AN INVESTIGATION OF FATIGUE AND FRACTURE IN NIAL-MO COMPOSITES

Authors
RAMASUNDARAM P BOWMAN R SOBOYEJO W
Citation
P. Ramasundaram et al., AN INVESTIGATION OF FATIGUE AND FRACTURE IN NIAL-MO COMPOSITES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 248(1-2), 1998, pp. 132-146
Citations number
27
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
248
Issue
1-2
Year of publication
1998
Pages
132 - 146
Database
ISI
SICI code
0921-5093(1998)248:1-2<132:AIOFAF>2.0.ZU;2-I
Abstract
The effects of reinforcement morphology (particulate versus fibers) an d particulate volume fraction on the fatigue and fracture behavior of NiAl-Mo composites are discussed. The improved fracture toughness obse rved in these composites are not associated with improved tensile duct ility. The improved fracture toughness levels are explained by quantif ying the shielding contributions due to crack trapping mechanisms. Sta ble crack growth under cyclic loading was observed at room temperature in all the NiAl-Mo composites that were studied. The potential implic ations of the results are discussed for future composite development. (C) 1998 Elsevier Science S.A. All rights reserved.