The enhancement of warm-temperature mechanical properties of ultrafine-grained aluminum by carbon nanotubes

H. J. Choi, J. H. Shin, D. H. Bae

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ultrafine-grained (UFG) aluminum and UFG composite containing carbon nanotubes (CNTs) are fabricated by hot-rolling the ball-milled powder, and their mechanical properties are investigated at warm temperatures ranging from 423 to 523. K. A number of voids are formed at the non-equilibrium grain boundaries in the UFG aluminum during tensile deformation at warm temperatures, resulting in poor ductility. However, the UFG composite exhibits enhanced ductility as well as superior yield stress. CNTs suppress the development of non-equilibrium grain boundaries and the formation of voids, giving rise to notably enhanced ductility at warm temperatures.

Original languageEnglish
Pages (from-to)6134-6139
Number of pages6
JournalMaterials Science and Engineering A
Volume528
Issue number19-20
DOIs
Publication statusPublished - 2011 Jul 25

Fingerprint

Carbon Nanotubes
Aluminum
ductility
Ductility
Carbon nanotubes
carbon nanotubes
mechanical properties
aluminum
Mechanical properties
augmentation
voids
Grain boundaries
grain boundaries
tensile deformation
composite materials
Hot rolling
Composite materials
Temperature
temperature
Yield stress

All Science Journal Classification (ASJC) codes

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

Cite this

@article{399de39d7778469ea66904b5a7da491b,
title = "The enhancement of warm-temperature mechanical properties of ultrafine-grained aluminum by carbon nanotubes",
abstract = "Ultrafine-grained (UFG) aluminum and UFG composite containing carbon nanotubes (CNTs) are fabricated by hot-rolling the ball-milled powder, and their mechanical properties are investigated at warm temperatures ranging from 423 to 523. K. A number of voids are formed at the non-equilibrium grain boundaries in the UFG aluminum during tensile deformation at warm temperatures, resulting in poor ductility. However, the UFG composite exhibits enhanced ductility as well as superior yield stress. CNTs suppress the development of non-equilibrium grain boundaries and the formation of voids, giving rise to notably enhanced ductility at warm temperatures.",
author = "Choi, {H. J.} and Shin, {J. H.} and Bae, {D. H.}",
year = "2011",
month = "7",
day = "25",
doi = "10.1016/j.msea.2011.04.020",
language = "English",
volume = "528",
pages = "6134--6139",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "19-20",

}

The enhancement of warm-temperature mechanical properties of ultrafine-grained aluminum by carbon nanotubes. / Choi, H. J.; Shin, J. H.; Bae, D. H.

In: Materials Science and Engineering A, Vol. 528, No. 19-20, 25.07.2011, p. 6134-6139.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The enhancement of warm-temperature mechanical properties of ultrafine-grained aluminum by carbon nanotubes

AU - Choi, H. J.

AU - Shin, J. H.

AU - Bae, D. H.

PY - 2011/7/25

Y1 - 2011/7/25

N2 - Ultrafine-grained (UFG) aluminum and UFG composite containing carbon nanotubes (CNTs) are fabricated by hot-rolling the ball-milled powder, and their mechanical properties are investigated at warm temperatures ranging from 423 to 523. K. A number of voids are formed at the non-equilibrium grain boundaries in the UFG aluminum during tensile deformation at warm temperatures, resulting in poor ductility. However, the UFG composite exhibits enhanced ductility as well as superior yield stress. CNTs suppress the development of non-equilibrium grain boundaries and the formation of voids, giving rise to notably enhanced ductility at warm temperatures.

AB - Ultrafine-grained (UFG) aluminum and UFG composite containing carbon nanotubes (CNTs) are fabricated by hot-rolling the ball-milled powder, and their mechanical properties are investigated at warm temperatures ranging from 423 to 523. K. A number of voids are formed at the non-equilibrium grain boundaries in the UFG aluminum during tensile deformation at warm temperatures, resulting in poor ductility. However, the UFG composite exhibits enhanced ductility as well as superior yield stress. CNTs suppress the development of non-equilibrium grain boundaries and the formation of voids, giving rise to notably enhanced ductility at warm temperatures.

UR - http://www.scopus.com/inward/record.url?scp=79957959284&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79957959284&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2011.04.020

DO - 10.1016/j.msea.2011.04.020

M3 - Article

AN - SCOPUS:79957959284

VL - 528

SP - 6134

EP - 6139

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 - 19-20

ER -