期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2016.12.005
关键词
Multilayered composite; Basal/prismatic interface; Phase transformation; Molecular dynamics simulation
类别
资金
- National Natural Science Foundation of China [11372256, 11527803, 11572259]
- 111 project [B07050]
- Program for International Cooperation and Exchanges of Shaanxi Province [2016KW-049]
Molecular dynamics simulations are performed,to investigate the effects of layer spacing and temperature on the deformation mechanism of Ti(0001)/Al(111) multilayered composite. The results indicate that the interface rotation driven by local stress concentration dominates the plastic deformation in the sample with smaller layer thickness at both 0.01 K and 300 K. The confined layer slip of dislocations in Al layer is observed, while basal/prismatic interface formation and the transformation of hcp-Ti to fcc-Ti are presented in Ti layer in the samples with larger thickness at 0.01 K. The results also show that the confined layer slip of dislocations and necking in Al layer is the underlying deformation mechanism in the samples with larger layer thickness at 300 K. We have also presented an in-depth discussion of relative deformation mechanisms in this work.
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