TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Wang, F.
A1  - Zhao, J.
A1  - Huang, P.
A1  - Schneider, Andreas S.
A1  - Lu, T. J.
A1  - Xu, K. W.
T1  - Effects of free surface and heterogeneous residual internal stress on stress-driven grain growth in nanocrystalline metals
JF  - Journal of Nanomaterials
N2  - By reevaluating the experimental study of Zhang et al. (2005), here we demonstrate that the extent of grain growth, previously proposed to be solely driven by external stress, may have been significantly overestimated. A new physical mechanism, termed as free surface assisted stress-driven grain growth (or self-mechanical annealing), is proposed and discussed in detail. Representing the cooperative effect of free surface and heterogeneous residual internal stress, the proposed mechanism is consideredmore favorable than the traditional pure stress-driven mechanism for interpreting the abnormal grain growth widely observed in deforming nanocrystalline metals at room temperature.
Y1  - 2013
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:291:415-4840
SN  - 1687-4110
SS  - 1687-4110
U6  - https://doi.org/10.1155/2013/934986
DO  - https://doi.org/10.1155/2013/934986
VL  - 2013
SP  - 934986
ER  -