Diffusion-alloying sintering of Cr–Mo pre-alloyed iron powders with carbon: The effect of the carbon introduction method on the sinter’s properties
| Autor: | Seryozha Valkanov, Jordan Georgiev, Roumen Iankov, Sabine Cherneva, Lubomir Anestiev, Marcela Selecká |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Diffusion Metallurgy Metals and Alloys Sintering chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Micro structure chemistry 0103 physical sciences Materials Chemistry Physical and Theoretical Chemistry 0210 nano-technology Carbon |
| Zdroj: | International Journal of Materials Research. 112:48-56 |
| ISSN: | 2195-8556 |
| Popis: | The influence of the carbon introduction method on the microstructure and the mechanical properties of sinters produced from iron-based powders by diffusion-alloying sintering has been studied. Two methods of carbon introduction were tested: (1) Premixing of the base powder with graphite, and (2) Coating of the base powder with a carbon-containing substance. The results obtained could be summarized as (1) The microstructure and the mechanical properties depend on the method of carbon introduction; (2) The sinters produced from coated powders possess finer micro-structure, improved homogeneity, and in two out of three of the studied compositions, better mechanical properties. Based on the results obtained, a reasonable assumption was made that the method of carbon introduction affects the dissolution rate of the carbon additive, thus affecting the micro-structure and the mechanical properties of the sinter. |
| Databáze: | OpenAIRE |
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