Deformation behavior in bulk nanocrystalline-ultrafine aluminum :in situ evidence of plastic strain recovery.
Journal Article
·
· Scr. Materialia
The plastic deformation behavior of bulk nanocrystalline-ultrafine Al was investigated under in situ compressive loading using high-energy synchrotron X-ray diffraction. After one loading-unloading cycle, to 2% strain, we find reversible peak broadening within the nanocrystalline grain volume and tensile residual stress (80 MPa) within the ultrafine grain volume. Upon unloading, we detect recovery of 12% of the plastic strain, and this recovery increases up to 28% at even higher applied deformations to 4%.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1001616
- Report Number(s):
- ANL/XSD/JA-63224; TRN: US1100426
- Journal Information:
- Scr. Materialia, Vol. 60, Issue 7 ; Apr. 2009
- Country of Publication:
- United States
- Language:
- ENGLISH
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