Correlation between microstructure and mechanical properties of severely deformed metals

J. Gubicza, N. Chinh, J. Lábár, S. Dobatkin, Z. Hegedus, T. G. Langdon

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter α in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure.

Original languageEnglish
Pages (from-to)271-274
Number of pages4
JournalJournal of Alloys and Compounds
Volume483
Issue number1-2
DOIs
Publication statusPublished - Aug 26 2009

Fingerprint

Equal channel angular pressing
Ductility
Metals
Mechanical properties
Microstructure
Stacking faults
Yield stress
Recovery
Ultrafine

Keywords

  • Dislocations and disclinations (C)
  • Mechanical properties (C)
  • Metals and alloys (A)
  • Microstructure (C)
  • X-ray diffraction (D)

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

Correlation between microstructure and mechanical properties of severely deformed metals. / Gubicza, J.; Chinh, N.; Lábár, J.; Dobatkin, S.; Hegedus, Z.; Langdon, T. G.

In: Journal of Alloys and Compounds, Vol. 483, No. 1-2, 26.08.2009, p. 271-274.

Research output: Contribution to journalArticle

@article{04e4d7b4070d436c9aa79aef6789d5ba,
title = "Correlation between microstructure and mechanical properties of severely deformed metals",
abstract = "There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter α in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure.",
keywords = "Dislocations and disclinations (C), Mechanical properties (C), Metals and alloys (A), Microstructure (C), X-ray diffraction (D)",
author = "J. Gubicza and N. Chinh and J. L{\'a}b{\'a}r and S. Dobatkin and Z. Hegedus and Langdon, {T. G.}",
year = "2009",
month = "8",
day = "26",
doi = "10.1016/j.jallcom.2008.07.200",
language = "English",
volume = "483",
pages = "271--274",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Correlation between microstructure and mechanical properties of severely deformed metals

AU - Gubicza, J.

AU - Chinh, N.

AU - Lábár, J.

AU - Dobatkin, S.

AU - Hegedus, Z.

AU - Langdon, T. G.

PY - 2009/8/26

Y1 - 2009/8/26

N2 - There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter α in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure.

AB - There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter α in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure.

KW - Dislocations and disclinations (C)

KW - Mechanical properties (C)

KW - Metals and alloys (A)

KW - Microstructure (C)

KW - X-ray diffraction (D)

UR - http://www.scopus.com/inward/record.url?scp=69249239134&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69249239134&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2008.07.200

DO - 10.1016/j.jallcom.2008.07.200

M3 - Article

AN - SCOPUS:69249239134

VL - 483

SP - 271

EP - 274

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1-2

ER -