Nanoindentation/scratching at finite temperatures: Insights from atomistic-based modeling

SZ Chavoshi, S Xu - Progress in Materials Science, 2019 - Elsevier
Atomistic-based multiscale and molecular dynamics modeling are powerful tools to simulate
the localized strain problems, offering tremendous opportunities to bridge the knowledge …

Constitutive modeling of cellular-structured metals produced by additive manufacturing

J Kwon, GM Karthik, Y Estrin, HS Kim - Acta Materialia, 2022 - Elsevier
Computational modeling is essential in the development and application of metal additive
manufacturing (MAM). Most materials processed by laser or electron beam MAM exhibit a …

Excellent combination of strength, conductivity and ductility realized in a dilute Cu-Cr-Zr alloy by coherent nanoprecipitates

S Ma, Q Zhang, J Fan, L Fu, M Wen, M Liu… - Materials Science and …, 2023 - Elsevier
Here, by a proper design of chemical composition to provide a guarantee of excellent
conductivity and high enough strength, a new dilute Cu-Cr-Zr alloy is developed. The alloy …

Microstructure evolution and high temperature wear resistance of in-situ synthesized carbides reinforced NiCoFeCrSiMo high entropy alloy coatings fabricated by …

H Zhang, G Liu, N Ren, N Cheng, Z Dong… - Surface and Coatings …, 2023 - Elsevier
In this work, we reported a novel strengthening strategy of NiCoFeCrSiMo high entropy alloy
by high density in-situ synthesized carbides. The external WC particles were introduced into …

Influence of scandium addition on microstructure and mechanical properties in nickel-based superalloys: an integrated multiscale modeling and experimental …

L Li, J Li, F Liu, L Tan, Q Fang, Y Wei - International Journal of Plasticity, 2023 - Elsevier
Microalloying has long been recognized as an effective method for improving the
mechanical properties of metallic materials and developing new ones. In this study, we …

Role of layer thickness and dislocation distribution in confined layer slip in nanolaminated Nb

WR Jian, S Xu, Y Su, IJ Beyerlein - International Journal of Plasticity, 2022 - Elsevier
Confined layer slip (CLS) is considered as the primary mechanism for plastic deformation in
nanolaminates. It depicts the confined motion of a single dislocation between two parallel …

Frank-Read source operation in six body-centered cubic refractory metals

S Xu, Y Su, LTW Smith, IJ Beyerlein - Journal of the Mechanics and Physics …, 2020 - Elsevier
Abstract The Frank-Read (FR) source is a well-known intragranular dislocation source that
plays an important role in size-dependent dislocation multiplication in metallic crystals. In …

Comparative modeling of the disregistry and Peierls stress for dissociated edge and screw dislocations in Al

S Xu, JR Mianroodi, A Hunter, B Svendsen… - International Journal of …, 2020 - Elsevier
Many elementary deformation processes in metals involve the motion of dislocations. The
planes of glide and specific processes dislocations prefer depend heavily on their atomic …

Modeling dislocations and heat conduction in crystalline materials: atomistic/continuum coupling approaches

S Xu, X Chen - International Materials Reviews, 2019 - Taylor & Francis
Dislocations and heat conduction are essential components that influence properties and
performance of crystalline materials, yet the modelling of which remains challenging partly …

[HTML][HTML] Modeling of precipitate strengthening with near-chemical accuracy: Case study of Al-6xxx alloys

Y Hu, WA Curtin - Acta Materialia, 2022 - Elsevier
Many metal alloys are strengthened by controlling precipitation to achieve an optimal peak-
aged condition where the strength-limiting processes of precipitate shearing and Orowan …