Muon Spin Relaxation and Positron Annihilation Spectroscopy Studies of Natural Aging in Al-Mg-Si Alloys
Muon Spin Relaxation and Positron Annihilation Spectroscopy Studies of Natural Aging in Al-Mg-Si Alloys
复制标题
Al-Mg-Si合金自然时效的μ子自旋弛豫和正电子湮没光谱研究
DOI:
10.1007/978-3-319-48761-8_7
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
R. Holmestad
中科院分区:
文献类型:
--
作者:
S. Wenner;K. Matsuda;K. Nishimura;J. Banhart;T. Matsuzaki;D. Tomono;F.L. Pratt;M. Liu;Y. Yan;C.D. Marioara;R. Holmestad
Muon spin relaxation (µSR) is sensitive to magnetic fields from atomic nuclei, making it suitable for studying vacancies and solute clustering inside aluminium alloys. Positron annihilation spectroscopy (PAS) gives complimentary information about the electron density. We have conducted µSR and PAS experiments on an Al alloy with 1.07 at.% Mg and 0.53 at.% Si during natural aging after solution heat treatment. Three stages of positron lifetime change are visible, while the muon depolarization shows a decrease through the first two of these. This is explained on the basis of vacancy migration, vacancy-solute binding and solute clustering.
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