| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1449627 | Acta Materialia | 2009 | 9 Pages |
Abstract
The cyclic deformation behavior of ultrafine-grained (UFG) Ni samples synthesized by the electrodeposition method was studied. Different from those made by severely plastic deformation, the UFG samples used in this study are characterized by large-angle grain boundaries. Behaviors from nanocrystalline Ni and coarse-grained Ni samples were compared with that of ultrafine-grained Ni. With in situ neutron diffraction, unusual evolutions of residual lattice strains as well as cyclic hardening and softening behavior were demonstrated during the cyclic deformation. The microstructural changes investigated by TEM are discussed with respect to the unusual lattice strain and cyclic hardening/softening.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S. Cheng, J. Xie, A.D. Stoica, X.-L. Wang, J.A. Horton, D.W. Brown, H. Choo, P.K. Liaw,