI-01-0247-FEDER-033417), and the program P2020|Norte2020, Programas doutorais (NORTE-08-5369-FSE-000051).