Sequential transmutation of prismatic dislocations during <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si15.svg"><mml:mrow><mml:mo>{</mml:mo><mml:mrow><mml:mn>11</mml:mn><mml:mover accent="true"><mml:mn>2</mml:mn><mml:mo>¯</mml:mo></mml:mover><mml:mn>2</mml:mn></mml:mrow><mml:mo>}</mml:mo></mml:mrow></mml:math> twin-slip interaction in titanium

Zhou, Shuo; Chen, Peng; Zha, Min; Zhu, Yulong; Li, Bin; Wang, Huiyuan

doi:10.1016/j.scriptamat.2023.115678

Cited by 4 publications

(1 citation statement)

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“…In order to simulate the interaction between an atomistic defect within a grain and a GB with a determined misorientation angle, some computational methods have successfully been utilized [16,17]. Molecular dynamics (MD) simulations are widely used to study the tensile response, deformation mechanisms and crack propagation of nanocrystalline materials [16,[18][19][20][21][22]. Using MD, it has been found that the accumulation of dislocations at the crack tip reduces the crack propagation [19].…”

Section: Introductionmentioning

confidence: 99%

Effects of Grain Boundary Misorientation Angle on the Mechanical Behavior of Al Bicrystals

Velilla-Díaz,

Zambrano

2023

Nanomaterials

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This research article explores the effect of grain boundary (GB) misorientation on the mechanical behavior of aluminum (Al) bicrystals by means of molecular dynamics (MD) simulations. The effect of GB misorientation on the mechanical properties, fracture resistance, and crack propagation are evaluated under monotonic and cyclic load conditions. The J-integral and the crack tip opening displacement (CTOD) are assessed to establish the effect of the GB misorientation angle on the fracture resistance. The simulations reveal that the misorientation angle plays a significant role in the mechanical response of Al bicrystals. The results also evidence a gradual change in the mechanical behavior from brittle to ductile as the misorientation angle is increased.

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