X-ray diffraction study of changes in stress-strain distributions during the fatigue of a two-phase alloy

In annealed two-phase brass, push-pull fatigue at loads near the endurance limit produces residual stresses only in the softer majority α phase and not in the β phase. These stresses are balanced between undeformed α phase regions and a small fraction of deformed α; the β phase is not involved in th...

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Bibliographic Details
Published in:Materials science and engineering 1986-05, Vol.79 (2), p.149-155
Main Authors: Noyan, I.C., Cohen, J.B.
Format: Article
Language:English
Subjects:
Analysing. Testing. Standards
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fatigue
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Production techniques
Specific materials
Stress analysis
Surface hardening by mechanical treatment
Surface treatment
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Description
Summary:In annealed two-phase brass, push-pull fatigue at loads near the endurance limit produces residual stresses only in the softer majority α phase and not in the β phase. These stresses are balanced between undeformed α phase regions and a small fraction of deformed α; the β phase is not involved in this balance. The uniform deformation produced by peening becomes inhomogeneous during fatigue, especially in the softer α phase. This inhomogeneity of deformation is greater after fatigue of the peened specimens than after fatigue of annealed material.
ISSN:0025-5416
DOI:10.1016/0025-5416(86)90398-8