DTIC AD0406629: FATIGUE OF COPPER ZINC ALLOYS pdf

DTIC AD0406629: FATIGUE OF COPPER ZINC ALLOYS

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Fatigue tests were conducted to determine the S-N diagrams for a series of copper-zinc alloys at 100 K. An attempt was made to relate the endurance limit behavior to both stacking fault energy and yield strength, but no simple relationship was found. It is suggested that high stacking fault energy increases the cyclic work hardening rate by increasing the probability of dislocation intersection and jog formation. The increase in work hardening rate is reflected in a decrease in plastic strain amplitude, and a subsequent increase in fatigue life. The argu ments are bounded on one side by considerations of the yield strength of the alloys, and on the other side by consideration of the dominant mechanisms operative in short and long life fatigue

• Creator/s: Defense Technical Information Center
• Date: 4/1/1963
• Year: 1963
• Book Topics/Themes: DTIC Archive, Roberson, J A, AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH METALS AND CERAMICS LAB, *COPPER ALLOYS, *FATIGUE(MECHANICS), *ZINC ALLOYS, MECHANICAL PROPERTIES, CRYSTAL DEFECTS, BRASS, MECHANICAL WORKING, CRYOGENICS, HARDENING, PLASTIC PROPERTIES, DEFORMATION

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