TEM Investigation on Microstructural Characteristics in Nanostructured Al-Mg Alloy Academic Article

abstract

• ABSTRACTThe 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.

authors

• Lavernia Borrego, Enrique

published proceedings

• MRS Advances

author list (cited authors)

• Park, Y. S., Chung, K. H., Kim, N. J., & Lavernia, E. J.

complete list of authors

• Park, Young S||Chung, Kyung H||Kim, Nack J||Lavernia, Enrique J

publication date

• 2003

publisher

• Springer Nature  Publisher

published in

• MRS Advances  Journal

keywords

• 40 Engineering
• 4016 Materials Engineering

Digital Object Identifier (DOI)

• 10.1557/proc-791-q7.10

start page

• q7.10

volume

• 791

URL

• http://dx.doi.org/10.1557/proc-791-q7.10