Kinetic, volumetric and structural effects induced by liquid Ga penetration into ultrafine grained Al
Kinetic, volumetric and structural effects induced by liquid Ga penetration into ultrafine grained Al
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液态Ga渗透到超细晶粒Al中引起的动力学、体积和结构效应
DOI：
10.1016/j.actamat.2015.07.061
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发表时间：
2015
期刊：
影响因子：
9.4
通讯作者：
G. Wilde
中科院分区：
文献类型：
--
作者：
M. Naderi;M. Peterlechner;E. Schafler;S. Divinski;G. Wilde
采用等温流变仪、电子显微镜、原子力显微镜和X射线衍射等方法研究了高压扭转大塑性变形制备的超细晶铝中液态Ga的渗透动力学、体积效应和结构效应。严重的塑性变形改变了杂质的分布，并通过透射电子显微镜揭示了它们的偏析。观察到UFG Al的两阶段长度变化，这可以通过Ga的晶界偏聚引起的膨胀和沉淀和再结晶引起的收缩的抵消作用来解释。在电子显微镜下用“首次出现”法原位研究了Ga在UFG Al中的液相渗透动力学，其时间尺度与引起体积变化的时间尺度一致。
Kinetic, volumetric and structural effects induced by penetration of liquid Ga in ultrafine grained (UFG) Al produced by severe plastic deformation using high-pressure torsion were studied by isothermal dilatometric measurements, electron microscopy, atomic force microscopy and X-ray diffraction. Severe plastic deformation changed the distribution of impurities and their segregation was revealed by transmission electron microscopy. Two-stage length changes of UFG Al were observed which are explained by counteracting effects of expansion due to grain boundary segregation of Ga and contraction due to precipitation and recrystallization. After applying Ga, the kinetics of the liquid Ga penetration in UFG Al is studied in-situ in the electron microscope by the “first appearance” method and the time scales are in agreement with those inducing the volumetric changes.
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影响因子：
9.4
作者：
G. Reglitz;B. Oberdorfer;Nina Fleischmann;J. Kotzurek;S. Divinski;W. Sprengel;G. Wilde;Roland Wurschum
通讯作者：
G. Reglitz;B. Oberdorfer;Nina Fleischmann;J. Kotzurek;S. Divinski;W. Sprengel;G. Wilde;Roland Wurschum
影响因子：
9.4
作者：
Divinski, Sergiy V.;Reglitz, Gerrit;Wilde, Gerhard
通讯作者：
Wilde, Gerhard
影响因子：
9.4
作者：
H. Rösner;C. Kübel;Y. Ivanisenko;L. Kurmanaeva;S. Divinski;M. Peterlechner;G. Wilde
通讯作者：
H. Rösner;C. Kübel;Y. Ivanisenko;L. Kurmanaeva;S. Divinski;M. Peterlechner;G. Wilde
影响因子：
2.2
作者：
Kobler, A.;Kashiwar, A.;Kuebel, C.
通讯作者：
Kuebel, C.
影响因子：
3.2
作者：
Fiebig, Jochen;Divinski, Sergiy;Wilde, Gerhard
通讯作者：
Wilde, Gerhard