GRAIN BOUNDARY AND DISLOCATION MEDIATED DEFORMATION MECHANISMS IN NANOCRYSTALLINE METALS

Manu Mitra

VOLUME01ISSUE03

ABSRACT


Nano-crystalline metals performance of defects and mechanisms of plastic deformation and conventional polycrystalline are completely divergent in behavior and its perfor-mance. This paper discusses about grain boundary and dislocation mediated deformation me-chanisms in Nano-crystalline metals. The plots are for burger vectors of single value, Gaussian and uniform characteristics considering various parameters such as elastic constants, plasticity, loading condition and uncertainty quantification.

KEYWORDS


Grain boundary, Nano-crystalline metals, deformation, Burger vectors

REFERENCES


1 Edelstein, A. S. (2001). Nanomaterials. In Encyclopedia of Materials: Science and Technology (pp. 5916–5927). Elsevier. https://doi.org/10.1016/b0-08-043152-6/01031-7

2 Gutkin, M. Y. (2011). Elastic and plastic deformation in Nano-crystalline metals. In Nanostructured Metals and Alloys (pp. 329–374). Elsevi-er. https://doi.org/10.1533/9780857091123.3.329.

3 Ovid’ko, I. A. (2011). Enhanced ductility and its Mechanisms in Nano-crystalline me-tallic materials. In Nanostructured Metals and Alloys (pp. 430–458). Els-vier. https://doi.org/10.1533/9780857091123.3.430.

4 Milligan, W. W. (2003). Mechanical Behavior of Bulk Nano-crystalline and Ultrafine-grain Metals.In Comprehensive Structural Integrity (pp. 529–550).Elsvier. https://doi.org/10.1016/b0-08-043749-4/08145-3.

5 Martin Hunt; Lei Cao; Alejandro Strachan; Marisol Koslowski (2016), “Nano-Plasticity Lab,” https://nanohub.org/resources/nanoplasticity. (DOI: 10.4231/D3KD1QM6K).

6 Zhang, L., Shibuta, Y., Huang, X., Lu, C., & Liu, M. (2019). Grain boundary induced deformation mechanisms in Nano-crystalline Al by molecular dynamics simulation: From interatomic potential perspective. Computational Materials Science, 156, 421-433. doi:10.1016/j.commatsci.2018.10.021

7 Li, Xiaoyan& Wei, Yujie& Yang, Wei &Gao, Huajian. (2009). Competing grain-boundary- and dislocation-mediated mechanisms in plastic strain recovery in nanocrystalline aluminum. Proceedings of the National Academy of Sciences of the United States of America. 106. 16108-13. 10.1073/pnas.0901765106.

AUTHOR’S AFFILIATION


MANU MITRA
Alumnus of University of Bridgeport, Department of Electrical Engineering, US.

Scroll to Top