Effects of chromium carbide on the microstructures and wear resistance of high speed steel obtained by powder injection moulding route
| Autor: | A. Romero, Grzegorz Matula, Gemma Herranz |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Scanning electron microscope Alloy Sintering 02 engineering and technology engineering.material 01 natural sciences Carbide chemistry.chemical_compound 0103 physical sciences Materials Chemistry Injection moulding Composite material 010302 applied physics Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure chemistry Mechanics of Materials Ceramics and Composites engineering 0210 nano-technology Chromium carbide High-speed steel |
| Zdroj: | Powder Metallurgy. 60:120-130 |
| ISSN: | 1743-2901 0032-5899 |
| DOI: | 10.1080/00325899.2017.1288778 |
| Popis: | The effects of chromium carbide on the microstructures and wear resistance of high speed steel were studied. Metal matrix composites (MMCs), based on M2 high speed steel reinforced with different percentages of Cr3C2, were produced following a metal injection moulding route: feedstock manufacturing, injection, debinding and sintering. The weight fraction of hard second phase particles in tool steels is limited by the formation of large interconnected carbides that embrittle the alloy. Additions of up to 14 wt-% Cr3C2 were successfully prepared. The influence of the chromium carbide content on the optimum sintering temperature was analysed. The mechanical properties of the sintered composites were obtained by measuring hardness and wear behaviour. Microstructure and wear mechanisms were investigated by means of scanning electron microscopic observations. These results, together with X-ray diffraction characterisation and EDS analysis, allow explanation of the mechanisms responsible for the wear beh... |
| Databáze: | OpenAIRE |
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