首页|Studying GPI zones in Al-Zn-Mg alloys by 4D-STEM
Studying GPI zones in Al-Zn-Mg alloys by 4D-STEM
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2021 The AuthorsA new methodology has been developed to study the fine details of GP zones in age-hardenable aluminium alloys. It is complementary to atomic resolution high-angle annular dark-field scanning transmission electron microscopy imaging, and combines scanning precession electron diffraction with diffraction simulations. To evaluate the method, data was collected from an Al-Zn-Mg alloy in a condition with a dense distribution of GPI zones. Diffraction patterns were recorded in the 〈001〉Al orientation, capturing GPI zones in three projections: along the unique [001]GPI axis, and along the two other mutually orthogonal orientations. The GPI zones viewed along [001]GPI revealed how the truncated octahedron units of the GPI zones were connected in multi-unit GP zones, while the two orientations normal to [001]GPI highlight the internal structure. The stability of the atomic models developed based on the experimental results was verified by density functional theory calculations.
4D-STEMAluminium alloysGP-zonesNatural ageingPhase mappingTransmission electron microscopy (TEM)
Thronsen E.、Frafjord J.、Friis J.、Wenner S.、Marioara C.D.、Andersen S.J.、Holmestad R.
展开 >
Department of Physics Norwegian University of Science and Technology (NTNU)
NSTL
Elsevier
