Computer simulation of recrystallization-III; Influence of a dispersion of fine particles

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(92)90062-J· OSTI ID:6759986

Rollet, A D ^[1]; Srolovitz, D J ^[2]; Anderson, M P ^[3]; Doherty, R D ^[4]

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1. Los Alamos National Lab., NM (United States). Materials Science and Technology Div.
2. Michigan Univ., Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
3. Exxon Research and Engineering Co., Annandale, NJ (United States)
4. Dept. of Materials Science and Engineering, Drexel Univ., Philadelphia, PA (United States)

This paper reports on two-dimensional Monte Carlo simulations of recrystallization which have been carried out in the presence of incoherent and immobile particles for a range of different particle fractions, a range of stored energies and a range of densities of potential nuclei (embryos). For stored energies greater than a critical value (H/J [gt] 1) the recrystallization front can readily pass the particles leading to a random density of particles on the front and a negligible influence of particles on the recrystallization kinetics. At lower stored energies the particles pin the recrystallization front leading to incomplete recrystallization. However at very low particle fractions, when the new grain has grown much larger than the matrix grains, before meeting any particles, the new grains can complete the consumption of the deformed grains giving complete recrystallization by a process that appears to be similar to abnormal grain growth. Particles are, as previously reported, very effective at pinning grain boundaries, both of the deformed and recrystallized grains, when boundaries migrate under essentially the driving force of boundary energy alone. Such boundaries show a density of particles that rises rapidly form the random value found t the start of the simulation.

• OSTI ID: 6759986
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 40:12; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
99 GENERAL AND MISCELLANEOUS
990200* -- Mathematics & Computers
CALCULATION METHODS
CHEMICAL REACTION KINETICS
COMPUTERIZED SIMULATION
CRYSTAL STRUCTURE
DISLOCATION PINNING
GRAIN BOUNDARIES
GRAIN GROWTH
GRAIN SIZE
KINETICS
MICROSTRUCTURE
MONTE CARLO METHOD
REACTION KINETICS
RECRYSTALLIZATION
SIMULATION
SIZE
TWO-DIMENSIONAL CALCULATIONS