Effect of a high angle grain boundary on deformation behavior of Al nanopillars. (October 2015)

• Record Type: Journal Article
• Authors: Kim, Youbin; Lee, Subin; Jeon, Jong Bae; Kim, Yong-Jae; Lee, Byeong-Joo; Oh, Sang Ho; Han, Seung Min
• Is Part Of: Scripta materialia. Volume 107(2015)
• Page Start: 5
• Page End: 9
• Publication Date: 2015-10
• Subjects: Aluminum -- Bicrystal pillar -- In situ TEM -- MD simulation -- Single-armed source; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.05.005
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract : The effect of inclusion of a grain boundary in nanopillar was studied using Al bicrystal with [3 4 3]/[ 13 17 ‾ 14 ] orientation. Ex situ compression results showed higher strengths in bicrystal pillars than in single crystal pillars, which is explained with respect to the reduced single-armed source length that was confirmed in the in situ TEM tests. Molecular dynamics simulations indicated that the grain boundary can assist in dislocation nucleations without resulting in dislocation pile-up at the boundary.