Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al
Abstract
Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O 3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrolytic copper compacted under the same conditions, while the conductivity was 68% IACS. Also, it was found that the prealloyed compacts preserved much of the hardness after exposure to high temperature in inert atmospheres.
Keywords:
Copper matrix hardening / Dispersion-hardened copper / High energy ball milling / Internal oxidation in airSource:
Materials Science Forum, 2005, 494, 493-498Publisher:
- 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes
DOI: 10.4028/0-87849-971-7.493
ISSN: 0255-5476
PubMed:
Scopus: 2-s2.0-33745230261
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Rajković, Višeslava M. AU - Božić, D. AU - Vračarić, D. AU - Romhanji, Endre PY - 2005 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/739 AB - Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O 3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrolytic copper compacted under the same conditions, while the conductivity was 68% IACS. Also, it was found that the prealloyed compacts preserved much of the hardness after exposure to high temperature in inert atmospheres. PB - 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes T2 - Materials Science Forum T1 - Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al EP - 498 SP - 493 VL - 494 DO - 10.4028/0-87849-971-7.493 ER -
@article{ author = "Rajković, Višeslava M. and Božić, D. and Vračarić, D. and Romhanji, Endre", year = "2005", abstract = "Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O 3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrolytic copper compacted under the same conditions, while the conductivity was 68% IACS. Also, it was found that the prealloyed compacts preserved much of the hardness after exposure to high temperature in inert atmospheres.", publisher = "6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes", journal = "Materials Science Forum", title = "Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al", pages = "498-493", volume = "494", doi = "10.4028/0-87849-971-7.493" }
Rajković, V. M., Božić, D., Vračarić, D.,& Romhanji, E.. (2005). Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al. in Materials Science Forum 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes., 494, 493-498. https://doi.org/10.4028/0-87849-971-7.493
Rajković VM, Božić D, Vračarić D, Romhanji E. Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al. in Materials Science Forum. 2005;494:493-498. doi:10.4028/0-87849-971-7.493 .
Rajković, Višeslava M., Božić, D., Vračarić, D., Romhanji, Endre, "Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al" in Materials Science Forum, 494 (2005):493-498, https://doi.org/10.4028/0-87849-971-7.493 . .