Microstructural Evolution of Cold-Deformed and Isothermally Treated ZA27 Alloys
| Autor: | Wilky Desrosin, Gerardo Hector Rubiolo, Carlos Enrique Schvezov |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Materials Research, Vol 24, Iss 4 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1516-1439 1980-5373 |
| DOI: | 10.1590/1980-5373-mr-2020-0581 |
| Popis: | Abstract Pure ZA27 alloys and ZA27 alloys with Cu and Mg additions were cast and deformed by compression. Samples of both alloys were heat treated at 460°C after deformation and the evolution of the microstructure as a function of time measured. The results showed that the average grain size increases with the increase of time for both alloys, with a coarsening rate which is 55% lower for the alloyed ZA27 alloy than the rate of the pure ZA27 alloy. X-ray diffraction analysis indicated that the ZA27 alloys containing Cu and Mg additions present the ε phase which is not present in the non-alloyed ZA27 alloy; and that the α and η phases transform to the β phase during heat treatment. Microhardness measurements showed that the ZA27 alloy with Cu and Mg additions has higher microhardness than the pure ZA27 alloy. |
| Databáze: | Directory of Open Access Journals |
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