Interface-mediated plasticity of nanoscale Al–Al2Cu eutectics
Abstract
Laser surface re-melted Al-Al2Cu eutectic alloy with α-Al and θ-Al2Cu nanoscale lamellae exhibits high strength and good plasticity at room temperature, implying that the nanoscale θ-Al2Cu lamellae plastically co-deform with α-Al. Microscopy characterization reveal that plastic deformation of θ-Al2Cu lamellae is accommodated by localized shear on unusual slip planes of {121}Al2Cu. Herein, we elucidate interface-mediated deformation mechanisms of nanoscale Al -Al2Cu eutectics and investigate the structure and properties of the {001}Al$$\parallel$${001}Al2Cu interface using atomistic simulations. Simulation results reveal that the interface is composed of two sets of misfit dislocations with the displacement shift complete vectors as Burgers vectors.
- Authors:
-
- University of Nebraska, Lincoln, NE (United States)
- University of Michigan, Ann Arbor, MI (United States)
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1596367
- Alternate Identifier(s):
- OSTI ID: 1595155
- Grant/Contract Number:
- SC0016808
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Acta Materialia
- Additional Journal Information:
- Journal Volume: 186; Journal Issue: C; Journal ID: ISSN 1359-6454
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; interface; dislocation; plasticity; Al–Al2Cu eutectic; atomistic simulations
Citation Formats
Liu, Guisen, Wang, Shujuan, Misra, Amit, and Wang, Jian. Interface-mediated plasticity of nanoscale Al–Al2Cu eutectics. United States: N. p., 2020.
Web. doi:10.1016/j.actamat.2020.01.024.
Liu, Guisen, Wang, Shujuan, Misra, Amit, & Wang, Jian. Interface-mediated plasticity of nanoscale Al–Al2Cu eutectics. United States. https://doi.org/10.1016/j.actamat.2020.01.024
Liu, Guisen, Wang, Shujuan, Misra, Amit, and Wang, Jian. Thu .
"Interface-mediated plasticity of nanoscale Al–Al2Cu eutectics". United States. https://doi.org/10.1016/j.actamat.2020.01.024. https://www.osti.gov/servlets/purl/1596367.
@article{osti_1596367,
title = {Interface-mediated plasticity of nanoscale Al–Al2Cu eutectics},
author = {Liu, Guisen and Wang, Shujuan and Misra, Amit and Wang, Jian},
abstractNote = {Laser surface re-melted Al-Al2Cu eutectic alloy with α-Al and θ-Al2Cu nanoscale lamellae exhibits high strength and good plasticity at room temperature, implying that the nanoscale θ-Al2Cu lamellae plastically co-deform with α-Al. Microscopy characterization reveal that plastic deformation of θ-Al2Cu lamellae is accommodated by localized shear on unusual slip planes of {121}Al2Cu. Herein, we elucidate interface-mediated deformation mechanisms of nanoscale Al -Al2Cu eutectics and investigate the structure and properties of the {001}Al$\parallel${001}Al2Cu interface using atomistic simulations. Simulation results reveal that the interface is composed of two sets of misfit dislocations with the displacement shift complete vectors as Burgers vectors.},
doi = {10.1016/j.actamat.2020.01.024},
journal = {Acta Materialia},
number = C,
volume = 186,
place = {United States},
year = {Thu Jan 16 00:00:00 EST 2020},
month = {Thu Jan 16 00:00:00 EST 2020}
}
Web of Science
Figures / Tables:
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