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%.

Deformation behaviour in bulk nanocrystalline-ultrafine aluminum: in situ evidence of plastic strain recovery / Lonardelli, Ivan; J., Almer; Ischia, Gloria; Menapace, Cinzia; Molinari, Alberto. - In: SCRIPTA MATERIALIA. - ISSN 1359-6462. - STAMPA. - 60:7(2009), pp. 520-523.

Deformation behaviour in bulk nanocrystalline-ultrafine aluminum: in situ evidence of plastic strain recovery

Lonardelli, Ivan;Ischia, Gloria;Menapace, Cinzia;Molinari, Alberto
2009

Abstract

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%.
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Lonardelli, Ivan; J., Almer; Ischia, Gloria; Menapace, Cinzia; Molinari, Alberto
Deformation behaviour in bulk nanocrystalline-ultrafine aluminum: in situ evidence of plastic strain recovery / Lonardelli, Ivan; J., Almer; Ischia, Gloria; Menapace, Cinzia; Molinari, Alberto. - In: SCRIPTA MATERIALIA. - ISSN 1359-6462. - STAMPA. - 60:7(2009), pp. 520-523.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/77193
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