Molecular Dynamics Simulation of the Evolution of Interfacial Dislocation Network and Stress Distribution of a Ni-Based Single-Crystal Superalloy Tuo Cai, Zhen-Jun Zhang, Jin-Bo Yang, Zhe-Feng Zhang.Įxploring the Possibility of Deformation Twinning in Pure Aluminum Molecular Dynamics Simulations and Experimental Investigations of Atomic Diffusion Behavior at Bonding Interface in an Explosively Welded Al/Mg Alloy Composite Plate Ting-Ting Zhang, Wen-Xian Wang, Jun Zhou, Xiao-Qing Cao, Rui-Shan Xie, Yi Wei. Li Xiang, Xiao-Hua Min, Xin Ji, Satoshi Emura, Cong-Qian Cheng, Koichi Tsuchiya.Įffect of Pre-cold Rolling-Induced Twins and Subsequent Precipitated ω-Phase on Mechanical Properties in a β-Type Ti-Mo Alloy Chen R.ĭynamic Recrystallization and Texture Evolution of GW94 Mg Alloy During Multi- and Unidirectional Impact Forging In Situ Electron Backscatter Diffraction Analysis for Microstructure Evolution and Deformation Models of Mg-Ce Alloy During Uniaxial Loading Acta Metallurgica Sinica (English Letters), 2020, 33(2): 243-251.įang-Wei Jiao, Li Jin, Jie Dong, Feng-Hua Wang.

Temperature Effects on the Microstructures of Mg-Gd-Y Alloy Processed by Multi-direction Impact Forging Rifkin, XMD-Molecular Dymamics for Metals and Ceramics. Moriarty, Model Simul Mater Sci Eng 4 (1996) 293.

Steglich, Acta Metall Sin (Engl Lett) 23 (2010) 370. Mwembela and E.Konopleva, Mater Sci Eng A 337 (2002) 121. Hosford, Trans Metall Soc AIME 242 (1968) 5. Backofen, Trans Metall Soc AIME 239 (1967) 1422. Roberts, Magnesium and its Alloys (John Wiley & Sons, New York, 1960). The annihilation rate of the amorphous regions decreases with increasing pressure, while it hardly depends on temperature.C.S. The annihilated amorphous regions turn into crystalline ones with dense dislocation networks. The amorphous regions thus annihilate rapidly once the high-rate deformation is stopped. Furthermore, it is revealed that the amorphous regions consist of irregularly distributed atoms with higher per-atom potential than those in the crystalline state. The dislocation glide is dominant under lower strain rate, and the insufficient dislocations may lead to quite inhomogeneous plastic deformation. The amorphous regions are dominant in the deformation under ultrahigh strain rate, and it results in more homogenous deformation and lower flow stress than dislocation glide. Twinning deformation is not observed in the simulations as expected, and dislocations and the amorphous regions are found to be dominant under different loading conditions. We focus on the microstructures and the evolution during both the deformation and the relaxation of the Mg single crystal. In the present work, molecular dynamics simulations with well validated modified embedded-atom method potential for Mg are performed to reveal the microscopic deformation behaviors of Mg single crystal compressed in the c axis. However, recent works show twinning deformation does not happen in compression in the c axis of the magnesium (Mg) single crystal, and it is not clear that how it deforms with limited dislocation glide in absence of twinning deformation. It is well known that twinning deformation plays an important role in the plastic deformation of hexagonal close-packed (HCP) metals because of the insufficient independent slip systems in HCP metals.

Singlecrystal magnesium