TY - JOUR
T1 - Hardness and microstructural variation of Al-Mg-Mn-Sc-Zr alloy
AU - Ikeshita, Sumiha
AU - Strodahs, Ansis
AU - Saghi, Zineb
AU - Yamada, Kazuhiro
AU - Burdet, Pierre
AU - Hata, Satoshi
AU - Ikeda, Ken ichi
AU - Midgley, Paul A.
AU - Kaneko, Kenji
N1 - Funding Information:
We would like to acknowledge Kobe Steel Ltd. for providing Al–Mg–Mn and Al–Mg–Mn–Sc–Zr alloy samples for the experiment. The present work was a partly supported by Japan Aluminium Association. The research leading to these results has received funding from the European Union Seventh Framework Programme under Grant Agreement 312483-ESTEEM2 (Integrated Infrastructure Initiative—I3), as well as from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007–2013)/ERC grant agreement 291522-3DIMAGE.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - Variations of Vickers hardness were observed in Al-Mg-Mn alloy and Al-Mg-Mn-Sc-Zr alloy at different ageing times, ranging from a peak value of 81.2 HV at 54ks down to 67.4 HV at 360ks, below the initial hardness value, 71.8 HV at 0ks for the case of Al-Mg-Mn-Sc-Zr alloy. Microstructures of samples at each ageing stage were examined carefully by transmission electron microscopes (TEMs) both in two-dimensions and three-dimensions. The presence of different types, densities, and sizes of particles were observed dispersed spherical Al3Sc1-xZrx and also block-shaped Al3Sc precipitates growing along <100>Al with facets {100} and {110} of the precipitates. TEM analysis both in two-dimensions and three-dimensions, performed on various samples, confirmed the direct correlation between the hardness and the density of Al3Sc.
AB - Variations of Vickers hardness were observed in Al-Mg-Mn alloy and Al-Mg-Mn-Sc-Zr alloy at different ageing times, ranging from a peak value of 81.2 HV at 54ks down to 67.4 HV at 360ks, below the initial hardness value, 71.8 HV at 0ks for the case of Al-Mg-Mn-Sc-Zr alloy. Microstructures of samples at each ageing stage were examined carefully by transmission electron microscopes (TEMs) both in two-dimensions and three-dimensions. The presence of different types, densities, and sizes of particles were observed dispersed spherical Al3Sc1-xZrx and also block-shaped Al3Sc precipitates growing along <100>Al with facets {100} and {110} of the precipitates. TEM analysis both in two-dimensions and three-dimensions, performed on various samples, confirmed the direct correlation between the hardness and the density of Al3Sc.
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U2 - 10.1016/j.micron.2015.12.002
DO - 10.1016/j.micron.2015.12.002
M3 - Article
AN - SCOPUS:84952769645
SN - 0968-4328
VL - 82
SP - 1
EP - 8
JO - Micron and Microscopica Acta
JF - Micron and Microscopica Acta
ER -