Plastic Deformation of Nanocrystalline Zinc Investigated by Positron Annihilation Lifetime Spectroscopy
Plastic Deformation of Nanocrystalline Zinc Investigated by Positron Annihilation Lifetime Spectroscopy
复制标题
正电子湮灭寿命光谱研究纳米晶锌的塑性变形
DOI:
10.1088/0256-307x/30/5/057804
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发表时间:
2013-05
影响因子:
3.5
通讯作者:
Wang Zhu
中科院分区:
文献类型:
--
作者:
Zhou Kai;Li Hui;Wang Zhu
The plastic deformation of nanocrystalline Zn is investigated by positron annihilation lifetime spectroscopy. The deformation is carried out by exerting a pressure on the surface of the samples, which causes a thickness reduction of the samples. The different behavior of the relative thickness reduction with the increasing pressure between the nanocrystalline sample and the conventional bulk sample indicates that a distinct plastic deformation mechanism is operating in the nanocrystalline sample. The positron lifetime results confirm indirectly that the mechanism is grain boundary based, such as grain boundary sliding. Once the nanocrystalline sample is annealed at high temperature, the changes in the thickness reduction and the positron lifetime results become similar to those of the conventional bulk sample. Furthermore, vacancy clusters inside the nanocrystalline sample are found to be an impediment to the plastic deformation process.
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影响因子:
6.3
作者:
P. Kirkegaard;M. Eldrup;O. Mogensen;N. Pedersen
通讯作者:
P. Kirkegaard;M. Eldrup;O. Mogensen;N. Pedersen
影响因子:
2.8
作者:
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通讯作者:
Kailai Zhou;Hui Li;J. Pang;Zhu Wang
DOI:
10.1016/j.nima.2010.10.005
发表时间:
2011
期刊:
Nuclear Instruments and Methods in Physics Research A
影响因子:
--
作者:
Li Hui,ShaoYundong,ZhouKai,PangJingbiao,WangZhu
通讯作者:
Li Hui,ShaoYundong,ZhouKai,PangJingbiao,WangZhu
影响因子:
3.7
作者:
A. Vehanen;P. Hautojärvi;J. Johansson;J. Yli-kauppila;P. Moser
通讯作者:
A. Vehanen;P. Hautojärvi;J. Johansson;J. Yli-kauppila;P. Moser
影响因子:
24.2
作者:
H. Swygenhoven;J. Weertman
通讯作者:
H. Swygenhoven;J. Weertman