SYMPOSIA PAPER Published: 01 January 1990
STP25402S

Fatigue Crack Growth in an Al O Short Fiber Reinforced Al-2Mg Alloy

Source

Metal matrix composites (Al-2Mg) reinforced with 10% by volume “Saffil” fibers were manufactured by a pressure infiltration technique. The initiation and growth of fatigue cracks in these composites were investigated by two methods.

Fatigue crack initiation and early crack growth were studied in smooth four-point bend specimens using replication techniques. The mechanisms of crack initiation were interpreted in terms of fiber interactions.

Fatigue crack growth behavior for long cracks was studied on CT-specimens. The long crack growth data for stress ratios R = 0. 05 and 0. 5 were correlated by incorporating measured values of crack closure into an effective driving force, ΔKeff.

Author Information

Preston, S
Swedish Institute for Metals Research, Stockholm, Sweden
Melander, A
Swedish Institute for Metals Research, Stockholm, Sweden
Groth, HL
The Royal Institute of Technology, Stockholm, Sweden
Blom, AF
The Royal Institute of Technology, Stockholm, Sweden
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Details
Developed by Committee: E08
Pages: 219–232
DOI: 10.1520/STP25402S
ISBN-EB: 978-0-8031-5138-3
ISBN-13: 978-0-8031-1385-5