The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion

Y. B. Wang, X. Z. Liao, Y. H. Zhao, E. J. Lavernia, S. P. Ringer, Zenji Horita, T. G. Langdon, Y. T. Zhu

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

A recent model developed to predict the smallest grain sizes obtainable by severe plastic deformation has worked well for materials with medium to high stacking fault energies (SFEs) but not for those with low SFEs. To probe this issue, experiments were conducted using a Cu-30wt.% Zn alloy with a very low SFE of 7mJ/m2 as the model material. High-pressure torsion was used as the grain refinement technique. The results indicate that stacking faults and twin boundaries play a key role in the grain refinement process such that the smallest achievable grain size is determined by the highest stacking fault and twin density that the system is able to produce. An amorphization of grain boundaries was also observed in the final structure. These observations are very different from those reported for materials having medium to high SFEs and they confirm the operation of a different grain refinement mechanism.

Original languageEnglish
Pages (from-to)4959-4966
Number of pages8
JournalMaterials Science and Engineering A
Volume527
Issue number18-19
DOIs
Publication statusPublished - Jul 1 2010

Fingerprint

stacking fault energy
Grain refinement
Stacking faults
crystal defects
Torsional stress
torsion
grain size
plastic deformation
grain boundaries
Amorphization
probes
Plastic deformation
Grain boundaries
Experiments

All Science Journal Classification (ASJC) codes

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

Cite this

Wang, Y. B., Liao, X. Z., Zhao, Y. H., Lavernia, E. J., Ringer, S. P., Horita, Z., ... Zhu, Y. T. (2010). The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion. Materials Science and Engineering A, 527(18-19), 4959-4966. https://doi.org/10.1016/j.msea.2010.04.036

The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion. / Wang, Y. B.; Liao, X. Z.; Zhao, Y. H.; Lavernia, E. J.; Ringer, S. P.; Horita, Zenji; Langdon, T. G.; Zhu, Y. T.

In: Materials Science and Engineering A, Vol. 527, No. 18-19, 01.07.2010, p. 4959-4966.

Research output: Contribution to journalArticle

Wang, YB, Liao, XZ, Zhao, YH, Lavernia, EJ, Ringer, SP, Horita, Z, Langdon, TG & Zhu, YT 2010, 'The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion', Materials Science and Engineering A, vol. 527, no. 18-19, pp. 4959-4966. https://doi.org/10.1016/j.msea.2010.04.036
Wang, Y. B. ; Liao, X. Z. ; Zhao, Y. H. ; Lavernia, E. J. ; Ringer, S. P. ; Horita, Zenji ; Langdon, T. G. ; Zhu, Y. T. / The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion. In: Materials Science and Engineering A. 2010 ; Vol. 527, No. 18-19. pp. 4959-4966.
@article{055aa70b8b18499a9c5c30d6ef5f1e9b,
title = "The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion",
abstract = "A recent model developed to predict the smallest grain sizes obtainable by severe plastic deformation has worked well for materials with medium to high stacking fault energies (SFEs) but not for those with low SFEs. To probe this issue, experiments were conducted using a Cu-30wt.{\%} Zn alloy with a very low SFE of 7mJ/m2 as the model material. High-pressure torsion was used as the grain refinement technique. The results indicate that stacking faults and twin boundaries play a key role in the grain refinement process such that the smallest achievable grain size is determined by the highest stacking fault and twin density that the system is able to produce. An amorphization of grain boundaries was also observed in the final structure. These observations are very different from those reported for materials having medium to high SFEs and they confirm the operation of a different grain refinement mechanism.",
author = "Wang, {Y. B.} and Liao, {X. Z.} and Zhao, {Y. H.} and Lavernia, {E. J.} and Ringer, {S. P.} and Zenji Horita and Langdon, {T. G.} and Zhu, {Y. T.}",
year = "2010",
month = "7",
day = "1",
doi = "10.1016/j.msea.2010.04.036",
language = "English",
volume = "527",
pages = "4959--4966",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "18-19",

}

TY - JOUR

T1 - The role of stacking faults and twin boundaries in grain refinement of a Cu-Zn alloy processed by high-pressure torsion

AU - Wang, Y. B.

AU - Liao, X. Z.

AU - Zhao, Y. H.

AU - Lavernia, E. J.

AU - Ringer, S. P.

AU - Horita, Zenji

AU - Langdon, T. G.

AU - Zhu, Y. T.

PY - 2010/7/1

Y1 - 2010/7/1

N2 - A recent model developed to predict the smallest grain sizes obtainable by severe plastic deformation has worked well for materials with medium to high stacking fault energies (SFEs) but not for those with low SFEs. To probe this issue, experiments were conducted using a Cu-30wt.% Zn alloy with a very low SFE of 7mJ/m2 as the model material. High-pressure torsion was used as the grain refinement technique. The results indicate that stacking faults and twin boundaries play a key role in the grain refinement process such that the smallest achievable grain size is determined by the highest stacking fault and twin density that the system is able to produce. An amorphization of grain boundaries was also observed in the final structure. These observations are very different from those reported for materials having medium to high SFEs and they confirm the operation of a different grain refinement mechanism.

AB - A recent model developed to predict the smallest grain sizes obtainable by severe plastic deformation has worked well for materials with medium to high stacking fault energies (SFEs) but not for those with low SFEs. To probe this issue, experiments were conducted using a Cu-30wt.% Zn alloy with a very low SFE of 7mJ/m2 as the model material. High-pressure torsion was used as the grain refinement technique. The results indicate that stacking faults and twin boundaries play a key role in the grain refinement process such that the smallest achievable grain size is determined by the highest stacking fault and twin density that the system is able to produce. An amorphization of grain boundaries was also observed in the final structure. These observations are very different from those reported for materials having medium to high SFEs and they confirm the operation of a different grain refinement mechanism.

UR - http://www.scopus.com/inward/record.url?scp=77955983089&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955983089&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2010.04.036

DO - 10.1016/j.msea.2010.04.036

M3 - Article

VL - 527

SP - 4959

EP - 4966

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 18-19

ER -