文献类型：期刊文献

英文题名：Plastic Flow Characteristics of Micro Single-Crystal Copper

作者：Li, Sheng[1]; Su, Ting[1]; Yan, Yabin[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2022

卷号：2300

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20223012391374)

语种：英文

外文关键词：Copper - Dislocations (crystals) - Plastic flow - Yield stress

摘要：In order to study the plastic flow characteristics of micro single-crystal Cu, an in-situ uniaxial loading test was carried out. The slip direction of the test is determined by the Schmidt factor, which is at 1μm～4μm. Within the micropillar size range, the sample has an obvious size effect. This is essentially due to the continuous proliferation of dislocations in the micropillar flowing out of the surface. The smaller the size, the more difficult it is to store dislocations, and the easier dislocations flow out. Therefore, the yield stress significantly increases with the increment of sample diameter. This study provides guidance for the reliability evaluation of microscale components based on the single-crystal Cu. ? Published under licence by IOP Publishing Ltd.