Grain boundary migration in Fe-3.5% Si bicrystals with [001] tilt boundaries

Journal Article · Fri Jul 24 00:00:00 EDT 1998 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(98)00105-0· OSTI ID:634657

Furtkamp, M; Gottstein, G; Molodov, D A ^[1]; Semenov, V N ^[2]; Shvindlerman, L S ^[3]

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1. RWTH Aachen (Germany). Inst. fuer Metallkunde und Metallphysik
2. Univ. Stuttgart (Germany). Inst. fuer Metallkunde
3. Russian Academy of Sciences, Moscow (Russian Federation). Inst. of Solid State Physics

Grain boundary (GB) migration was studied on Fe-3.5% Si bicrystals with [001] tilt boundaries with different angles, using both the Sun-Bauer technique and the constant driving force method. For the Sun-Bauer geometry, experimentally observed and theoretically predicted shapes of the GB were compared. For calculation of the GB shape the drag effect of impurities was taken into account. The interface mobility was determined in the temperature range from 1,217 to 1,377 K. In situ observation of the fastest migrating boundary confirmed the results obtained by conventional methods, and also corroborated the linear relation between GB velocity and driving force. The activation enthalpy and the logarithm of the pre-exponential factor, as derived for the different types of tilt boundaries studied, are linearly related, i.e., comply with the compensation effect. The obtained results were in good accordance with literature data of grain boundary mobility in Fe-3% Si bicrystals.

• OSTI ID: 634657
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 12 Vol. 46; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BICRYSTALS
GRAIN BOUNDARIES
GRAIN ORIENTATION
IMPURITIES
IRON BASE ALLOYS
MOBILITY
SILICON ALLOYS
TEMPERATURE RANGE 1000-4000 K