Strain distributions in cold-worked-α-PbSb alloys from X-ray line profile analysis

• Published in: Journal of alloys and compounds 1999-03, Vol.284 (1-2), p.160-165
• Main Authors: Chatterjee, Partha, Bhattacharyya, Partha S., Gupta, S.P.Sen
• Format: Article
• Language: English
• Subjects: Applied sciences; Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization; Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Cold-Work; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Metals. Metallurgy; Microstrains; Pb–Sb alloy; Physics; Profile analysis; Treatment of materials and its effects on microstructure and properties; X-ray diffraction
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/S0925-8388(98)00880-9

A detailed X-ray profile-fitting study of cold-worked Pb–Sb alloy in the α-phase is presented using a Pseudo-Voigt profile shape-function. Warren–Averbach's line-profile analysis reveals that the deformation process has a minimal effect on the microstructure, characterised by large coherent domain size (∼800–1000 Å), small microstrains, negligible planar fault probability. Interpretation of the variation of column strains in terms of local strains and strain derivatives show that dislocation arrangement and also the Sb precipitates (if any) modifies the mean-square strain derivatives. The dislocation densities are of the order of 1010 cm/cm3. The effect of recovery is noticed and the possible mode of recovery appears to be polygonization of the dislocation.