RAPID COMMUNICATION: Strengthening mechanism for high-strain-rate superplasticity in nanocrystalline materials

Details RAPID COMMUNICATION: Strengthening mechanism for high-strain-rate superplasticity in nanocrystalline materials RAPID COMMUNICATION: Strengthening mechanism for high-strain-rate superplasticity in nanocrystalline materials

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jphd...36l..47g&link_type=abstract

Journal of Physics D: Applied Physics, Volume 36, Issue 12, pp. L47-L50 (2003).

Physics

3

Scientific paper

A theoretical model is suggested that describes the strengthening of nanocrystalline materials under superplastic deformation due to the effects of triple junctions of grain boundaries (GBs) as obstacles for GB sliding. In the framework of the model, dependences of the yield stress for the GB sliding on parameters of defects and triple junctions are revealed. The results of the model account for experimental data from nanocrystalline materials exhibiting superplasticity, reported in the literature.

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