Back to Search
Start Over
Semisolid microstructure evolution of the predeformed AZ91D alloy during heat treatment
- Source :
-
Journal of Alloys & Compounds . May2005, Vol. 395 Issue 1/2, p108-112. 5p. - Publication Year :
- 2005
-
Abstract
- Abstract: The semisolid microstructure evolution process of the predeformed AZ91D alloy during heat treatment was studied. After being compressed by a ratio of 20.6% in height at 220°C, all the dendrites oriented in the same way. With increasing heat-treatment temperature, the dissolution of eutectic β-Mg17Al12 first took place, resulting in the primary dendritic grains coarsening into interconnected non-dendritic grains. With heating continuously, a large amount of polygon recrystallization grains occur in the microstructure. Subsequently, the residual interdendritic β-Mg17Al12 at the edges of the primary grains and the new recrystallization grains melted in succession at higher heat-treatment temperature and the primary grains separated into small polygon grains. After being heat-treated at the semisolid temperature, the amount of liquid increased until the solid–liquid system reached its equilibrium state, and the grains spheroidized. [Copyright &y& Elsevier]
- Subjects :
- *MICROSTRUCTURE
*ALLOYS
*FLUIDS
*MICROMECHANICS
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 395
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 17811311
- Full Text :
- https://doi.org/10.1016/j.jallcom.2004.11.050