Curved nanotwinned structure in Ni induced by dynamic compression
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Materials Science"
DOI: 10.1007/s10853-017-1423-9
Abstract: AbstractNanotwinned metals exhibit many interesting deformation behavior when compared to nanocrystalline materials with similar characteristic length scale. In this study, the deformation behavior of a nanotwinned Ni produced with a Ni-carbonyl chemical vapor deposition process… read more here.
Keywords: compression; deformation; nanotwinned structure; twin boundaries ... See more keywords
The effect of HCP on the formation of twin boundaries and dislocations in Ni–Co alloys
Sign Up to like & getrecommendations! Published in 2021 at "Current Applied Physics"
DOI: 10.1016/j.cap.2021.05.012
Abstract: Abstract In this study, molecular dynamics (MD) was used to simulate the rapid solidification process of Ni47Co53 and Ni48Co52 alloys at a cooling rate of 1012 K/s. The effects of HCP on the formation of twin… read more here.
Keywords: formation twin; hcp; hcp formation; twin boundaries ... See more keywords
{1 0 −1 2} twin boundaries migration accompanied by void in magnesium
Sign Up to like & getrecommendations! Published in 2020 at "Computational Materials Science"
DOI: 10.1016/j.commatsci.2020.109857
Abstract: Abstract Grain boundary (GB) migration plays a vital role in the plastic deformation of nanopolycrystalline metals. Molecular dynamics (MD) simulation on a bicrystalline Mg model is employed to investigate the mechanism of basal-prismatic (BP) boundary… read more here.
Keywords: migration accompanied; boundary migration; boundaries migration; void ... See more keywords
Unusual size effects from tilted twin boundaries in nano-twinned metals
Sign Up to like & getrecommendations! Published in 2019 at "Extreme Mechanics Letters"
DOI: 10.1016/j.eml.2019.100571
Abstract: Abstract Tilted twin boundaries (TBs), whose plane normals are rotated at an angle from the parent grain axis, naturally occur in columnar-grained, nano-twinned (NT) metals. Here, using a combination of atomistic simulations and analytical modeling,… read more here.
Keywords: tilted twin; twin thickness; size; twinned metals ... See more keywords
Atomic-scale configurations of variant twin boundaries of a pseudo-decagonal quasicrystal approximant in Al60Cr20Fe10Si10 alloy
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2017.06.183
Abstract: Abstract Twin boundaries (TBs) of decagonal quasicrystal approximants generally exhibit structural characteristics that are peculiar compared with traditional crystals with small lattice parameters. Herein, the TBs of the orthorhombic (3/2, 2/1) 2 decagonal approximant in… read more here.
Keywords: alloy; scale configurations; atomic scale; approximant ... See more keywords
Crystallography and elastic anisotropy in fatigue crack nucleation at nickel alloy twin boundaries
Sign Up to like & getrecommendations! Published in 2021 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2021.104538
Abstract: Abstract Fatigue crack nucleation at annealing twin boundaries (TBs) within polycrystal nickel-based superalloy Rene 88 D T is investigated with a microstructure-sensitive crystal plasticity (CP) model, digital image correlation strain measurements and experimental SEM crack… read more here.
Keywords: fatigue crack; nucleation; elastic anisotropy; crack nucleation ... See more keywords
Ab initio and classical atomistic modelling of structure and defects in crystalline orthorhombic polyethylene : Twin boundaries, slip interfaces, and nature of barriers
Sign Up to like & getrecommendations! Published in 2017 at "Polymer"
DOI: 10.1016/j.polymer.2017.06.008
Abstract: We study the stability of twin boundaries and slip in crystalline orthorhombic polyethylene by means of density functional theory (DFT), using a nonempirical, truly nonlocal density function, and by means of classical molecular dynamics (MD).… read more here.
Keywords: slip; energy; boundaries slip; crystalline orthorhombic ... See more keywords
Elemental segregation to twin boundaries in a MnAl ferromagnetic Heusler alloy
Sign Up to like & getrecommendations! Published in 2018 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2018.06.037
Abstract: Abstract Electron microscopy and atom probe tomography were combined to investigate the crystallography and chemistry of a single twin boundary (TB) in a rare-earth-free ferromagnetic MnAl Heusler alloy. The results establish a significant segregation of… read more here.
Keywords: heusler alloy; twin boundaries; segregation; twin ... See more keywords
Atomic scale structural characterization of {101¯2} twin boundaries in zinc
Sign Up to like & getrecommendations! Published in 2018 at "Transactions of Nonferrous Metals Society of China"
DOI: 10.1016/s1003-6326(18)64749-1
Abstract: Abstract The structure and the migration mechanisms of { 10 1 ¯ 2 } twin boundaries (TBs) of pure zinc deformed by rolling were studied using high-resolution transmission electron microscopy (HRTEM) at atomic scale. We… read more here.
Keywords: scale structural; atomic scale; twin boundaries; structural characterization ... See more keywords
Atomistic simulations of interactions between screw dislocation and twin boundaries in zirconium
Sign Up to like & getrecommendations! Published in 2018 at "Transactions of Nonferrous Metals Society of China"
DOI: 10.1016/s1003-6326(18)64757-0
Abstract: Abstract Molecular statics was employed to simulate interaction between screw dislocation and twin boundaries (TB) in hexagonal close-packed zirconium. In the moving TB model, the interaction of a moving { 10 1 ¯ 2 }… read more here.
Keywords: dislocation; twin boundaries; dislocation twin; screw dislocation ... See more keywords
Unravelling Irradiation-Induced Detwinning Mechanisms via In Situ and Aberration-Corrected TEM combined with Atomistic Simulations
Sign Up to like & getrecommendations! Published in 2018 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927618010115
Abstract: Next generation nuclear energy systems require advanced structural materials having superior radiation tolerance to increase their longevity and robustness while maintaining optimum performance. In this quest, various materials design of interfaces has been studied to… read more here.
Keywords: unravelling irradiation; detwinning mechanisms; radiation; irradiation induced ... See more keywords