The near-surface deformation of equal-channel angular extruded (ECAE) pure aluminum was investigated using the micro-indentation technique. Compared with fully annealed Al samples, there is a distinguishable difference in the indentation deformation. The unloading slope of the ECAE deformed Al after a short unloading period was found to be less than that of the annealed samples due to plastic recovery. Work hardening was observed, which depended on the history of local deformation. A new relationship between the plastic energy dissipated in the indentation and the applied load was derived, which is supported by the experimental results.
|Number of pages||6|
|Journal||Journal of Materials Research|
|State||Published - Apr 2004|
Bibliographical noteFunding Information:
This research is supported by the National Science Foundation through Grant No. DMR-0211706, monitored by Dr. Guebre Tessema and Dr. Bruce A. Mac-Donald, and Kentucky Science and Engineering Foundation through Grant No. KSEF-02-RDE-003.
ASJC Scopus subject areas
- Materials Science (all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering