Comparative analysis of coarse-grained powder and nanostructured copper properties
| Autor: | A V Dyadichev, L. A. Ryabicheva, D V Reshetnyak, V V Dyadichev |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 1967:012001 |
| ISSN: | 1742-6596 1742-6588 |
| Popis: | The paper presents the technologies of obtaining powder copper materials, got by forging of a porous workpiece with a puncheon, not entering the matrix hollow, and by equal channel angular pressing of a porous workpiece during three passes. It is found out that friction coefficient decreases with the grain diameter decrease and with the increase of the accumulated deformation on the passes. Besides, friction coefficient value’s going into the steady stage occurs during a longer period than for coarse-grained powder copper. The wear value for the nanostructured copper is much less than for the coarse-grained powder copper. Nanostructured copper is recommended to be used as an antifriction material at little pressures and high speeds of sliding. The paper demonstrates that due to the control of the structure during plastic deformation it is possible to obtain the material with the improved wear resistance. |
| Databáze: | OpenAIRE |
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