TEM investigation on microstructural characteristics in nanostructured Al-Mg alloy
SCIE
SCOPUS
- Title
- TEM investigation on microstructural characteristics in nanostructured Al-Mg alloy
- Authors
- Park, Y.S; Chung, K.H; Kim, N.J; Lavernia, E.J.
- Date Issued
- 2003-01
- Publisher
- MATERIALS RESEARCH SOCIETY SYMPOSIUM
- Abstract
- The microstructural evolution in a nanostructured Al-Mg alloy fabricated by cryogenic mechanical alloying (cryomilling), was investigated using transmission electron microscopy (TEM). Nanostructured Al-Mg powders were first synthesized by a mechanical alloying under liquid nitrogen media (cryomilling), and the powders were Subsequently degassed, hot isostatically pressed, and extruded into a full dense, bulk form. The results showed that Si containing phases and (Fe,Ni)Al intermetallics existed in as-extruded Al-Mg alloy. In addition, the extrusion temperature has a strong influence on the formation of microstructural anisotropy. A lower extrusion temperature yields a microstructure that is more anisotropic relative to that present at the higher extrusion temperature. More specifically, at the lower temperature, the nano-sized Al grains have a tendency to rotate towards the <111> direction, along the extrusion direction.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/35973
- DOI
- 10.1557/proc-791-q7.10
- ISSN
- 0272-9172
- Article Type
- Article
- Citation
- MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS, vol. 791, page. 209 - 214, 2003-01
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