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Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion. / Liu, Manping; Roven, Hans J.; Murashkin, Maxim; Valiev, Ruslan Z.

In: Materials Science and Engineering A, Vol. 503, No. 1-2, 15.03.2009, p. 122-125.

Research output: Contribution to journal › Article › peer-review

Harvard

Liu, M, Roven, HJ, Murashkin, M & Valiev, RZ 2009, 'Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion', Materials Science and Engineering A, vol. 503, no. 1-2, pp. 122-125. https://doi.org/10.1016/j.msea.2008.02.053

APA

Liu, M., Roven, H. J., Murashkin, M., & Valiev, R. Z. (2009). Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion. Materials Science and Engineering A, 503(1-2), 122-125. https://doi.org/10.1016/j.msea.2008.02.053

Vancouver

Liu M, Roven HJ, Murashkin M, Valiev RZ. Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion. Materials Science and Engineering A. 2009 Mar 15;503(1-2):122-125. https://doi.org/10.1016/j.msea.2008.02.053

Author

Liu, Manping ; Roven, Hans J. ; Murashkin, Maxim ; Valiev, Ruslan Z. / Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion. In: Materials Science and Engineering A. 2009 ; Vol. 503, No. 1-2. pp. 122-125.

BibTeX

@article{734726db60cd44b7bacf00339f163ca8,
title = "Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion",
abstract = "Defects and deformation structures including 0° and 60° full dislocations, 30° Shockley partials, stacking faults and deformation twins in a nanostructured Al-Mg alloy processed by high-pressure torsion were identified using high-resolution transmission electron microscopy. The twinning mechanism previously predicted by the molecular dynamics simulation, i.e., the homogeneous mechanism involving dynamic overlapping of the stacking faults inside grains, was directly verified. A four-layer twin formed by the dynamic overlapping of four stacking faults was experimentally observed. Deformation twins and stacking faults formed by partial dislocations in ultrafine grains were experimentally confirmed. These results suggest that partial dislocation emissions from grain boundaries could become a deformation mechanism in ultrafine-grained aluminum during severe plastic deformation.",
keywords = "Aluminum alloys, Deformation twinning, High-pressure torsion, Partial dislocations, Severe plastic deformation, Stacking faults",
author = "Manping Liu and Roven, {Hans J.} and Maxim Murashkin and Valiev, {Ruslan Z.}",
year = "2009",
month = mar,
day = "15",
doi = "10.1016/j.msea.2008.02.053",
language = "English",
volume = "503",
pages = "122--125",
journal = "Materials Science and Engineering: A",
issn = "0921-5093",
publisher = "Elsevier",
number = "1-2",

}

RIS

TY - JOUR

T1 - Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion

AU - Liu, Manping

AU - Roven, Hans J.

AU - Murashkin, Maxim

AU - Valiev, Ruslan Z.

PY - 2009/3/15

Y1 - 2009/3/15

N2 - Defects and deformation structures including 0° and 60° full dislocations, 30° Shockley partials, stacking faults and deformation twins in a nanostructured Al-Mg alloy processed by high-pressure torsion were identified using high-resolution transmission electron microscopy. The twinning mechanism previously predicted by the molecular dynamics simulation, i.e., the homogeneous mechanism involving dynamic overlapping of the stacking faults inside grains, was directly verified. A four-layer twin formed by the dynamic overlapping of four stacking faults was experimentally observed. Deformation twins and stacking faults formed by partial dislocations in ultrafine grains were experimentally confirmed. These results suggest that partial dislocation emissions from grain boundaries could become a deformation mechanism in ultrafine-grained aluminum during severe plastic deformation.

AB - Defects and deformation structures including 0° and 60° full dislocations, 30° Shockley partials, stacking faults and deformation twins in a nanostructured Al-Mg alloy processed by high-pressure torsion were identified using high-resolution transmission electron microscopy. The twinning mechanism previously predicted by the molecular dynamics simulation, i.e., the homogeneous mechanism involving dynamic overlapping of the stacking faults inside grains, was directly verified. A four-layer twin formed by the dynamic overlapping of four stacking faults was experimentally observed. Deformation twins and stacking faults formed by partial dislocations in ultrafine grains were experimentally confirmed. These results suggest that partial dislocation emissions from grain boundaries could become a deformation mechanism in ultrafine-grained aluminum during severe plastic deformation.

KW - Aluminum alloys

KW - Deformation twinning

KW - High-pressure torsion

KW - Partial dislocations

KW - Severe plastic deformation

KW - Stacking faults

UR - http://www.scopus.com/inward/record.url?scp=59049095991&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2008.02.053

DO - 10.1016/j.msea.2008.02.053

M3 - Article

AN - SCOPUS:59049095991

VL - 503

SP - 122

EP - 125

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

SN - 0921-5093

IS - 1-2

ER -

ID: 42939613