The Influence of Silicon Content on Recrystallization of Twin-Roll Cast Aluminum Alloys for Heat Exchangers

• Authors: M. Poková , M. Cieslar , J. Lacaze
• Languages of publication: EN

Abstracts

EN

Thin foils of aluminum alloys are commonly used in automotive industry for manufacturing heat exchangers. Use of twin-roll casting instead of direct-chill casting requires modifications in the manufacturing process and use of improved materials. In the present study, the evolution in microstructure and mechanical properties during isochronal annealing of two AW3003-based alloys differing in silicon content was monitored. The silicon influenced both the microhardness and precipitation kinetics during annealing, but not the recrystallization temperature. Precipitation of cubic α-Al_{15}(Mn,Fe)_3Si_2 phase occurred in two steps in the material with higher Si content, while mainly precipitates of Al_6(Mn,Fe) phase formed in the second material in a broad temperature interval, preferentially at grain boundaries.

Keywords

EN

81.40.Ef; 68.37.Lp; 81.30.Mh

Discipline

• 68.37.Lp: Transmission electron microscopy (TEM)
• 81.40.Ef: Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization
• 81.30.Mh: Solid-phase precipitation(for precipitation hardening, see 81.40.Cd)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 3
• Pages: 625-629

Dates

published

2012-09

Contributors

author

M. Poková

• Charles University in Prague, Faculty of Mathematics and Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
• CIRIMAT, ENSIACET, 5 allée Emile Monso, B.P. 44362, 31030 Toulouse cedex 4, France

author

M. Cieslar

• Charles University in Prague, Faculty of Mathematics and Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic

author

J. Lacaze

• CIRIMAT, ENSIACET, 5 allée Emile Monso, B.P. 44362, 31030 Toulouse cedex 4, France

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Identifiers

DOI

10.12693/APhysPolA.122.625