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; Effect of interaction of dislocations...; Abstract: The contribution to the critical shear stress of nanocomposites caused by the interaction between screw dislocations and core-shell nanowires (coated nanowires......
account of the microstructure inhomogeneity, was used to investigate the micro-bending of metallic crystalline foils. In this model, both statistically stored dislocations (SSDs) and geometrically necessary dislocations (GNDs) are taken as the internal state variables. The strain gradient hardening in micro-bending of single-grained metal foils was predicted by evolution of GNDs. The predicted......
interior. A mass of dislocations and dislocation cells form during plastic deformation while some twins form simultaneously. After twining, the grain orientations change, and then they will slip on suitable condition. This process leads the formation of dislocations in twins and deformation of twins. The recovery and recrystallization reduce during twin-roll casting because of the plastic deformation......
面向Solid Edge的参数化标准件图库开发方法王小虎,殷国富,徐雷四川大学制造科学与工程学院摘 要:针对Solid Edge软件缺乏满足国内标准的通用标准件图库的问题,通过分析Solid Edge软件的文档结构及二次开发的两种建模方式,提出了一种面向Solid Edge的参数化标准件图库的开发方法.论述了在Microsoft Visual Basic 6.0环境下,通过Solid Edge程序驱动建模的方式,进行标准件图库的二次开发方法及流程.所设计Solid Edge标准件图库具有人机界面友好,使用方便的特点,可根据用户要求自动生成零件三维模型,有助于提高设计效率.关键词:Solid Edge二次开发;标准件图库;程序驱动;VB;......
Unveiling the underlying mechanism of forming edge cracks upon high strain-rate rolling of magnesium alloyBiwu Zhu1,Xiao Liu1,Chao Xie2,Jing Su3,Pengcheng Guo4,Changping Tang1,Wenhui Liu11. Key... underlying mechanism of forming primary and secondary edge cracks has been investigated.It is found that dynamic recrystallization(DRX) induced by subgrains tends to blunt cracks,while twinning-induced......
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[29,45,46,61-63], which assumes equal probability of edge and screw dislocations. The optimized intersections are employed clearly in all metals. However, values, which are generally adopted... to the input elastic constants. Table 1 Results of elastic anisotropy and contrast factor in various materials Fig. 4 Plots of theoretical values vs Γ in Ni for pure edge or screw dislocations......
for the application of high-temperature strain in the later stage to some extent. Key words: phase-field crystal method; pre-melting; edge dislocations; liquid pools 1 Introduction The special properties...) with a total of 10 dislocation pairs. Each dislocation pair is composed of two edge-type dislocations with an angle of 60° [48] (the local enlarged image and their vector direction are shown in Figs......
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