Author:
Heathcote J.,Odette G. R.,Lucas G. E.,Rowe R. G.
Abstract
AbstractTensile strengths, static and dynamic fracture toughness, and fatigue crack propagation were measured for different combinations of Nb metal-intermetallic microlaminate composites. Metal layer bridging produced toughening by factors of 2 to 5 under static conditions. Dynamic testing reduced the toughness significantly. Fatigue crack propagation rates were comparable to data for pure Nb. A key composite property, the stress -displacement function σ(u) of the constrained metal layers, was evaluated by several techniques and used in a bridging-crack stability analysis to predict tensile strengths in agreement with experimental values. The results provide guidelines for improving microlaminate performance.
Publisher
Springer Science and Business Media LLC
Reference16 articles.
1. The deformation and fracture of constrained metal sheets
2. Crack Growth in a ductile-phase-toughened in situ intermetallic composite under monotonic and cyclic loading
3. 12. Edsinger K. , Odette G. R. , Lucas G. E. , Wirth B. , B., Effects of Radiation in Materials:17th International Symposium, Gelles D. , Nanstad R. , Kumar A. , Little E. , Editors, ASTMSTP-1270, (in press).
4. A test procedure for characterizing the toughening of brittle intermetallics by ductile reinforcements
5. Ductile reinforcement toughening of γ-TiAl: Effects of debonding and ductility
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