Quantification of deformation microstructure at ultra-low tensile strain in pure Al prepared by spark plasma sintering

38th Risø International Symposium on Materials Science

Zhang, C.L.^1 ; Zhang, Y.B.^2 ; Wul, G.L.^3 ; Liu, W.^4 ; Juul Jensen, D.^2 ; Godfrey, A.^1

Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing

100084, China^1

Section for Materials Science and Advanced Characterization, Department of Wind Energy, Technical University of Denmark, Riso Campus, Roskilde

4000, Denmark^2

College of Materials Science and Engineering, Chongqing University, Chongqing

400045, China^3

Advanced Photon Source, Argonne National Laboratory, Argonne

IL

60439, United States^4

关键词: Crystallographic orientations;    Deformation behaviour;    Deformation microstructure;    Deformation pattern;    Diffraction techniques;    Larger deformations;    Orientation measurements;    X-ray synchrotron radiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/219/1/012050/pdf
DOI  :  10.1088/1757-899X/219/1/012050

来源: IOP

【 摘 要 】

A sample of Al with grain size of 5.1 μm, prepared by spark plasma sintering, was deformed to a nominal strain of 0.35% under exposure to X-ray synchrotron radiation, allowing spatially resolved orientation measurements to be made during loading by use of a micro-diffraction technique. A significant heterogeneity in the deformation pattern between grains was observed. A statistical analysis shows that grain deformation depends more on crystallographic orientation than on grain size, with grains with tensile axis lying towards the - border of the unit triangle tending to undergo larger deformation. Other possible reasons for the different deformation behaviour between individual grains are briefly discussed.