156 citations · 235 across the 7 of their papers we have counts for
7 papers
Screening of generalized stacking fault energies, surface energies and intrinsic ductile potency of refractory multicomponent alloys
Yong-Jie Hu, Aditya Sundar, Shigenobu Ogata +1
Body-centered cubic (bcc) refractory multicomponent alloys are of great interest due to their remarkable strength at high temperatures. Meanwhile, further optimizing the chemical c…
Incorporating a soft ordered phase into an amorphous configuration enhances its uniform plastic deformation under shear
Guo-Jie J. Gao, Yun-Jiang Wang, Shigenobu Ogata
Amorphous materials of homogeneous structures usually suffer from nonuniform deformation under shear, which can develop into shear localization and eventually destructive shear ban…
Understanding the Local Flow Rate Peak of a Hopper Discharging Discs through an Obstacle Using a Tetris-like Model
Guo-Jie J. Gao, Jerzy Blawzdziewicz, Michael C. Holcomb +1
Placing a round obstacle above the orifice of a flat hopper discharging uniform frictional discs has been experimentally and numerically shown in the literature to create a local p…
Structural relaxation affecting shear transformation avalanches in metallic glasses
Tomoaki Niiyama, Masato Wakeda, Tomotsugu Shimokawa +1
Avalanche behaviors, characterized by power-law statistics and structural relaxation that induces shear localization in amorphous plasticity, play an essential role in deciding the…
Hydrogen embrittlement controlled by reaction of dislocation with grain boundary in alpha-iron
Liang Wan, Wen Tong Geng, Akio Ishii +4
Hydrogen atoms absorbed by metals in the hydrogen-containing environments can lead to the premature fracture of the metal components used in load-bearing conditions. Since metals u…
Volume Contraction at a Grain Boundary in Vanadium
Jin-Li Cao, Shigenobu Ogata, W. T. Geng
It is a conventional wisdom that symmetry breakdown at grain boundaries in crystals introduces volume expansion and there has been no confirmed evidence of volume contraction at a…
Studying the elastic properties of nanocrystalline copper using a model of randomly packed uniform grains
Guo-Jie J. Gao, Yun-Jiang Wang, Shigenobu Ogata
We develop a new Voronoi protocol, which is a space tessellation method, to generate fully dense (containing no voids) nanocrystalline models of copper (Cu) with precise grain size…