Journal
MICRON
Volume 124, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.micron.2019.102711
Keywords
Strain field; High-resolution electron microscopy (HREM); Micromechanical modeling; Aluminum alloys
Categories
Funding
- National Natural Science Foundation of China [11762014, 11672140, 11562016, 51764043]
- Inner Mongolia Autonomous Region Science and Technology Major Special Projects
- Natural Science Foundation of Inner Mongolia Autonomous Region [2018MS01013, 2018MS05056]
- Higher school Science Foundation of inner Mongolia [NJZZ16082]
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The Guinier-Preston (GP) II zone in an Al-Zn-Mg-Cu alloy was investigated by using a high-resolution electron microscopy (HREM). We used Geometric Phase Analysis (GPA) technique to measure the experimental HREM image and the simulated HREM image to obtain the strain distribution maps. The results show converging strain fields in the GP II zone, and the maximum compressive strain can reach - 7.2% and - 6.7%, respectively. The distribution of the experimental strain field was in consistence with that of the simulation result. The average strain of the alloy measured using XRD is 0.191%.
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