Schön, Stefan ; Prielipp, Helge ; Janssen, Rolf ; Rödel, Jürgen ; Claussen, Nils (1994)
Effect of Microstructural Scale on Thermal Shock Resistance of Aluminum-Reinforced Alumina.
In: Journal of the American Ceramic Society, 77 (3)
doi: 10.1111/j.1151-2916.1994.tb05352.x
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Thermal shock data are presented for two types of Al/Al2O3 composites (35 vol% Al) with different microstructural scale and compared to a monolithic alumina. The fine-scale Al/A12O3 material exhibits high room-temperature strength (765 MPa) and a gradual decrease in retained strength with increasing quenching temperature difference, δT, and improved thermal shock resistance—as compared to monolithic alumina—even at δT= 600°C. The coarse-scale Al/Al2O3 composite shows high long-crack fracture toughness (10.5 MPa·m1/2) and almost no strength degradation up to δT= 500°C. A qualitative picture for the effect of microstructural scale on thermal shock resistance emerges by employing a simple fracture mechanics description contrasting the crack driving force for transient stress fields with R-curve behavior.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1994 |
| Autor(en): | Schön, Stefan ; Prielipp, Helge ; Janssen, Rolf ; Rödel, Jürgen ; Claussen, Nils |
| Art des Eintrags: | Bibliographie |
| Titel: | Effect of Microstructural Scale on Thermal Shock Resistance of Aluminum-Reinforced Alumina |
| Sprache: | Englisch |
| Publikationsjahr: | März 1994 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 77 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1111/j.1151-2916.1994.tb05352.x |
| Kurzbeschreibung (Abstract): | Thermal shock data are presented for two types of Al/Al2O3 composites (35 vol% Al) with different microstructural scale and compared to a monolithic alumina. The fine-scale Al/A12O3 material exhibits high room-temperature strength (765 MPa) and a gradual decrease in retained strength with increasing quenching temperature difference, δT, and improved thermal shock resistance—as compared to monolithic alumina—even at δT= 600°C. The coarse-scale Al/Al2O3 composite shows high long-crack fracture toughness (10.5 MPa·m1/2) and almost no strength degradation up to δT= 500°C. A qualitative picture for the effect of microstructural scale on thermal shock resistance emerges by employing a simple fracture mechanics description contrasting the crack driving force for transient stress fields with R-curve behavior. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 15 Jun 2012 08:49 |
| Letzte Änderung: | 05 Mär 2013 10:01 |
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