Results 41 to 50 of about 58,697 (194)

Microstructure Characterization and Hardening Evaluation of Ferrite/Martensitic Steels Induced by He²⁺ Irradiation

Crystals, 2023
Two ferrite/martensitic (F/M) steels with different Si concentrations (0 and 0.4 wt.%) were irradiated by 250 keV He2+ ions with different fluences of 2 × 1016 ions/cm2 and 1 × 1017 ions/cm2.
Guangjie Zhang, Junfeng Yang, Zhuoming Xie, Linchao Zhang, Rui Liu, Meng Sun, Gang Li, Hui Wang, Yi Hu, Xuebang Wu, Qianfeng Fang, Changsong Liu, Xianping Wang   +12 more
doaj   +1 more source

On gradient field theories: gradient magnetostatics and gradient elasticity

, 2014
In this work the fundamentals of gradient field theories are presented and reviewed. In particular, the theories of gradient magnetostatics and gradient elasticity are investigated and compared.
Lazar, Markus
core   +1 more source

Toy nanoindentation model and incipient plasticity

, 2009
A toy model of two dimensional nanoindentation in finite crystals is proposed. The crystal is described by periodized discrete elasticity whereas the indenter is a rigid strain field of triangular shape representing a hard knife-like indenter.
A. Carpio, Amit, Asenjo, Bulatov, Carpio, Carpio, Carpio, Carpio, Cui, de la Fuente, Gerde, Greer, Hirth, Hull, I. Plans, Iooss, Kelchner, Kessler, L.L. Bonilla, Landau, Landau, Lorenz, Marder, Navarro, Pla, Plans, Rubinstein, Schall, Shan, Slepyan, Zhen, Zhu   +31 more
core   +1 more source

DISLOCATION DIPOLES AND DISLOCATION LOOPS

Le Journal de Physique Colloques, 1966
Basic theoretical ideas on the properties of two special dislocation configurations, dislocation dipoles and prismatic dislocation loops, are presented. Some of the author's recent results, based mostly on the application of the model of elastic continuum on these crystalline defects, are also given.
openaire   +2 more sources

Phase Field Crystal Modeling as a Unified Atomistic Approach to Defect Dynamics

, 2014
Material properties controlled by evolving defect structures, such as mechanical response, often involve processes spanning many length and time scales which cannot be modeled using a single approach.
Berry, Joel, Provatas, Nikolas, Rottler, Jörg, Sinclair, Chad W.   +3 more
core   +1 more source

Atomistic Simulations of Basal Dislocations Interacting with Mg$_{17}$Al$_{12}$ Precipitates in Mg [PDF]

, 2019
The mechanical properties of Mg-Al alloys are greatly influenced by the complex intermetallic phase Mg$_{17}$Al$_{12}$, which is the most dominant precipitate found in this alloy system.
Bitzek, Erik, Guénolé, Julien, Korte-Kerzel, Sandra, Prakash, Aruna, Vaid, Aviral   +4 more
core   +1 more source

Dislocation Burgers vector and the Peach–Koehler force: a review

Journal of Materials Research and Technology, 2019
Different definitions of the Burgers vector and the corresponding construction of the Burgers circuit for dislocation loops and straight dislocations, created by the displacement discontinuity imposed across different surface cuts are reviewed.
Vlado A. Lubarda
doaj   +1 more source

The Discrete Dislocation Dynamics of Multiple Dislocation Loops

Archive for Rational Mechanics and Analysis
57 pages, 3 figures.
Patrizi, Stefania, Vaughan, Mary
openaire   +3 more sources

Molecular Dynamics Simulation on B3-GaN Thin Films under Nanoindentation

Nanomaterials, 2018
The B3-GaN thin film was investigated by performing large-scale molecular dynamics (MD) simulation of nanoindentation. Its plastic behavior and the corresponding mechanism were studied. Based on the analysis on indentation curve, dislocation density, and
Chen Chen, Haitao Li, Henggao Xiang, Xianghe Peng   +3 more
doaj   +1 more source

The solid angle and the Burgers formula in the theory of gradient elasticity: line integral representation

, 2013
A representation of the solid angle and the Burgers formula as line integral is derived in the framework of the theory of gradient elasticity of Helmholtz type.
Lazar, Markus, Po, Giacomo
core   +1 more source