Results 31 to 40 of about 431,575 (349)

Interface character distributions in WC/Co cemented carbide

Cailiao gongcheng
Electron backscatter diffraction， five parameter analysis， overlap-pole-figure analysis and near coincident site analysis were used to investigate the interface character distributions of WC/WC grain boundaries and WC/Co phase boundaries in WC/Co ...
YU Shunshi, CHEN Song, LI Guanghui, LI Hui, LIN Yan, LI Hongfeng, DAI Siyuan, WU Tizhen, WANG Weiguo   +8 more
doaj   +1 more source

Effect of shear-coupled grain boundary motion on coherent precipitation

, 2019
We examine the interaction between precipitates and grain boundaries, which undergo shear-coupled motion. The elastic problem, emerging from grain boundary perturbations and an elastic mismatch strain induced by the precipitates, is analysed.
Spatschek, Robert, Weikamp, Marc
core   +1 more source

Atomistic Simulation Study of Grain Boundary Segregation and Grain Boundary Migration in Ni-Cr Alloys

Metals
Using Molecular Dynamics (MD) and Monte Carlo (MC) simulations, we studied the grain boundary (GB) segregation under different temperatures and Cr concentrations in Ni-Cr alloys with two distinct grain-boundary structures, i.e., Σ5(310)[010] and Σ101(200)
Pengwei Huang, Qixin Xiao, Wangyu Hu, Bowen Huang, Dingwang Yuan   +4 more
doaj   +1 more source

Molecular Dynamics Calculations of Grain Boundary Mobility in CdTe

Nanomaterials, 2019
Molecular dynamics (MD) simulations have been applied to study mobilities of Σ3, Σ7 and Σ11 grain boundaries in CdTe. First, an existing MD approach to drive the motion of grain boundaries in face-centered-cubic and body-centered-cubic ...
Rodolfo Aguirre, Sharmin Abdullah, Xiaowang Zhou, David Zubia   +3 more
doaj   +1 more source

Arrangement and Decomposition of Grain Boundary Dislocations: Two-Mode Phase-Field Crystal Simulation

Frontiers in Materials, 2022
The grain-boundary dislocation arrangement and decomposition during constant-volume deformation of a nanoscale bi-crystal system in fcc-structured materials were studied by using the two-mode phase-field crystal (2PFC) method.
Huanqing Li, Xiaona Wang, Haibin Zhang, Xiaolin Tian, Hua Hou, Yuhong Zhao, Yuhong Zhao   +6 more
doaj   +1 more source

Grain boundary energies and cohesive strength as a function of geometry

, 2008
Cohesive laws are stress-strain curves used in finite element calculations to describe the debonding of interfaces such as grain boundaries. It would be convenient to describe grain boundary cohesive laws as a function of the parameters needed to ...
D. E. Spearot, D. Wolf, D. Wolf, D. Wolf, E. Iesulauro, E. Iesulauro, F. Sansoz, G. Palumbo, J. P. Hirth, James P. Sethna, M. Falk, M. P. Allen, P. H. Pumphrey, R. J. Harrison, Valerie R. Coffman, W. Bollmann, Y. I. Frenkel, Y. Ishida   +17 more
core   +1 more source

The superheated Melting of Grain Boundary [PDF]

, 2005
Based on a model of the melting of Grain Boundary (GB), we discuss the possibility of the existence of superheated GB state. A Molecular Dynamics simulation presented here shows that the superheated GB state can realized in the high symmetric tilt GB ...
F. Ercolessi, S. E. Khaikin, S. R. Phillpot, W. Kauzmann, Wei Fan, Xin-Gao Gong, Z. H. Jin   +6 more
core   +1 more source

Boundary plane-oriented grain boundary model generation

Modelling and Simulation in Materials Science and Engineering, 2022
Abstract This study proposes algorithms for building tilt grain boundary (GB) models with a boundary plane-oriented approach that does not rely on existence of a coincidence site lattice (CSL). As conventional GB model generation uses the CSL of superimposed grains as the starting point, our totally different ...
Yoyo Hinuma, Masanori Kohyama, Shingo Tanaka   +2 more
openaire   +2 more sources

From metallic glasses to nanocrystals: Molecular dynamics simulations on the crossover from glass-like to grain-boundary-mediated deformation behaviour

, 2018
Nanocrystalline metals contain a large fraction of high-energy grain boundaries, which may be considered as glassy phases. Consequently, with decreasing grain size, a crossover in the deformation behaviour of nanocrystals to that of metallic glasses has ...
Albe, Karsten, Brink, Tobias
core   +1 more source

Importance of frequency-dependent grain boundary scattering in nanocrystalline silicon and silicon-germanium thermoelectrics [PDF]

, 2014
Nanocrystalline silicon and silicon-germanium alloys are promising thermoelectric materials that have achieved substantially improved figure of merits compared to their bulk counterparts. This enhancement is typically attributed to a reduction in lattice
Hua, Chengyun, Minnich, Austin J.
core   +2 more sources