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   微孔形核 的翻译结果: 查询用时:0.415秒
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微孔形核
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  “微孔形核”译为未确定词的双语例句
     4. With decreasing notch root radius, the intensity of the stress and strain fields ahead of the tip of the notch increases, which accelerates the initiation, growth and coalescence of the micro-voids. So the toughness and the plasticity of the materials decrease.
     4.随试样缺口根半径的减小,其前端的应力应变场强度增加,将促使微孔形核,长大和聚合的速率加快,使材料塑性和韧性降低。
短句来源
     The fracture surface of AZ91 as-extruded and as-solution have dimple characteristic,and their fracture mechanism is ductile fracture. However, the fracture mechanism of AZ91 alloy as-aged changes from typical ductile tearing to mixture of ductile and brittle.
     AZ91合金挤压态和固溶态的断面都有韧窝特征,为微孔形核的韧性断裂机制,而在时效峰值态的断面上则呈现出了韧性与脆性混合断裂的特征。
短句来源
  相似匹配句对
     A dislocation model of describing the nucleation and growth of microvoid also has been proposed
     文中还提出了微孔形核和长大的位错模型。
短句来源
     A dislocation model describing the nucleation and growth of microvoid has also been proposed.
     文中还提出了微孔形核和长大的位错模型
短句来源
     Peraparation of Micropore Fiberglass
     微孔玻璃纤维的研制
短句来源
     MICROCELLULAR FOAM POLYMER MATERIALS
     微孔发泡高分子材料
短句来源
     NUCLEATION AND GROWTH OF CVD DIAMOND
     CVD金刚石的形核和生长
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  nucleation model
The process of vapor condensation in a spherically symmetric explosion is studied using a kinetic unsteady nucleation model.
      
These results are discussed and a simple nucleation model is used to illustrate this different behavior.
      
The consistency of the simulation results for the heterogeneous nucleation is assessed by means of a classical nucleation model, from which an estimate of the interfacial surface tension is also worked out and compared with experimental data.
      
Dehydroxylation kinetics of both original and irradiated samples are interpreted by a two-stage nucleation model at 623, 648, 673, 698 and 723 K.
      
We propose dynamical models of hadrons, the nucleation model and the free-decay model, in which results of the string model are used to represent interactions.
      
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This paper deals with the deformation and fracture of 5OCrV ferrite and carbide under tensile force. During tensile testing, voids uncleation is on the (C+F) matrix interfaces, ferrite and carbide. Then the primary voids will further grow and coarsen. Fur- ther improvement of these essential properties is still desirable and requires a fundamental understanding of the crack propagation process.

本文研究了在拉伸应力作用下50CrV钢铁素体和碳化物的二相组织材料的形变和断裂. 在拉伸试验中.微孔形核是在(C+F)混合界面、铁素体和碳化物上,初始微孔将进一步长大和粗 化,从而进一步阐明在裂纹扩展阶段的本质.

The microstructure, the shear strain and the micro-hardness around the sheared surface by plastic shearing of red copper bar under axial load were examined, and the sheared surfaces were observed by SEM. Three regions with different microstructure features caused by plastic deformation were observed from the sheared surface to the inner matrix. It is shown that the outer surface layer with depth of 100250μm endures severely plastic shear deformation during shearing, in which finely equiaxed grains are observed...

The microstructure, the shear strain and the micro-hardness around the sheared surface by plastic shearing of red copper bar under axial load were examined, and the sheared surfaces were observed by SEM. Three regions with different microstructure features caused by plastic deformation were observed from the sheared surface to the inner matrix. It is shown that the outer surface layer with depth of 100250μm endures severely plastic shear deformation during shearing, in which finely equiaxed grains are observed and 50% increase of micro-hardness is detected. The shear strain decreases with the increase of the distance to the sheared surface. The fracture zone takes the shape of crescent symmetrically and its area declines with the increase of the applied axial load. Lots of elongated narrow (microvoids) along shearing direction are shown in the fractured zone. It is inferred that the fractured zone is formed by the mechanism of nucleation of the microvoids, and then growth and coalescence along the shearing direction.

研究了轴向压力作用下紫铜棒料塑性剪切分离面附近的微观组织形态、剪应变和硬度分布以及剪切分离面形貌。结果表明: 剪切分离面变形区可分为3个区域, 在距表面100~250μm薄层内, 晶粒发生了极其剧烈的大剪切塑性变形, 其维氏显微硬度增大50%; 剪应变随与剪切分离面距离的增大而减小; 剪切分离面上断面呈月牙状, 轴向压力增大, 断面减小; 断面上有大量长条形微孔洞, 是由微孔形核后在剪应力作用下沿剪切方向长大和聚合而形成的。

The effects of heat treatment on the microstructure,tensile deformation and fracture behavior of AZ91 magnesium alloy as-extruded were analyzed and studied by OM and SEM. The results show that comparing as-solution with as-extruded,the tensile strength of AZ91 alloy hardly changes,but ductility and grain size of calloy as-solution increase significantly;comparing as-aged with as-solution,the tensite strength of alloy as-aged increases a litte,but ductility reduces,with strengthening phase precipitating after...

The effects of heat treatment on the microstructure,tensile deformation and fracture behavior of AZ91 magnesium alloy as-extruded were analyzed and studied by OM and SEM. The results show that comparing as-solution with as-extruded,the tensile strength of AZ91 alloy hardly changes,but ductility and grain size of calloy as-solution increase significantly;comparing as-aged with as-solution,the tensite strength of alloy as-aged increases a litte,but ductility reduces,with strengthening phase precipitating after solution and aging treatment.The fracture surface of AZ91 as-extruded and as-solution have dimple characteristic,and their fracture mechanism is ductile fracture.However, the fracture mechanism of AZ91 alloy as-aged changes from typical ductile tearing to mixture of ductile and brittle.

通过金相显微组织观察和断口SEM分析,研究了热处理对挤压AZ91镁合金拉伸变形与断裂行为的影响。结果表明:AZ91镁合金固溶态与挤压态相比抗拉强度变化不大,但伸长率有较大幅度的提高,晶粒尺寸有所增大;时效峰值态的抗拉强度与固溶态相比有一定的提高,但伸长率有较大幅度的降低,合金固溶时效处理后伴有强化相粒子析出。AZ91合金挤压态和固溶态的断面都有韧窝特征,为微孔形核的韧性断裂机制,而在时效峰值态的断面上则呈现出了韧性与脆性混合断裂的特征。

 
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