The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al
The microstructural and morphological changes of inert gas atomized pre-alloyed Cu-1 wt. % Al powders subjected to hith-energy milling were studied. The microhardness of hot-pressed compacts was measured as a function of milling time. The thermal stability during exposure at 800 °C and the electrica...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2007-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.shd.org.yu/HtDocs/SHD/Vol72/No1/JSCS_V72_No01-06.pdf |
| _version_ | 1828834975894470656 |
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| author | VISESLAVA RAJKOVIC DUSAN BOZIC ALEKSANDAR DEVECERSKI |
| author_facet | VISESLAVA RAJKOVIC DUSAN BOZIC ALEKSANDAR DEVECERSKI |
| author_sort | VISESLAVA RAJKOVIC |
| collection | DOAJ |
| description | The microstructural and morphological changes of inert gas atomized pre-alloyed Cu-1 wt. % Al powders subjected to hith-energy milling were studied. The microhardness of hot-pressed compacts was measured as a function of milling time. The thermal stability during exposure at 800 °C and the electrical conductivity of compacts were also examined. During the high-energy milling, severe deformation led to refinement of the powder particle grain size (from 550 nm to about 55 nm) and a decrease in the lattice parameter (0.10 %), indicating precipitation of aluminium from the copper matrix. The microhardness of compacts obtained from 5 h-milled powders was 2160 MPa. After exposure at 800 °C for 5 h, these compacts still exhibited a high microhardness value (1325 MPa), indicating good thermal stability. The increase of microhardness and good thermal stability is attributed to the small grain size (270 and 390 nm before and after high temperature exposure, respectively). The room temperature electrical conductivity of compacts processed from 5 h-milled powder was 79 % IACS. |
| first_indexed | 2024-12-12T17:50:03Z |
| format | Article |
| id | doaj.art-4c4b4397b2154e569539c2d4d7b6a9c2 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-12T17:50:03Z |
| publishDate | 2007-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-4c4b4397b2154e569539c2d4d7b6a9c22022-12-22T00:16:50ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392007-01-017214553The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % AlVISESLAVA RAJKOVICDUSAN BOZICALEKSANDAR DEVECERSKIThe microstructural and morphological changes of inert gas atomized pre-alloyed Cu-1 wt. % Al powders subjected to hith-energy milling were studied. The microhardness of hot-pressed compacts was measured as a function of milling time. The thermal stability during exposure at 800 °C and the electrical conductivity of compacts were also examined. During the high-energy milling, severe deformation led to refinement of the powder particle grain size (from 550 nm to about 55 nm) and a decrease in the lattice parameter (0.10 %), indicating precipitation of aluminium from the copper matrix. The microhardness of compacts obtained from 5 h-milled powders was 2160 MPa. After exposure at 800 °C for 5 h, these compacts still exhibited a high microhardness value (1325 MPa), indicating good thermal stability. The increase of microhardness and good thermal stability is attributed to the small grain size (270 and 390 nm before and after high temperature exposure, respectively). The room temperature electrical conductivity of compacts processed from 5 h-milled powder was 79 % IACS.http://www.shd.org.yu/HtDocs/SHD/Vol72/No1/JSCS_V72_No01-06.pdfCu-1 wt.% Al pre-alloyed powdershigh-energy millinggrain sizehardeningelectrical conductivity |
| spellingShingle | VISESLAVA RAJKOVIC DUSAN BOZIC ALEKSANDAR DEVECERSKI The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al Journal of the Serbian Chemical Society Cu-1 wt.% Al pre-alloyed powders high-energy milling grain size hardening electrical conductivity |
| title | The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al |
| title_full | The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al |
| title_fullStr | The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al |
| title_full_unstemmed | The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al |
| title_short | The properties of high-energy milled pre-alloyed copper powders containing 1 wt. % Al |
| title_sort | properties of high energy milled pre alloyed copper powders containing 1 wt al |
| topic | Cu-1 wt.% Al pre-alloyed powders high-energy milling grain size hardening electrical conductivity |
| url | http://www.shd.org.yu/HtDocs/SHD/Vol72/No1/JSCS_V72_No01-06.pdf |
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