Creep resistance of cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys at 300-400 °C

Keith E. Knipling; David C. Dunand

doi:10.1016/j.scriptamat.2008.02.059

Creep resistance of cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys at 300-400 °C

Keith E. Knipling^*, David C. Dunand

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

Cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys, upon compressive creep deformation at 300-400 °C, exhibit threshold stresses attributable to climb-controlled bypass of coherent Al₃Zr and Al₃(Zr_1-xTi_x) precipitates. Al-0.1Zr-0.1Ti exhibits a smaller threshold stress than Al-0.1Zr, which is attributed principally to a reduced lattice parameter mismatch between the Al₃(Zr_1-xTi_x) precipitates and the matrix. The present alloys are less creep resistant than Al-Sc and Al-Sc-Zr/Ti alloys with similar precipitate radii and volume fractions.

Original language	English (US)
Pages (from-to)	387-390
Number of pages	4
Journal	Scripta Materialia
Volume	59
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2008.02.059
State	Published - Aug 2008

Keywords

Aluminum alloys
Creep
Precipitation strengthening
Titanium
Zirconium

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2008.02.059

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@article{6ad4b9acb09f4e839d678c293ebbfade,

title = "Creep resistance of cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys at 300-400 °C",

abstract = "Cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys, upon compressive creep deformation at 300-400 °C, exhibit threshold stresses attributable to climb-controlled bypass of coherent Al3Zr and Al3(Zr1-xTix) precipitates. Al-0.1Zr-0.1Ti exhibits a smaller threshold stress than Al-0.1Zr, which is attributed principally to a reduced lattice parameter mismatch between the Al3(Zr1-xTix) precipitates and the matrix. The present alloys are less creep resistant than Al-Sc and Al-Sc-Zr/Ti alloys with similar precipitate radii and volume fractions.",

keywords = "Aluminum alloys, Creep, Precipitation strengthening, Titanium, Zirconium",

author = "Knipling, {Keith E.} and Dunand, {David C.}",

note = "Funding Information: This research is supported by the US Department of Energy, Basic Sciences Division, under contracts DE-FG02-02ER45997 and DE-FG02-98ER45721.",

year = "2008",

month = aug,

doi = "10.1016/j.scriptamat.2008.02.059",

language = "English (US)",

volume = "59",

pages = "387--390",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Limited",

number = "4",

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TY - JOUR

T1 - Creep resistance of cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys at 300-400 °C

AU - Knipling, Keith E.

AU - Dunand, David C.

N1 - Funding Information: This research is supported by the US Department of Energy, Basic Sciences Division, under contracts DE-FG02-02ER45997 and DE-FG02-98ER45721.

PY - 2008/8

Y1 - 2008/8

N2 - Cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys, upon compressive creep deformation at 300-400 °C, exhibit threshold stresses attributable to climb-controlled bypass of coherent Al3Zr and Al3(Zr1-xTix) precipitates. Al-0.1Zr-0.1Ti exhibits a smaller threshold stress than Al-0.1Zr, which is attributed principally to a reduced lattice parameter mismatch between the Al3(Zr1-xTix) precipitates and the matrix. The present alloys are less creep resistant than Al-Sc and Al-Sc-Zr/Ti alloys with similar precipitate radii and volume fractions.

AB - Cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys, upon compressive creep deformation at 300-400 °C, exhibit threshold stresses attributable to climb-controlled bypass of coherent Al3Zr and Al3(Zr1-xTix) precipitates. Al-0.1Zr-0.1Ti exhibits a smaller threshold stress than Al-0.1Zr, which is attributed principally to a reduced lattice parameter mismatch between the Al3(Zr1-xTix) precipitates and the matrix. The present alloys are less creep resistant than Al-Sc and Al-Sc-Zr/Ti alloys with similar precipitate radii and volume fractions.

KW - Aluminum alloys

KW - Creep

KW - Precipitation strengthening

KW - Titanium

KW - Zirconium

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U2 - 10.1016/j.scriptamat.2008.02.059

DO - 10.1016/j.scriptamat.2008.02.059

M3 - Article

AN - SCOPUS:44749092033

SN - 1359-6462

VL - 59

SP - 387

EP - 390

JO - Scripta Materialia

JF - Scripta Materialia

IS - 4

ER -

Creep resistance of cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys at 300-400 °C

Abstract

Keywords

ASJC Scopus subject areas

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