Direct observation of the development of recrystallization texture in commercial purity aluminum

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(93)90117-B· OSTI ID:6190014

Doherty, R D; Kashyap, K ^[1]; Panchanadeeswaran, S ^[2]

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1. Drexel Univ., Philadelphia, PA (United States). Dept. of Materials Engineering
2. Alcoa Technical Center, PA (United States)

To test if oriented nucleation or oriented growth causes recrystallization texture, orientations of new grains were measured in a study of cube texture in commercial-purity aluminum after warm, near plane-strain, extrusion. After full and partial recrystallization the frequency of near-cube grains (within 20[degree] of cube) was very high, 40-75%, compared to the 4% frequency expected for random nucleation. The mean sizes of near and non-cube grains were however indistinguishable at all stages of recrystallization. Quantitative (ODF) studies of the textures of just new grains after partial recrystallization showed cube intensities of 48, 30 and 24 (times random) and values of 16 and 24 after 100% recrystallization. Brief studies of cold-rolled Al, which gave negligible cube texture showed near random frequency of cube nuclei on partial recrystallization. The present study, with that of Hjelen et al. shows that strong cube textures in polycrystalline aluminum come from oriented nucleation.

• OSTI ID: 6190014
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 41:10; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALUMINIUM
CRYSTALS
DEFORMATION
ELEMENTS
GRAIN ORIENTATION
METALS
MICROSTRUCTURE
ORIENTATION
POLYCRYSTALS
RECRYSTALLIZATION
TEXTURE