Study of low-temperature isothermal annealing in the PM Cu-Pt alloys after plastic deformation
| Autor: | Dragoslav Guskovic, Svetlana Ivanov, Marijana S. MladenoviĆ, I. Marković, Uroš Stamenković, Dragan Manasijević, Vesna Grekulović |
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| Jazyk: | srbština |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences cu-pt alloys Cu-Pt alloys 0104 chemical sciences lcsh:TA1-2040 isothermal annealing Isothermal annealing Composite material thermo-mechanical treatment 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | Tehnika (2020) 75(3):313-317 Tehnika, Vol 75, Iss 3, Pp 313-317 (2020) |
| ISSN: | 0040-2176 |
| Popis: | The investigation was performed on pure sintered (PM) copper and dilute PM copper-based alloys with 3 and 5.9 wt.% of platinum. Investigated PM samples were obtained using the standard powder metallurgy technique by mixing the elemental powders in proper ratio followed by pressing in hydraulic press and sintering in a hydrogen atmosphere. The PM samples were further cold deformed by rolling at ambient temperature to a total rolling reduction of 60 %. On pre-deformed samples, the low-temperature isothermal annealing up to the 100 hours was accomplished. During all stages of isothermal annealing, the values of Vickers hardness, micro-hardness, and electrical conductivity were measured. Also, the microstructure was analyzed using the scanning electron microscopy (SEM). This investigation has shown a slight increase in all measured properties for both dilute Cu-Pt alloys. An increase in mechanical properties was some more pronounced for more alloyed Cu-5.9wt%Pt alloy. During the low-temperature isothermal annealing, there were no significant changes in properties for pure pre-deformed copper. |
| Databáze: | OpenAIRE |
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