Computer simulation of a [110] edge dislocation intersecting a {Sigma}11 <101> {l_brace}131{r_brace} grain boundary in aluminum

Journal Article · Tue Aug 04 04:00:00 EDT 1998 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00221-8· OSTI ID:651138

Heinisch, H L; Kurtz, R J ^[1]; Hoagland, R G; Hirth, J P ^[2]

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1. Pacific Northwest National Lab., Richland, WA (United States)
2. Washington State Univ., Pullman, WA (United States)

The interactions of dislocations with grain boundaries are fundamental unit processes of crystal plasticity, and a detailed knowledge of these processes is crucial to the quantitative understanding of mechanical behavior of materials. There have been many atomistic studies of dislocations and grain boundaries (GBs) in metals, with relatively few efforts focused on the interaction of matrix dislocations with GBs. Typical problems include simulations of extrinsic GB dislocations or interactions of dislocations lying parallel to a GB, which exploit symmetry along the dislocation line for application of periodic boundary conditions. In an attempt to investigate the more general dislocation-GB interaction configurations, in the present work the authors perform an atomistic simulation of an edge dislocation intersecting a symmetric tilt GB out of the boundary plane, a problem that requires 3D geometry.

• OSTI ID: 651138
• Report Number(s): CONF-980202--
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 4-5 Vol. 39; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
COMPUTERIZED SIMULATION
DISLOCATIONS
GRAIN BOUNDARIES
INTERACTIONS
MICROSTRUCTURE