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Grain boundary wetting and premelting in the Cu–Co alloysстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 декабря 2017 г.
- Авторы: Straumal B.B., Korneva A., Kogtenkova O., Kurmanaeva L., Zięba P., Zhevnenko S.N., Wierzbicka-Miernik A., Baretzky B.
- Журнал: Journal of Alloys and Compounds
- Том: 615
- Номер: 1
- Год издания: 2014
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 183
- Последняя страница: 187
- DOI: 10.1016/j.jallcom.2014.01.156
- Аннотация: The complete and incomplete wetting of Cu/Cu grain boundaries (GBs) by the Co-containing melt has been observed. The GB wetting in a peritectic system, where the GB wetting layer is depleted by a second component and not enriched like in the conventional cases, has been observed for the first time. The submicrograined structure in Cu–2.2 wt.% Co and Cu–4.9 wt.% Co alloys has been produced by the high pressure torsion. The melting process of both HPT-treated alloys was studied by the differential scanning calorimetry (DSC). The DSC melting curves were very asymmetric and have been deconvoluted into 2 and 4 different components, respectively. The positions of onsets and minima of high-temperature component peaks for both alloys correspond well with respective liquidus and solidus temperatures in the Cu–Co bulk phase diagram. The low-temperature component peaks were interpreted as GB premelting. The respective GB solidus line was constructed. The step-wise viscosity change of Cu–Co solid solutions was previously observed below the bulk solidus line. The viscosity changes 40–50 °C below the GB solidus line observed in this work. This difference can be explained by the difference in the GB character distribution or (alternatively) by the premelting in dislocations cores
- Добавил в систему: Жевненко Сергей Николаевич