Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation

Manping Liu, Hans J. Roven, Maxim Murashkin, Ruslan Z. Valiev, Asear Kilmametov, T. Ungár, L. Balogh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Deformation twins and stacking faults have been observed in nanostructured Al-Mg alloys subjected to severe plastic deformation. These observations are surprising because deformation twinning has never been observed in their coarse-grained counterparts under normal conditions. This paper reviews experimental evidences on non-equilibrium grain boundaries, deformation twinning and partial dislocation emissions from grain boundaries. Some of these features can be explained by the results reported from molecular-dynamics simulations of pure fee metals. Special emphasis is laid on the recent observations of high density hexagonal and rhombic shaped nanostructures with an average size of 3 nm in the Al-Mg alloys processed by high pressure torsion. A possible formation process of these nanostructures are proposed based on molecular-dynamics simulations.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages225-230
Number of pages6
Volume1137
Publication statusPublished - 2008
EventNano- and Microscale Materials-Mechanical Properties and Behavior under Extreme Environments - Boston, MA, United States
Duration: Dec 1 2008Dec 5 2008

Other

OtherNano- and Microscale Materials-Mechanical Properties and Behavior under Extreme Environments
CountryUnited States
CityBoston, MA
Period12/1/0812/5/08

Fingerprint

plastic deformation
Nanostructures
Plastic deformation
Twinning
twinning
Molecular dynamics
Grain boundaries
grain boundaries
molecular dynamics
Computer simulation
Stacking faults
Dislocations (crystals)
crystal defects
Torsional stress
torsion
simulation
Metals
metals

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Liu, M., Roven, H. J., Murashkin, M., Valiev, R. Z., Kilmametov, A., Ungár, T., & Balogh, L. (2008). Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation. In Materials Research Society Symposium Proceedings (Vol. 1137, pp. 225-230)

Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation. / Liu, Manping; Roven, Hans J.; Murashkin, Maxim; Valiev, Ruslan Z.; Kilmametov, Asear; Ungár, T.; Balogh, L.

Materials Research Society Symposium Proceedings. Vol. 1137 2008. p. 225-230.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, M, Roven, HJ, Murashkin, M, Valiev, RZ, Kilmametov, A, Ungár, T & Balogh, L 2008, Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation. in Materials Research Society Symposium Proceedings. vol. 1137, pp. 225-230, Nano- and Microscale Materials-Mechanical Properties and Behavior under Extreme Environments, Boston, MA, United States, 12/1/08.
Liu M, Roven HJ, Murashkin M, Valiev RZ, Kilmametov A, Ungár T et al. Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation. In Materials Research Society Symposium Proceedings. Vol. 1137. 2008. p. 225-230
Liu, Manping ; Roven, Hans J. ; Murashkin, Maxim ; Valiev, Ruslan Z. ; Kilmametov, Asear ; Ungár, T. ; Balogh, L. / Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation. Materials Research Society Symposium Proceedings. Vol. 1137 2008. pp. 225-230
@inproceedings{8348475faba1440fa73805dd38d08a02,
title = "Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation",
abstract = "Deformation twins and stacking faults have been observed in nanostructured Al-Mg alloys subjected to severe plastic deformation. These observations are surprising because deformation twinning has never been observed in their coarse-grained counterparts under normal conditions. This paper reviews experimental evidences on non-equilibrium grain boundaries, deformation twinning and partial dislocation emissions from grain boundaries. Some of these features can be explained by the results reported from molecular-dynamics simulations of pure fee metals. Special emphasis is laid on the recent observations of high density hexagonal and rhombic shaped nanostructures with an average size of 3 nm in the Al-Mg alloys processed by high pressure torsion. A possible formation process of these nanostructures are proposed based on molecular-dynamics simulations.",
author = "Manping Liu and Roven, {Hans J.} and Maxim Murashkin and Valiev, {Ruslan Z.} and Asear Kilmametov and T. Ung{\'a}r and L. Balogh",
year = "2008",
language = "English",
isbn = "9781615673865",
volume = "1137",
pages = "225--230",
booktitle = "Materials Research Society Symposium Proceedings",

}

TY - GEN

T1 - Formation of nanostructures in Al-Mg alloys subjected to severe plastic deformation

AU - Liu, Manping

AU - Roven, Hans J.

AU - Murashkin, Maxim

AU - Valiev, Ruslan Z.

AU - Kilmametov, Asear

AU - Ungár, T.

AU - Balogh, L.

PY - 2008

Y1 - 2008

N2 - Deformation twins and stacking faults have been observed in nanostructured Al-Mg alloys subjected to severe plastic deformation. These observations are surprising because deformation twinning has never been observed in their coarse-grained counterparts under normal conditions. This paper reviews experimental evidences on non-equilibrium grain boundaries, deformation twinning and partial dislocation emissions from grain boundaries. Some of these features can be explained by the results reported from molecular-dynamics simulations of pure fee metals. Special emphasis is laid on the recent observations of high density hexagonal and rhombic shaped nanostructures with an average size of 3 nm in the Al-Mg alloys processed by high pressure torsion. A possible formation process of these nanostructures are proposed based on molecular-dynamics simulations.

AB - Deformation twins and stacking faults have been observed in nanostructured Al-Mg alloys subjected to severe plastic deformation. These observations are surprising because deformation twinning has never been observed in their coarse-grained counterparts under normal conditions. This paper reviews experimental evidences on non-equilibrium grain boundaries, deformation twinning and partial dislocation emissions from grain boundaries. Some of these features can be explained by the results reported from molecular-dynamics simulations of pure fee metals. Special emphasis is laid on the recent observations of high density hexagonal and rhombic shaped nanostructures with an average size of 3 nm in the Al-Mg alloys processed by high pressure torsion. A possible formation process of these nanostructures are proposed based on molecular-dynamics simulations.

UR - http://www.scopus.com/inward/record.url?scp=70450145474&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70450145474&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:70450145474

SN - 9781615673865

VL - 1137

SP - 225

EP - 230

BT - Materials Research Society Symposium Proceedings

ER -