The age-hardening characteristics of an AI-6061/AI2O3 metal matrix composite

Jingtao Wang, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Yan Ma, Terence G. Langdon

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Experiments were conducted to determine the age-hardening behavior of an Al-6061 metal matrix composite reinforced with ∼20 vol pct of A12O3 microspheres and prepared using liquid metallurgy processing. The presence of alumina microspheres increases the dislocation density in the matrix of the composite in the as-quenched state and, by comparison with the monolithic alloy, this leads to a significant increase in the yield stress in the as-quenched and unaged condition. From measurements of the 0.2 pct proof stress, there is no evidence for any significant acceleration in the aging process in the composite material: both materials attain similar peak-aged conditions after essentially the same aging times. The microstructures of the composite and the monolithic alloy are similar in the peak-aged condition, with a high density of fine needlelike β″ precipitates and, in the over-aged condition, with a reasonably homogeneous distribution of the rod-shaped β′ phase. It is proposed that the aging behavior is better quantified by determining the yield stress rather than by taking hardness measurements. Formerly Visiting Scholar, Kyushu University,

Original languageEnglish
Pages (from-to)581-587
Number of pages7
JournalMetallurgical and Materials Transactions A
Volume26
Issue number3
DOIs
Publication statusPublished - Mar 1 1995

Fingerprint

precipitation hardening
metal matrix composites
Age hardening
Metals
Aging of materials
Composite materials
Microspheres
composite materials
Yield stress
lead alloys
Lead alloys
metallurgy
Aluminum Oxide
Metallurgy
Precipitates
precipitates
Alumina
rods
hardness
aluminum oxides

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

The age-hardening characteristics of an AI-6061/AI2O3 metal matrix composite. / Wang, Jingtao; Furukawa, Minoru; Horita, Zenji; Nemoto, Minoru; Ma, Yan; Langdon, Terence G.

In: Metallurgical and Materials Transactions A, Vol. 26, No. 3, 01.03.1995, p. 581-587.

Research output: Contribution to journalArticle

Wang, J, Furukawa, M, Horita, Z, Nemoto, M, Ma, Y & Langdon, TG 1995, 'The age-hardening characteristics of an AI-6061/AI2O3 metal matrix composite', Metallurgical and Materials Transactions A, vol. 26, no. 3, pp. 581-587. https://doi.org/10.1007/BF02663907
Wang, Jingtao ; Furukawa, Minoru ; Horita, Zenji ; Nemoto, Minoru ; Ma, Yan ; Langdon, Terence G. / The age-hardening characteristics of an AI-6061/AI2O3 metal matrix composite. In: Metallurgical and Materials Transactions A. 1995 ; Vol. 26, No. 3. pp. 581-587.
@article{079e07eb1e114f999055c45e9c6090c1,
title = "The age-hardening characteristics of an AI-6061/AI2O3 metal matrix composite",
abstract = "Experiments were conducted to determine the age-hardening behavior of an Al-6061 metal matrix composite reinforced with ∼20 vol pct of A12O3 microspheres and prepared using liquid metallurgy processing. The presence of alumina microspheres increases the dislocation density in the matrix of the composite in the as-quenched state and, by comparison with the monolithic alloy, this leads to a significant increase in the yield stress in the as-quenched and unaged condition. From measurements of the 0.2 pct proof stress, there is no evidence for any significant acceleration in the aging process in the composite material: both materials attain similar peak-aged conditions after essentially the same aging times. The microstructures of the composite and the monolithic alloy are similar in the peak-aged condition, with a high density of fine needlelike β″ precipitates and, in the over-aged condition, with a reasonably homogeneous distribution of the rod-shaped β′ phase. It is proposed that the aging behavior is better quantified by determining the yield stress rather than by taking hardness measurements. Formerly Visiting Scholar, Kyushu University,",
author = "Jingtao Wang and Minoru Furukawa and Zenji Horita and Minoru Nemoto and Yan Ma and Langdon, {Terence G.}",
year = "1995",
month = "3",
day = "1",
doi = "10.1007/BF02663907",
language = "English",
volume = "26",
pages = "581--587",
journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",
issn = "1073-5623",
publisher = "Springer Boston",
number = "3",

}

TY - JOUR

T1 - The age-hardening characteristics of an AI-6061/AI2O3 metal matrix composite

AU - Wang, Jingtao

AU - Furukawa, Minoru

AU - Horita, Zenji

AU - Nemoto, Minoru

AU - Ma, Yan

AU - Langdon, Terence G.

PY - 1995/3/1

Y1 - 1995/3/1

N2 - Experiments were conducted to determine the age-hardening behavior of an Al-6061 metal matrix composite reinforced with ∼20 vol pct of A12O3 microspheres and prepared using liquid metallurgy processing. The presence of alumina microspheres increases the dislocation density in the matrix of the composite in the as-quenched state and, by comparison with the monolithic alloy, this leads to a significant increase in the yield stress in the as-quenched and unaged condition. From measurements of the 0.2 pct proof stress, there is no evidence for any significant acceleration in the aging process in the composite material: both materials attain similar peak-aged conditions after essentially the same aging times. The microstructures of the composite and the monolithic alloy are similar in the peak-aged condition, with a high density of fine needlelike β″ precipitates and, in the over-aged condition, with a reasonably homogeneous distribution of the rod-shaped β′ phase. It is proposed that the aging behavior is better quantified by determining the yield stress rather than by taking hardness measurements. Formerly Visiting Scholar, Kyushu University,

AB - Experiments were conducted to determine the age-hardening behavior of an Al-6061 metal matrix composite reinforced with ∼20 vol pct of A12O3 microspheres and prepared using liquid metallurgy processing. The presence of alumina microspheres increases the dislocation density in the matrix of the composite in the as-quenched state and, by comparison with the monolithic alloy, this leads to a significant increase in the yield stress in the as-quenched and unaged condition. From measurements of the 0.2 pct proof stress, there is no evidence for any significant acceleration in the aging process in the composite material: both materials attain similar peak-aged conditions after essentially the same aging times. The microstructures of the composite and the monolithic alloy are similar in the peak-aged condition, with a high density of fine needlelike β″ precipitates and, in the over-aged condition, with a reasonably homogeneous distribution of the rod-shaped β′ phase. It is proposed that the aging behavior is better quantified by determining the yield stress rather than by taking hardness measurements. Formerly Visiting Scholar, Kyushu University,

UR - http://www.scopus.com/inward/record.url?scp=0029277139&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029277139&partnerID=8YFLogxK

U2 - 10.1007/BF02663907

DO - 10.1007/BF02663907

M3 - Article

VL - 26

SP - 581

EP - 587

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

SN - 1073-5623

IS - 3

ER -