The origin of recrystallization texture and the concept of micro-growth selection

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90380-8· OSTI ID:5509965

Vatne, H E; Nes, E ^[1]

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1. Norwegian Inst. of Tech., Trondheim (Norway). Dept. of Metallurgy

The rivalry between oriented nucleation and oriented growth has a long tradition in texture research. Despite the development of experimental techniques, like the 3-dimensional ODF-analysis and the EBSP-technique, this old controversy is still unresolved. EBSP is a powerful technique allowing investigations of the orientation of individual subgrains over large areas in a relatively short time, which makes orientation studies at the early stages of recrystallization easier. However, problems arise when studying nucleation and growth of recrystallized grains in terms of orientation relationships, because a successful nucleation event destroys the evidence of the nucleus state as well as its neighborhood. Therefore, due to this loss of evidence, processes like micro-growth selection'' introduced many years ago cannot be directly verified. In order to avoid this problem Duggan et al. did some interesting experiments on the formation of the cube texture in copper. Using a special etching technique which reveals (111)-planes, they determined the orientation of the neighboring substructures surrounding cube oriented microbands in heavily cold rolled copper. From this Duggan et al. concluded that the cube texture arises from the competition between nuclei having a variety of orientation environments, and the successful grains having environments into which they initially grow, characterized by a 0[degree]<111> orientation relationship. This process was described as micro-growth selection. Although the accuracy of the etching-technique used by Duggan et al. is only of the order of [approximately]10[degree], and they have used a broad and poorly defined 0[degree]<111> misorientation criterion, their findings will be assumed to be correct. Preliminary work, by the present authors, indicates the same effects in aluminum. What will be discussed in this paper is the interpretation of these results in terms of a concept labelled micro-growth selection.''

• OSTI ID: 5509965
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 30:3; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals &amp; Alloys-- Structure &amp; Phase Studies
ALUMINIUM
ELEMENTS
GRAIN BOUNDARIES
GRAIN GROWTH
GRAIN ORIENTATION
METALS
MICROSTRUCTURE
ORIENTATION
TEXTURE