Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.1134/S0036029521050037
Ключевые слова: columnar solidification, modifying and microalloying, physicomechanical properties, precipitation-hardened alloys, structure
Аннотация: Abstract: The combined effect of modifying with cadmium and microalloying with rare-earth metals (REMs) on the formation of the structure and properties of the alloys based on electrical copper (copper hardened with fine CrB2 particles synthesized in a melt at the technologically available melting and casting temperatures) is studiПоказать полностьюed. In the case of modifying a copper-based alloy with to 0.1 wt % cadmium, the grain refining of metallic matrix to an average grain size of 0.15–0.35 mm is found to take place. Moreover, the addition of 0.1 wt % REM is found to have a dual effect: the addition purifies grain boundaries of oxygen and sulfur, and Cu6Ce (Cu6La) intermetallic particles absorbed on the surface of CrB2 particles prevent their coarsening at the expense of coagulation. This fact makes the application of complex additions promising to improve the structure and properties of precipitation-hardened copper-based alloys for electrotechnical purposes. © 2021, Pleiades Publishing, Ltd.
Журнал: Russian Metallurgy (Metally)
Выпуск журнала: Vol. 2021, Is. 5
Номера страниц: 628-634
ISSN журнала: 00360295
Издатель: Pleiades journals