Dynamic grain growth: A restoration mechanism in 99. 999 Al

Journal Article · Sat May 15 00:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90472-5· OSTI ID:6788931

McQueen, H J ^[1]; Blum, W; Straub, S ^[2]; Kassner, M E ^[3]

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1. Concordia Univ., Montreal, Quebec (Canada)
2. Univ. Erlangen-Nuernberg (Germany)
3. Oregon State Univ., Corvallis (United States)

Aluminum and its alloys are noted for the high level of dynamic recovery (DRV) in ambient and high temperature deformation (T[sub D]). The preponderance of evidence is that they do not undergo dynamic recrystallization (DRX) except under special circumstances. However, the same alloys undergo static recrystallization (SRX) upon annealing (T[sub A]), which includes holding after hot deformation, even though static recovery (SRV) considerably reduces the dislocation density under circumstances where DRV has been so high as to inhibit DRX. Discontinuous recrystallization is inferred unless otherwise stated. The factors that influence these mechanisms are examined to see why DRX does not occur although SRX does and if DRX could be induced by augmented grain boundary (GB) mobility through an increase in purity which does not significantly increase DRV. Comments will then be made on the reports of DRX in 99.999 Al by Yamagata.

• OSTI ID: 6788931
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 28:10; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
GRAIN GROWTH
ALUMINIUM BASE ALLOYS
ANNEALING
DATA ANALYSIS
DEFORMATION
DISLOCATIONS
GRAIN BOUNDARIES
RECRYSTALLIZATION
ALLOYS
ALUMINIUM ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
HEAT TREATMENTS
LINE DEFECTS
METALS
MICROSTRUCTURE
360102* - Metals & Alloys- Structure & Phase Studies