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On the Critical Resolved Shear Stress of Solid Solutions Containing Coherent Precipitates
physica status solidi (b) · 1966 · Vol. 16(2) · pp. 675–684
V. Gerold✉(Max Planck Society)H. Haberkorn(Max Planck Society)
Abstract
Abstract A quantitative estimate is made of the increase Δτ 0 of the critical resolved shear stress for the case of solid solutions containing spherical and coherent precipitates. The interaction between edge dislocations and the coherency strain fields is believed to be the strengthening mechanism. The calculation is applied to experimental measurements on Al‐Zn and CuCo alloys. For small particles (R/b < 20) the dislocations tend to cut through the precipitates, whereas for larger particles the Orowan mechanism becomes predominant.
Microstructure and mechanical propertiesHigh-Velocity Impact and Material BehaviorMetal Forming Simulation TechniquesCritical resolved shear stressMaterials scienceSolid solutionStress (linguistics)MetallurgyComposite materialShear ratePhilosophyRheology
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