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电子风
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  electron wind
     High density electropulsing and vacuum annealing treatments of amorphous alloy Fe 73 Ni 5Si 8B 14 have been carried out. The microstructural change and crystallization behavior after treating were investigated by Mssbauer spectroscopy and TEM techniques. The experimental results show that the “electron wind” induced by high density current promotes the structure of amorphous alloy to be more relaxed and crystallized as compared with annealing treatment.
     对非晶Fe73Ni5Si8B14合金分别进行了高密度脉冲电流及真空退火处理.用穆斯堡尔谱学与透射电子显微镜技术研究了处理后非晶的微观结构与晶化行为.实验结果表明,与退火处理相比,高密度脉冲电流产生的“电子风”促进了非晶合金的结构弛豫与晶化.随电流密度显著增加,这一促进效应进一步增强
短句来源
     Because in super-plastic deformation, the deformation taking place in intergranular regime contributed most out of the total amount of deformation, the electron wind enhanced dislocation mobility at the grain boundaries could play a more important role in improving the elongation rate of 7475 aluminum alloy.
     由于在超塑性变形中,晶界的变形占据主导地位,电子风在晶界处推动位错的运动,比在晶内的作用更能有效地提高7475铝合金的伸长率。
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  相似匹配句对
     The Wind
    
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     Wind
    
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     Electronic Mamufacturing
     电子制造
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     Electronic bone conduction hearing aid
     电子骨导助听器
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     Research on Heatsinking Mode of the Power Electronic Equipment with Forced Cooling
     电力电子装置强制冷散热方式的研究
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  electron wind
The origin of this effect in point contacts is associated with electromigration of the oxygen, driven by the electric field as well as by the current-induced "electron wind".
      
In this paper, expressions are developed for the electron wind force on the atoms near grain boundaries, and they are written in terms of thermodynamic variables: the boundary specific volume expansion and specific resistivity.
      
Quantum mechanical generalization of the balistic electron wind theory
      
The Fiks' quasiclassical theory of the electron wind force is quantum mechanically generalized.
      
Within the framework of this generalization the space dependence of the electron wind force is calculated in the vicinity of an interface between two media.
      
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High density electropulsing and vacuum annealing treatments of amorphous alloy Fe 73 Ni 5Si 8B 14 have been carried out. The microstructural change and crystallization behavior after treating were investigated by Mssbauer spectroscopy and TEM techniques. The experimental results show that the “electron wind” induced by high density current promotes the structure of amorphous alloy to be more relaxed and crystallized as compared with annealing treatment. And, The accelerating effect is further...

High density electropulsing and vacuum annealing treatments of amorphous alloy Fe 73 Ni 5Si 8B 14 have been carried out. The microstructural change and crystallization behavior after treating were investigated by Mssbauer spectroscopy and TEM techniques. The experimental results show that the “electron wind” induced by high density current promotes the structure of amorphous alloy to be more relaxed and crystallized as compared with annealing treatment. And, The accelerating effect is further enhanced with an increase of current density.

对非晶Fe73Ni5Si8B14合金分别进行了高密度脉冲电流及真空退火处理.用穆斯堡尔谱学与透射电子显微镜技术研究了处理后非晶的微观结构与晶化行为.实验结果表明,与退火处理相比,高密度脉冲电流产生的“电子风”促进了非晶合金的结构弛豫与晶化.随电流密度显著增加,这一促进效应进一步增强

The present research results about the electro plastic and electro superplastic effect of metals are summarized in this paper. It concludes that the main mechanism of producing these effects are due to the enhancement of the defect mobility(mainly dislocation) aroused by the force of the“electron wind” exerted by the drift electrons, and therefore the increment of plasticity of metals occurs.

综合论述了金属的电致塑性和电致超塑性效应的研究状况.说明产生这些效应的主要原因是由于漂移电子所产生的电子风提高了金属中缺陷(主要是位错)的迁移率,从而使金属的塑性得以提高

Direct current pulses were introduced along the stretching direction into the 7475 aluminum specimens which were undergoing superplastic deformation. TEM (transmission electron microscopy) observations revealed that the intragranular dislocations were arranging along the direction of flowing electrons, and the density of dislocations inside the grains was increased as well. The reason that arouses this unique dislocation morphology is attributed to the existence of electron wind force (similar to the external...

Direct current pulses were introduced along the stretching direction into the 7475 aluminum specimens which were undergoing superplastic deformation. TEM (transmission electron microscopy) observations revealed that the intragranular dislocations were arranging along the direction of flowing electrons, and the density of dislocations inside the grains was increased as well. The reason that arouses this unique dislocation morphology is attributed to the existence of electron wind force (similar to the external stress) , which is created by the current pulses. This electron wind force is exerted on dislocation segments and accelerates the sliding of dislocations. Because most of the dislocations are anchored by the precipitated-phase particles, the free ends of dislocations are pushed moving and turned around with these particles as their centers, until the dislocation lines are settled parallel to the direction of current. In addition, the electron wind force will also enhance the mobility of dislocation groups, that are blocked at the sites of depositional particles, leading to the accruement of dislocations and increases the density of intragranular dislocations.

在7475铝合金超塑性变形过程中沿拉伸方向对试样通以脉冲电流,对变形后试样的透射电镜观察发现晶内位错呈顺电子流动方向排列的形态,而且位错密度有增加的迹象.分析认为这种位错形态的产生源于由脉冲电流而引起的电子风对位错段产生的一个类似于外加应力的电子风力,此力促进了位错的运动.由于大部分位错被合金中的沉淀相粒子钉扎住,因此位错的自由端在电子风力的推动下绕沉淀相粒子转动,直至位错线与电流方向平行.另外电子风力也会促进被阻塞在沉淀相粒子处的位错团的移动,从而促进了晶内位错的增殖,提高了位错密度.

 
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