標題: Quantitative evaluation of grain boundary sliding and its dependence on orientation and temperature in pure Zn
作者: Gokhale, Aditya
Sarvesha, R.
Huang, E-Wen
Lee, Soo Yeol
Prasad, Rajesh
Singh, Sudhanshu S.
Jain, Jayant
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Atomic force microscopy;Grain boundaries;Indentation and hardness;Metals and alloys
公開日期: 1-Jul-2019
摘要: In the present work, grain boundary sliding (GBS) has been studied for the grains exhibiting different orientations (for indentation parallel and perpendicular to < c > axis) at different temperatures (RT to 200 degrees C) using nanoindentation in pure Zn. Electron back scattered diffraction was utilized to determine the orientation of the indented grains and identify the deformation mechanism, whereas atomic force microscopy was utilized to systematically quantify the GBS. Results indicated that indentation perpendicular to < c > axis exhibits slip induced GBS, whereas the indentation parallel to < c > axis results in pure GBS. The amount of GBS was also found to be strongly dependent upon the orientation of the neighboring grain. Further, the contribution from GBS towards total stain was found to increase with an increase in temperature. (C) 2019 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.matlet.2019.03.025
http://hdl.handle.net/11536/151646
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2019.03.025
期刊: MATERIALS LETTERS
Volume: 246
起始頁: 24
結束頁: 27
Appears in Collections:Articles