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SCI Article

Significant strengthening of nanocrystalline Ni sub-micron pillar by cyclic loading in elastic regim
Author Lee, Jung-A (Div Mat Sci & Engn); Lee, Dong-Hyun (Div Mat Sci & Engn); 장재일 (Div Mat Sci & Engn);
Corresponding Author Info Jang, JI (reprint author), Hanyang Univ, Div Mat Sci & Engn, Seoul 04763, South Korea.; Tsui, TY (reprint author), Univ Waterloo, Dept Mech Engn, 200 Univ Ave West, Waterloo, ON N21 3G1, Canada.
E-mail 씠硫붿씪 븘씠肄tttsui@uwaterloo.ca 씠硫붿씪 븘씠肄 jijang@hanyang.ac.kr
Document Type Article
Source SCRIPTA MATERIALIA Volume:140 Issue: Pages:31-34 Published:2017
Times Cited 0
External Information PDF 븘씠肄http://dx.doi.org/10.1016/j.scriptamat.2017.07.001
Abstract The influence of cyclic load, with the maximum stress well within the elastic regime, on the strength of nanocrystalline (nc) nickel was investigated through quasi-static compression experiments on cyclic-loaded sub-mu m-sized pillars, fabricated through electron beam lithography and electroplating. Results show that prior-cycling enhances both yield and flow strengths of nc Ni without significant loss in plasticity. Changes in strain-rate sensitivity and activation volume for deformation upon cycling were measured and utilized to discuss possible mechanisms responsible for the observed strengthening. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
Web of Science Categories Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
Funding National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2015R1A5A1037627, 2017R1A2B4012255]
Language English
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