Local strain distributions in partially recrystallized copper determined by in situ tensile investigation

17th International Conference on Textures of Materials

材料科学;物理学

Lin, F.X.^1 ; Ubhi, H.S.^2 ; Petrenec, M.^3 ; Zhang, Y.B.^1 ; Jensen, D. Juul^1

Department of Wind Energy, Technical University of Denmark, Risø Campus, Roskilde

4000, Denmark^1

Oxford Instruments NanoAnalysis, Halifax Road, High Wycombe

HP12 3SE, United Kingdom^2

Tescan Orsay Holding, A.S., Libuina t. 21, Brno

623 00, Czech Republic^3

关键词: Digital image correlations;    Electron back scatter diffraction;    In-situ tensile;    Local strains;    Normal strain;    Recrystallized grains;    Tensile directions;    Uniaxial tensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012103/pdf
DOI  :  10.1088/1757-899X/82/1/012103

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A partially recrystallized copper sample produced by cold-rolling and annealing was deformed in situ by uniaxial tension in a scanning electron microscope, and electron backscatter diffraction data were collected before and after deformation to certain strains. The local strain distributions are quantified using digital image correlation. Distributions of the normal strain along the tensile direction (Εxx) are shown in this paper. The recrystallized grains are found to deform more than the remaining unrecrystallized matrix. When Εxxis averaged along lines perpendicular to the tensile direction, significant variation are observed, which may be related to the local recrystallized volume fraction.