Abstract
Microstructure and phase transformation of a cast Zn-Al-based alloy (ZnAl11Cu3) are studied during ageing using X-ray diffraction and back-scattered scanning electron microscopy techniques. Decomposition of a zinc-rich η′s phase is observed to take place in the way of continuous precipitation. A four-phase transformation, α + → T′ + η, occurs during prolonged ageing. It is found that the phases involved in the phase transformation can be distinctly identified by using different atomic contrasts in the back-scattered scanning electron image of precipitates.
Original language | English |
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Pages (from-to) | 1327-1330 |
Number of pages | 4 |
Journal | Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques |
Volume | 92 |
Issue number | 12 |
Publication status | Published - 1 Dec 2001 |
Externally published | Yes |
Keywords
- Ageing
- Phase decomposition
- Zn-Al alloys
ASJC Scopus subject areas
- Metals and Alloys