Development of recrystallization texture in IF-steel: An effort to explain developments in global texture from microtextural studies

Journal Article · Fri May 01 04:00:00 EDT 1998 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(97)00466-7· OSTI ID:616454

Samajdar, I; Verlinden, B; Houtte, P van ^[1]

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1. Katholieke Univ. Leuven, Heverlee (Belgium)

Development of the recrystallization texture in IF-steel was studied by global (X-ray diffraction) and local orientation measurements. While the X-ray orientation distribution functions (ODF) provided an overall picture of the textural changes, orientation imaging microscopy (OIM) results narrowed these to the respective changes in deformed and recrystallized regions. Globally, a gradual increase in the {gamma}-fiber (ND{parallel}<111>) was observed to coincide with a corresponding decrease in the {alpha}-fiber (RD {parallel} <110>) until 70% recrystallization; the rates were relatively faster during 70--96% recrystallization. During recrystallization, some of the {alpha}-regions/bands were consumed, while remaining {alpha}-regions were observed to coarsen noticeably. This may reduce the rate of {alpha} fiber decay, as consumption of some of the {alpha}-regions may get partially compensated by coarsening in others. After a certain amount of recrystallization (possibly 705 in this case), the {alpha}-regions may not coarsen any further and the decay may become faster. OIM observations also showed preferential nucleation of {gamma} grains, although globally no growth advantage for {gamma} was observed. An effort was made to estimate nucleation factors (defined as the number of grains of i orientation per i band, as measured/estimated along normal direction) for different orientations. Estimated nucleation factors not only provided an overall picture of the preferential nucleation, but possibly explained the slight strengthening in {gamma}-fiber recrystallization texture with increased annealing temperature.

• OSTI ID: 616454
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 8 Vol. 46; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
MICROSTRUCTURE
RECRYSTALLIZATION
STEELS
TEMPERATURE DEPENDENCE
TEXTURE