Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9804224 | Journal of Alloys and Compounds | 2005 | 5 Pages |
Abstract
The microstructure and tensile deformation characteristics in the commercial 5083 Al alloy after equal channel angular pressing (ECAP) at 373 and 473Â K were investigated and compared with those of one reannealed at 473Â K for 1Â h after ECAP at 373Â K. All specimens revealed nano-structure with grains of â¼300Â nm and no distinct grain boundaries except the reannealed alloy. The strength in the alloy pressed at 373Â K was much higher than that of as-received alloy but the elongation to failure was significantly smaller, while, in case of pressing at 473Â K, the improvement in strength was found concurrent with slight work hardening, without sacrificing much of the elongation. The tensile properties of the reannealed alloy were in between those of ones pressed at 373 and 473Â K. These tensile deformation characteristics were analyzed based on the observations of deformed microstructure and fracture surface by TEM and FE-SEM, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Si-Young Chang, Byong-Du Ahn, Sung-Kil Hong, Shigeharu Kamado, Yo Kojima, Dong Hyuk Shin,