On the role of grain boundary character distribution in grain growth of Al-Mg alloys

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(96)00209-1· OSTI ID:455247

Matsumoto, K; Shibayanagi, T; Umakoshi, Y ^[1]

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1. Osaka Univ., Suita, Osaka (Japan)

Grain growth behavior of recrystallized Al-Mg alloys containing 0.3 and 2.7 mass% Mg was investigated, focusing on the interconnection between development of the texture and grain boundary character distribution. An Al-0.3 mass% Mg alloy showed two stages in the change of microstructure during grain growth: the frequency of cube oriented grains and the {Sigma}1 boundary significantly increased at an early stage and then decreased. In the second stage a small amount of isolated large grains with the non-cube component grew and consumed the surrounding cube grains. In contrast, the frequency of cube oriented grains and the grain boundary character distribution showed no significant change during grain growth of Al-2.7 mass% Mg. Small clusters composed of several cube grains containing {Sigma}1 boundaries were formed and their spatial distribution played an important role in the change of microstructure during grain growth. The effect of the spatial distribution on the grain growth behavior was discussed considering the energy balance at triple junctions of grain boundaries.

• OSTI ID: 455247
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 2 Vol. 45; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
ENERGY BALANCE
EXPERIMENTAL DATA
GRAIN BOUNDARIES
GRAIN GROWTH
MAGNESIUM ALLOYS
SPATIAL DISTRIBUTION