Atomic-scale studies on the effect of boundary coherency on stability in twinned Cu

Rongmei Niu; Ke Han; Yi Feng Su; Vincent J. Salters

doi:10.1063/1.4861610

Atomic-scale studies on the effect of boundary coherency on stability in twinned Cu

Rongmei Niu, Ke Han, Yi Feng Su, Vincent J. Salters

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The stored energy and hardness of nanotwinned (NT) Cu are related to interaction between dislocations and {111}-twin boundaries (TBs) studied at atomic scales by high-angle annular dark-field scanning transmission electron microscope. Lack of mobile dislocations at coherent TBs (CTBs) provides as-deposited NT Cu a rare combination of stability and hardness. The introduction of numerous incoherent TBs (ITBs) reduces both the stability and hardness. While storing more energy in their ITBs than in the CTBs, deformed NT Cu also exhibits high dislocation density and TB mobility and therefore has increased the driving force for recovery, coarsening, and recrystallization.

Original language	English
Article number	011913
Journal	Applied Physics Letters
Volume	104
Issue number	1
DOIs	https://doi.org/10.1063/1.4861610
State	Published - Jan 6 2014
Externally published	Yes

Access to Document

10.1063/1.4861610

Cite this

@article{0271c51ed008458cad1ec04ade83a51c,

title = "Atomic-scale studies on the effect of boundary coherency on stability in twinned Cu",

abstract = "The stored energy and hardness of nanotwinned (NT) Cu are related to interaction between dislocations and \{111\}-twin boundaries (TBs) studied at atomic scales by high-angle annular dark-field scanning transmission electron microscope. Lack of mobile dislocations at coherent TBs (CTBs) provides as-deposited NT Cu a rare combination of stability and hardness. The introduction of numerous incoherent TBs (ITBs) reduces both the stability and hardness. While storing more energy in their ITBs than in the CTBs, deformed NT Cu also exhibits high dislocation density and TB mobility and therefore has increased the driving force for recovery, coarsening, and recrystallization.",

author = "Rongmei Niu and Ke Han and Su, \{Yi Feng\} and Salters, \{Vincent J.\}",

year = "2014",

month = jan,

day = "6",

doi = "10.1063/1.4861610",

language = "English",

volume = "104",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "1",

}

TY - JOUR

T1 - Atomic-scale studies on the effect of boundary coherency on stability in twinned Cu

AU - Niu, Rongmei

AU - Han, Ke

AU - Su, Yi Feng

AU - Salters, Vincent J.

PY - 2014/1/6

Y1 - 2014/1/6

N2 - The stored energy and hardness of nanotwinned (NT) Cu are related to interaction between dislocations and {111}-twin boundaries (TBs) studied at atomic scales by high-angle annular dark-field scanning transmission electron microscope. Lack of mobile dislocations at coherent TBs (CTBs) provides as-deposited NT Cu a rare combination of stability and hardness. The introduction of numerous incoherent TBs (ITBs) reduces both the stability and hardness. While storing more energy in their ITBs than in the CTBs, deformed NT Cu also exhibits high dislocation density and TB mobility and therefore has increased the driving force for recovery, coarsening, and recrystallization.

AB - The stored energy and hardness of nanotwinned (NT) Cu are related to interaction between dislocations and {111}-twin boundaries (TBs) studied at atomic scales by high-angle annular dark-field scanning transmission electron microscope. Lack of mobile dislocations at coherent TBs (CTBs) provides as-deposited NT Cu a rare combination of stability and hardness. The introduction of numerous incoherent TBs (ITBs) reduces both the stability and hardness. While storing more energy in their ITBs than in the CTBs, deformed NT Cu also exhibits high dislocation density and TB mobility and therefore has increased the driving force for recovery, coarsening, and recrystallization.

UR - https://www.scopus.com/pages/publications/84892151545

U2 - 10.1063/1.4861610

DO - 10.1063/1.4861610

M3 - Article

AN - SCOPUS:84892151545

SN - 0003-6951

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 1

M1 - 011913

ER -

Atomic-scale studies on the effect of boundary coherency on stability in twinned Cu

Abstract

Access to Document

Other files and links

Fingerprint

Cite this