Prielipp, Helge ; Knechtel, Mathias ; Claussen, Nils ; Streiffer, S. K. ; Müllejans, H. ; Rühle, M. ; Rödel, Jürgen (1995)
Strength and fracture toughness of a aluminum/alumina composites with interpenetrating networks.
In: Materials science and engineering. A, 197 (1)
doi: 10.1016/0921-5093(94)09771-2
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The mechanical properties of metal reinforced ceramics, especially Al/Al2O3 composites with interpenetrating networks, are described. Key parameters to tailor the characteristics of these materials are the ligament diameter and volume fraction of ductile reinforcement. Fracture strength and fracture toughness data are given as a function of both variables and are compared with the corresponding values for the porous preforms. A simple model accounts for the influence of metal volume and metal ligament diameter on the plateau toughness of the composites. The increase in fracture strength from the porous preform to the composite is found to be much larger than the gain which can be predicted from the increase in fracture toughness alone. A discussion of fracture strength in these composites therefore must include at least two issues, crack propagation through the matrix as well as crack initiation at metal filled pores.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1995 |
| Autor(en): | Prielipp, Helge ; Knechtel, Mathias ; Claussen, Nils ; Streiffer, S. K. ; Müllejans, H. ; Rühle, M. ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Strength and fracture toughness of a aluminum/alumina composites with interpenetrating networks |
| Sprache: | Englisch |
| Publikationsjahr: | Juni 1995 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials science and engineering. A |
| Jahrgang/Volume einer Zeitschrift: | 197 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1016/0921-5093(94)09771-2 |
| Kurzbeschreibung (Abstract): | The mechanical properties of metal reinforced ceramics, especially Al/Al2O3 composites with interpenetrating networks, are described. Key parameters to tailor the characteristics of these materials are the ligament diameter and volume fraction of ductile reinforcement. Fracture strength and fracture toughness data are given as a function of both variables and are compared with the corresponding values for the porous preforms. A simple model accounts for the influence of metal volume and metal ligament diameter on the plateau toughness of the composites. The increase in fracture strength from the porous preform to the composite is found to be much larger than the gain which can be predicted from the increase in fracture toughness alone. A discussion of fracture strength in these composites therefore must include at least two issues, crack propagation through the matrix as well as crack initiation at metal filled pores. |
| Freie Schlagworte: | BRITTLE-MATRIX COMPOSITES; DUCTILE REINFORCEMENTS; CERAMIC COMPOSITES; CRACK DEFLECTION; RESISTANCE |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Fachbereich Materialwissenschaft (1999 aufgegangen in 11 Fachbereich Material- und Geowissenschaften) |
| Hinterlegungsdatum: | 19 Nov 2008 15:58 |
| Letzte Änderung: | 20 Feb 2020 13:31 |
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