TU Darmstadt / ULB / TUbiblio

Strength and fracture toughness of a aluminum/alumina composites with interpenetrating networks

Prielipp, Helge ; Knechtel, Matthias ; Claussen, Nils ; Streiffer, SK. ; Müllejans, H. ; Rühle, M. ; Rödel, Jürgen :
Strength and fracture toughness of a aluminum/alumina composites with interpenetrating networks.
[Online-Edition: http://dx.doi.org/10.1016/0921-5093(94)09771-2]
In: Materials science and engineering. A, 197 (1) pp. 19-30.
[Artikel], (1995)

Offizielle URL: http://dx.doi.org/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.

Typ des Eintrags: Artikel
Erschienen: 1995
Autor(en): Prielipp, Helge ; Knechtel, Matthias ; Claussen, Nils ; Streiffer, SK. ; Müllejans, H. ; Rühle, M. ; Rödel, Jürgen
Titel: Strength and fracture toughness of a aluminum/alumina composites with interpenetrating networks
Sprache: Englisch
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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Materials science and engineering. A
Band: 197
(Heft-)Nummer: 1
Freie Schlagworte: BRITTLE-MATRIX COMPOSITES; DUCTILE REINFORCEMENTS; CERAMIC COMPOSITES; CRACK DEFLECTION; RESISTANCE
Fachbereich(e)/-gebiet(e): Fachbereich Material- und Geowissenschaften > Materialwissenschaften > Nichtmetallisch-Anorganische Werkstoffe
FB Materialwissenschaft (aufgegangen in FB11)
Fachbereich Material- und Geowissenschaften > Materialwissenschaften
Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 19 Nov 2008 15:58
Offizielle URL: http://dx.doi.org/10.1016/0921-5093(94)09771-2
ID-Nummer: 10.1016/0921-5093(94)09771-2
Export:

Optionen (nur für Redakteure)

Eintrag anzeigen Eintrag anzeigen