Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | ASTM Special Technical Publication |
| Herausgeber (Verlag) | ASTM International |
| Seiten | 167-185 |
| Seitenumfang | 19 |
| Auflage | 1371 |
| ISBN (Print) | 0803128533 |
| Publikationsstatus | Veröffentlicht - 2000 |
| Extern publiziert | Ja |
| Veranstaltung | The Symposium of 'Thermo-Mechanical Fatigue Behavior of Materials: Third Volume' - Norfolk, VA, USA Dauer: 4 Nov. 1998 → 5 Nov. 1998 |
Publikationsreihe
| Name | ASTM Special Technical Publication |
|---|---|
| Nummer | 1371 |
| ISSN (Print) | 1040-3094 |
Abstract
Isothermal and thermo-mechanical fatigue (TMF) behavior of a dispersion-strengthened aluminum alloy has been studied between room temperature and 350°C. Cyclic stress-strain (CSS) response was found to be dominated by dispersoid-dislocation interactions, and thus, the effect of an additional SiC reinforcement on CSS behavior was only minor. As the dispersoids are thermally very stable, identical microstructures were observed to form independent of the actual loading conditions. Consequently, CSS response under TMF conditions could be accurately predicted from isothermal tests only. Damage evolution, by contrast, was found to depend drastically on the type of test. A microcrack propagation model could be successfully used to correlate all tests performed on the unreinforced alloy. In the SiC-reinforced material, however, both creep damage and oxidation damage were more severe under TMF conditions than predicted from isothermal tests, and life prediction is nonconservative, if only based on isothermal tests.
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ASTM Special Technical Publication. 1371. Aufl. ASTM International, 2000. S. 167-185 (ASTM Special Technical Publication; Nr. 1371).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Effect of SiC-reinforcement on thermo-mechanical fatigue of a dispersion-strengthened high-temperature aluminum alloy
AU - Jung, Arnd
AU - Maier, Hans J.
AU - Christ, Hans Jürgen
PY - 2000
Y1 - 2000
N2 - Isothermal and thermo-mechanical fatigue (TMF) behavior of a dispersion-strengthened aluminum alloy has been studied between room temperature and 350°C. Cyclic stress-strain (CSS) response was found to be dominated by dispersoid-dislocation interactions, and thus, the effect of an additional SiC reinforcement on CSS behavior was only minor. As the dispersoids are thermally very stable, identical microstructures were observed to form independent of the actual loading conditions. Consequently, CSS response under TMF conditions could be accurately predicted from isothermal tests only. Damage evolution, by contrast, was found to depend drastically on the type of test. A microcrack propagation model could be successfully used to correlate all tests performed on the unreinforced alloy. In the SiC-reinforced material, however, both creep damage and oxidation damage were more severe under TMF conditions than predicted from isothermal tests, and life prediction is nonconservative, if only based on isothermal tests.
AB - Isothermal and thermo-mechanical fatigue (TMF) behavior of a dispersion-strengthened aluminum alloy has been studied between room temperature and 350°C. Cyclic stress-strain (CSS) response was found to be dominated by dispersoid-dislocation interactions, and thus, the effect of an additional SiC reinforcement on CSS behavior was only minor. As the dispersoids are thermally very stable, identical microstructures were observed to form independent of the actual loading conditions. Consequently, CSS response under TMF conditions could be accurately predicted from isothermal tests only. Damage evolution, by contrast, was found to depend drastically on the type of test. A microcrack propagation model could be successfully used to correlate all tests performed on the unreinforced alloy. In the SiC-reinforced material, however, both creep damage and oxidation damage were more severe under TMF conditions than predicted from isothermal tests, and life prediction is nonconservative, if only based on isothermal tests.
UR - http://www.scopus.com/inward/record.url?scp=0033890732&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0033890732
SN - 0803128533
T3 - ASTM Special Technical Publication
SP - 167
EP - 185
BT - ASTM Special Technical Publication
PB - ASTM International
T2 - The Symposium of 'Thermo-Mechanical Fatigue Behavior of Materials: Third Volume'
Y2 - 4 November 1998 through 5 November 1998
ER -