Characterization of microstructures near grain boundary in hot deformed AA 3104 aluminum alloy
AA 3104 aluminium alloy was deformed at a temperature of 510 deg. C and at a strain rate of 5 s{sup -1} to strains of 0.14 and 0.53 by plane strain compression. The microstructure and orientation gradient in the vicinity of grain boundaries were investigated using transmission electron microscopy. The results show that there is a significant difference in microstructures between the grain-boundary region and the grain interior, depending on the orientations of the neighbouring grains. The grain-boundary region usually displays smaller cells or subgrains and higher misorientation angles than the grain interior. A high orientation gradient is observed near the grain boundary, which corresponds to the difference in deformation microstructures. - Research Highlights: {yields} Grain-boundary region displays finer microstructure and higher misorientation. {yields} Grain-boundary region has higher orientation gradients than the grain interior. {yields} Additional slip systems affect the orientation of dislocation boundaries.
- OSTI ID:
- 22063650
- Journal Information:
- Materials Characterization, Vol. 62, Issue 1; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
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