Sturm, Daniel ; Heilmeier, Martin ; Saage, Holger ; Aguilar, Julio ; Schmitz, Georg ; Drevermann, Anne ; Palm, Martin ; Stein, Frank ; Engberding, Nico ; Kelm, Klemens ; Irsen, Stephan (2010)
Creep strength of a binary Al(62)Ti(38) alloy.
In: INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 101 (5)
doi: 10.3139/146.110321
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Al-rich Ti-Al alloys, as compared to Ti-rich gamma-TiAl-based alloys, offer an additional reduction in density of 20%, better oxidation resistance and sufficient strength at high temperatures. High temperature creep of a binary Al(62)Ti(28) alloy was studied in compression in the temperature range between 1173 K and 1323 K in air. It is shown that the alloy exhibits quite reasonable creep resistance at 1173 K, especially in view of its low density of around 3.8 g cm(-3). Stress exponents calculated as the slope n = Delta log (strain rate)/Delta log (stress) = 4 were found to be relatively constant for the temperature and stress regime investigated. This indicates that dislocation climb may be the rate controlling creep mechanism. The values of the activation energies for creep for the as-cast and the annealed Al(62)Ti(38) material coincides well with those found in the literature for interdiffusion of Al in gamma-TiAl.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Sturm, Daniel ; Heilmeier, Martin ; Saage, Holger ; Aguilar, Julio ; Schmitz, Georg ; Drevermann, Anne ; Palm, Martin ; Stein, Frank ; Engberding, Nico ; Kelm, Klemens ; Irsen, Stephan |
| Art des Eintrags: | Bibliographie |
| Titel: | Creep strength of a binary Al(62)Ti(38) alloy |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2010 |
| Verlag: | CARL HANSER VERLAG, KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | INTERNATIONAL JOURNAL OF MATERIALS RESEARCH |
| Jahrgang/Volume einer Zeitschrift: | 101 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.3139/146.110321 |
| Kurzbeschreibung (Abstract): | Al-rich Ti-Al alloys, as compared to Ti-rich gamma-TiAl-based alloys, offer an additional reduction in density of 20%, better oxidation resistance and sufficient strength at high temperatures. High temperature creep of a binary Al(62)Ti(28) alloy was studied in compression in the temperature range between 1173 K and 1323 K in air. It is shown that the alloy exhibits quite reasonable creep resistance at 1173 K, especially in view of its low density of around 3.8 g cm(-3). Stress exponents calculated as the slope n = Delta log (strain rate)/Delta log (stress) = 4 were found to be relatively constant for the temperature and stress regime investigated. This indicates that dislocation climb may be the rate controlling creep mechanism. The values of the activation energies for creep for the as-cast and the annealed Al(62)Ti(38) material coincides well with those found in the literature for interdiffusion of Al in gamma-TiAl. |
| Freie Schlagworte: | RICH TIAL ALLOYS; AL-TI; 900-DEGREES-C; PHASES; SYSTEM; MODEL |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 21 Mär 2012 09:40 |
| Letzte Änderung: | 05 Mär 2013 09:59 |
| PPN: | |
| Projekte: | PAK 19 |
| Sponsoren: | German Science Foundation (DFG) |
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