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On the Critical Resolved Shear Stress of Solid Solutions Containing Coherent Precipitates
Author(s) -
Gerold V.,
Haberkorn H.
Publication year - 1966
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19660160234
Subject(s) - materials science , critical resolved shear stress , shear (geology) , solid solution , enhanced data rates for gsm evolution , shear stress , strengthening mechanisms of materials , condensed matter physics , crystallography , composite material , metallurgy , microstructure , chemistry , physics , shear rate , rheology , telecommunications , computer science
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.