Microstructural Evolution of Al-Zn-Mg-Cu Alloys in Accordance with Homogenization Time

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 98
  • Download : 0
The microstructural evolution of Al-Zn-Mg-Cu alloys has been investigated for the homogenization time effect on the texture, grain orientation and dislocation density. The Al-Zn-Mg-Cu alloys were casted and homogenized for 4, 8, 16 and 24 hours. Electron backscatter diffraction (EBSD) analysis was conducted to characterize the microstructural behavior. Micropillars were fabricated using focused ion beam (FIB) milling in grains of specific crystallographic orientations. Coarse precipitations in the grain boundaries are S (Al2CuMg) and T (Al2Mg3Zn3) phases verified by scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) observation. With increasing homogenization time, equi-axed cell sizes increased. The volume fraction of S and T phases decreased with the diffusion of atomic elements into matrix. The Vickers hardness and tensile strength values decreased with homogenization temperature. The micropillar compression analysis was compared to macro tensile test results to understand the size effect and strain burst phenomenon on the mechanical properties of Al-Zn-Mg-Cu alloys.
Publisher
AMER SCIENTIFIC PUBLISHERS
Issue Date
2020-11
Language
English
Article Type
Article
Citation

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.20, no.11, pp.6890 - 6896

ISSN
1533-4880
DOI
10.1166/jnn.2020.18808
URI
http://hdl.handle.net/10203/275940
Appears in Collection
NE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0