A quantitative study of cavity development in the tensile testing of an aluminum metal matrix composite processed by equal-channel angular pressing

Megumi Kawasaki, Yi Huang, Cheng Xu, Minoru Furukawa, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A metal matrix composite, consisting of an Al-6061 matrix alloy reinforced with 10 vol.% of fine Al2O3 particulates, was processed by equal-channel angular pressing for 1 pass at room temperature and an additional 11 passes at 473 K. Microstructural observations showed the grain size was reduced from ∼3.5 to ∼1.9 μm but the average particulate size remained unchanged at ∼270 nm. Tensile testing was conducted to failure at 873 K on samples cut from the as-received material and from as-pressed billets. Following fracture, quantitative measurements were taken to determine the size and shape of the internal cavities developed during tensile testing. The measurements show cavities form more readily in the as-received condition probably due to the higher flow stresses in this material. The pressed material contained several large cavities oriented parallel to the tensile axis. Calculations show these cavities are consistent with a transition from superplastic diffusion growth to plasticity-controlled growth.

Original languageEnglish
Pages (from-to)402-407
Number of pages6
JournalMaterials Science and Engineering A
Volume410-411
DOIs
Publication statusPublished - Nov 25 2005

Fingerprint

Equal channel angular pressing
metal matrix composites
Tensile testing
pressing
Aluminum
Metals
aluminum
cavities
Composite materials
particulates
Plastic flow
billets
Plasticity
plastic properties
grain size
room temperature
matrices
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

A quantitative study of cavity development in the tensile testing of an aluminum metal matrix composite processed by equal-channel angular pressing. / Kawasaki, Megumi; Huang, Yi; Xu, Cheng; Furukawa, Minoru; Horita, Zenji; Langdon, Terence G.

In: Materials Science and Engineering A, Vol. 410-411, 25.11.2005, p. 402-407.

Research output: Contribution to journalArticle

Kawasaki, Megumi ; Huang, Yi ; Xu, Cheng ; Furukawa, Minoru ; Horita, Zenji ; Langdon, Terence G. / A quantitative study of cavity development in the tensile testing of an aluminum metal matrix composite processed by equal-channel angular pressing. In: Materials Science and Engineering A. 2005 ; Vol. 410-411. pp. 402-407.
@article{264e9910389544e599368e06b2e9dbb8,
title = "A quantitative study of cavity development in the tensile testing of an aluminum metal matrix composite processed by equal-channel angular pressing",
abstract = "A metal matrix composite, consisting of an Al-6061 matrix alloy reinforced with 10 vol.{\%} of fine Al2O3 particulates, was processed by equal-channel angular pressing for 1 pass at room temperature and an additional 11 passes at 473 K. Microstructural observations showed the grain size was reduced from ∼3.5 to ∼1.9 μm but the average particulate size remained unchanged at ∼270 nm. Tensile testing was conducted to failure at 873 K on samples cut from the as-received material and from as-pressed billets. Following fracture, quantitative measurements were taken to determine the size and shape of the internal cavities developed during tensile testing. The measurements show cavities form more readily in the as-received condition probably due to the higher flow stresses in this material. The pressed material contained several large cavities oriented parallel to the tensile axis. Calculations show these cavities are consistent with a transition from superplastic diffusion growth to plasticity-controlled growth.",
author = "Megumi Kawasaki and Yi Huang and Cheng Xu and Minoru Furukawa and Zenji Horita and Langdon, {Terence G.}",
year = "2005",
month = "11",
day = "25",
doi = "10.1016/j.msea.2005.08.073",
language = "English",
volume = "410-411",
pages = "402--407",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - A quantitative study of cavity development in the tensile testing of an aluminum metal matrix composite processed by equal-channel angular pressing

AU - Kawasaki, Megumi

AU - Huang, Yi

AU - Xu, Cheng

AU - Furukawa, Minoru

AU - Horita, Zenji

AU - Langdon, Terence G.

PY - 2005/11/25

Y1 - 2005/11/25

N2 - A metal matrix composite, consisting of an Al-6061 matrix alloy reinforced with 10 vol.% of fine Al2O3 particulates, was processed by equal-channel angular pressing for 1 pass at room temperature and an additional 11 passes at 473 K. Microstructural observations showed the grain size was reduced from ∼3.5 to ∼1.9 μm but the average particulate size remained unchanged at ∼270 nm. Tensile testing was conducted to failure at 873 K on samples cut from the as-received material and from as-pressed billets. Following fracture, quantitative measurements were taken to determine the size and shape of the internal cavities developed during tensile testing. The measurements show cavities form more readily in the as-received condition probably due to the higher flow stresses in this material. The pressed material contained several large cavities oriented parallel to the tensile axis. Calculations show these cavities are consistent with a transition from superplastic diffusion growth to plasticity-controlled growth.

AB - A metal matrix composite, consisting of an Al-6061 matrix alloy reinforced with 10 vol.% of fine Al2O3 particulates, was processed by equal-channel angular pressing for 1 pass at room temperature and an additional 11 passes at 473 K. Microstructural observations showed the grain size was reduced from ∼3.5 to ∼1.9 μm but the average particulate size remained unchanged at ∼270 nm. Tensile testing was conducted to failure at 873 K on samples cut from the as-received material and from as-pressed billets. Following fracture, quantitative measurements were taken to determine the size and shape of the internal cavities developed during tensile testing. The measurements show cavities form more readily in the as-received condition probably due to the higher flow stresses in this material. The pressed material contained several large cavities oriented parallel to the tensile axis. Calculations show these cavities are consistent with a transition from superplastic diffusion growth to plasticity-controlled growth.

UR - http://www.scopus.com/inward/record.url?scp=28944442776&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=28944442776&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2005.08.073

DO - 10.1016/j.msea.2005.08.073

M3 - Article

VL - 410-411

SP - 402

EP - 407

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

ER -