Evaluation of Stored Energy from Microstructure of Multi-component Nanostructured Cu

J Mater Sci Technol ›› 2012, Vol. 28 ›› Issue (4): 289-293.

• Nanomaterials and Nanotechnology • Next Articles

Evaluation of Stored Energy from Microstructure of Multi-component Nanostructured Cu

Feng Yan, Hongwang Zhang

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Received:2011-07-13 Revised:2011-11-23 Online:2012-04-30 Published:2012-04-24
Contact: hongwang zhang
Supported by:
the Danish National Research Foundation and the National Natural Science Foundation of China (Grant No. 50911130230)
MOST international S&T project (2010DFB54010)

Abstract

Abstract: A polycrystalline Cu of 99.995% purity has been deformed by dynamic plastic deformation at liquid nitrogen temperature to a strain of 2.1 (LNT-DPD Cu). Three distinct regions that are dominated by dislocation slip, shear banding and nanotwinning, form a multi-component nanostructure. The microstructure of each region has been quantified by transmission electron microscopy assisted by Kikuchi line analysis. Based on the structural parameters the stored energy of each region was evaluated, and the total energy can be assumed to be a linear additivity of that in each region weighted by the respective volume fraction. A microstructure based evaluation of the stored energy of multi-component nanostructure has been proposed.

Key words: Stored energy, Cu, Dynamic plastic deformation, Transmission electron microscopy

Feng Yan, Hongwang Zhang. Evaluation of Stored Energy from Microstructure of Multi-component Nanostructured Cu[J]. J Mater Sci Technol, 2012, 28(4): 289-293.

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Evaluation of Stored Energy from Microstructure of Multi-component Nanostructured Cu

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