nanotwinned copper

instability induced by incoherent twin boundary in nanotwinned copper

Submitted by Rongmei niu on Fri, 02/07/2014 - 12:20

1. Strain hardening and softening in nanotwinned Cu:

Nanotwinned Cu foils with about 99% coherent twin boundaries (TBs) among all the boundaries were made. These coherent

TBs, with an average spacing of 25 nm, were engineered approximately parallel to foil surfaces. Low plane-strain deformation

enhances the hardness by refining microstructure and introducing dislocations. High plane-strain deformation results in crystallographic

lattice rotation and reaction between dislocations and coherent TBs, and induces incoherent TBs, thus twin coarsening and

what's detwinning

Submitted by Rongmei niu on Wed, 09/19/2012 - 18:21

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nanotwinned copper

Now I am doing some work about nanotwinned copper, and don't understand what's the nature of "detwinning".

Could any disappearance of the original nanotwin structure and the formation of a single grain or a new twin structure with TBs in a different orientation and/or with different TB spacing be called detwinning?

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