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Effects of Germanium on Movement of Dislocations in p-Type Czochralski Silicon Zhao Yiying1,Yang Deren1,Li Dongsheng1 (1.State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China) Abstract:By indentation at room temperature followed by annealing at high temperatures, the pinning effect of germanium on dislocations in germanium-doped Czochralski silicon......
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......
constraints due to significant change of grain shape, development of texture and formation of pronounced substructure. Key words: large plastic strain; strain compatibility; dislocations 1... of a polycrystalline material generates a higher density of dislocations than that of a single crystal and this effect becomes more pronounced with reduction of a mean grain size. This conception is known......
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The Role of Misfit Dislocations in Strength Enhancement of Cu/Ni Microlaminates Yan Zhi-jun1,YAN Li2,CHENG Dong1 (1.Marine Engineering College, DaLian Maritime University;2.Institute of Material... dislocations on the mechanical properties of the microlaminates. The misfit dislocation network plays an important role in strength enhancement of Cu/Ni microlaminates because of its resistance......
Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformationsAleksandr V.Korchuganov1,Aleksandr N.Tyumentsev1,2,Konstantin P.Zolnikov1,Igor Yu.Litovchenko1,2.... The study shows that the resulting nucleation of partial dislocations on the free surface and their glide occurs through local fcc→bcc→hcp transformations via consistent atomic displacements. We propose......
Electron force-induced dislocations annihilation and regeneration of a superalloy through electrical in-situ transmission electron microscopy observationsXina Zhang1,2,Hongwei Li1,2,Mei... transmission electron microscopy in this work. Dislocations annihilation at first and then regeneration was found for the first time, which directly proves the existence of electron force during......
Crack initiation ahead of piled-up of dislocations emitted from a mode Ⅱ blunt crackCaifu Qian, Wuyang Chu, and Lijie QiaoDepartment of Mechanical Engineering, Beijing University of Chemical... tests in a transmission electron microscope (TEM) show that dislocations emitted from a mode II crack tip will form a inverse piled-up group after equilibrium or a double piled-up group when they meet......
Interfacial dislocations dominated lateral growth of long-period stacking ordered phase in Mg alloysQianqian Jin1,Xiaohong Shao1,Shijian Zheng2,Yangtao Zhou1,Bo Zhang1,Xiuliang Ma1,31. Shenyang.... The LPSO/Mg interface features the unique configuration of the Shockley partial dislocations, which produces a near zero macroscopic strain because the net Burgers vectors equal zero. The 18 R/Mg interface......
Atomistic Simulation of Interaction between Grain Boundary and Dislocations in Ni3AlDongliang LIN(T.L.Lin) Da CHEN Min LU Department of Materials Science,Shanghai Jiaotong University... to simulate the interaction between the grain boundary(GB) and dislocations in Ni3Al alloys.The focus has been placed on the energy feature of theinteraction,the distortion of GB structural units......
