On the effect of fine second-phase particles on primary recrystallization as a function of strain

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(96)00215-7· OSTI ID:455248

Mandal, D; Baker, I ^[1]

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1. Dartmouth Coll., Hanover, NH (United States). Thayer School of Engineering

Some alloys containing fine, undeformable, second-phase particles (typically, 25 nm < diameter < 1 {micro}m; 8 nm < interparticle-spacing < 0.5 {micro}m) can display either accelerated or retarded recrystallization depending on the particle dispersion parameters. The recrystallization of a series of such alloys, internally oxidized (12)[11{bar 1}] single crystal plates of copper containing SiO{sub 2} particles, has been examined over a range of true strains from 32% to 335%. The stored energies and recrystallization temperatures have been measured at various strain levels using differential scanning calorimetry. A model to explain the recrystallization kinetics based on a balance between the extra stored energy of deformation due to the geometrically-necessary dislocations associated with the particles and particle pinning is presented. The experimental results are found to be in reasonable agreement with this model.

• Sponsoring Organization: National Science Foundation, Washington, DC (United States)
• OSTI ID: 455248
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 2 Vol. 45; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
EXPERIMENTAL DATA
KINETICS
MATHEMATICAL MODELS
PARTICULATES
RECRYSTALLIZATION
SILICON OXIDES
STRAINS
VALIDATION