Grain-size effects on the deformation in nanocrystalline multi-principal element alloy
Multi-principal element alloys (MPEAs) continue to garner great interest due to their
potentially remarkable mechanical properties, especially at elevated temperatures for key …
potentially remarkable mechanical properties, especially at elevated temperatures for key …
Positive deviation from a Hall-Petch relation in nanocrystalline aluminum
C HJ - Materials transactions, 2009 - jstage.jst.go.jp
The dependence of deformation behavior on the grain size in metals has been extensively
studied over the past few decades. 1) Especially, nanocrystalline (nc, the grain size below …
studied over the past few decades. 1) Especially, nanocrystalline (nc, the grain size below …
Plastic deformation of nanocrystalline materials
H Hahn, P Mondal, KA Padmanabhan - Nanostructured Materials, 1997 - Elsevier
A model for the deformation of nanocrystalline materials based on grain boundary sliding
and formation of mesoscopic glide planes is presented. The experimental result of …
and formation of mesoscopic glide planes is presented. The experimental result of …
Deformation mechanism crossover and mechanical behaviour in nanocrystalline materials
V Yamakov, D Wolf, SR Phillpot… - Philosophical …, 2003 - Taylor & Francis
We use molecular dynamics simulations to elucidate the transition with decreasing grain
size from a dislocation-to a grain-boundary-based deformation mechanism in …
size from a dislocation-to a grain-boundary-based deformation mechanism in …
Plastic deformation mechanisms in nanocrystalline columnar grain structures
D Farkas, WA Curtin - Materials Science and Engineering: A, 2005 - Elsevier
We present an atomistic study of the plastic deformation mechanisms occurring in columnar
structures of nanocrystalline Ni, with particular emphasis on the process of dislocation …
structures of nanocrystalline Ni, with particular emphasis on the process of dislocation …
Mechanical properties and deformation behavior of a refractory multiprincipal element alloy under cycle loading
In comparison with the state-of-the-art Ni-based superalloys, refractory multiprincipal
element alloys (MPEAs) exhibit considerably higher strengths at temperatures above 1600∘ …
element alloys (MPEAs) exhibit considerably higher strengths at temperatures above 1600∘ …
Complex strengthening mechanisms in the NbMoTaW multi-principal element alloy
Refractory multi-principal element alloys (MPEAs) have exceptional mechanical properties,
including high strength-to-weight ratio and fracture toughness, at high temperatures. Here …
including high strength-to-weight ratio and fracture toughness, at high temperatures. Here …
Influence of competition between intragranular dislocation nucleation and intergranular slip transfer on mechanical properties of ultrafine-grained metals
T Tsuru, Y Aoyagi, Y Kaji, T Shimokawa - Materials Transactions, 2013 - jstage.jst.go.jp
In general the plastic deformation characteristics of coarsegrained metals (generally grain
size d> 1 µm) is determined by the average quantity of collective motion of dislocations …
size d> 1 µm) is determined by the average quantity of collective motion of dislocations …
Vicinal twin boundaries providing dislocation sources in nanocrystalline Al
The role of vicinal twin boundaries in tensile deformation of nanocrystalline materials is
investigated using molecular dynamics. Lattice dislocations are emitted from the intersection …
investigated using molecular dynamics. Lattice dislocations are emitted from the intersection …
The influence of twins on the mechanical properties of nc-Al
The presence of grown-in twins in nanocrystalline-Al is found to enhance plastic deformation
via twin-migration in which partial dislocations, emitted at the intersection of the twin …
via twin-migration in which partial dislocations, emitted at the intersection of the twin …