Dispersoid Formation and Recrystallization Behavior in an Al-Mg-Si-Mn Alloy

材料科学技术（英文）, 2010, 26(3): 237-243.

^1, , ^2, , ^3, , ^4, , ^5,

1.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

2.Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

3.Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

4.Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

5.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Dispersoid Formation and Recrystallization Behavior in an Al-Mg-Si-Mn Alloy

Rong Hi ^1, , Tomo Ogura ^2, , Hiroyasu Tezuka ^3, , Tatsuo Sato ^4, , Qing Liu ^5,

1.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

2.Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

3.Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

4.Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Tokyo, Japan

5.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Keywords： Mn-containing dispersoids

The nucleation and preapitation of Mn-containing dispersoids in an Al-Mg-Si-Mn alloy (6082) have been studied by optical microscopy, EPMA (electron probe microanalysis) and TEM (transmission electron microscopy).The influence of Mn-containing dispersoids on the recrystallization behavior was also investigated. The size and distribution of dispersoids were strongly affected by both the homogenization process and the alloying element distribution formed in the direct chill cast procedure. The Mn-containing dispersoids were observed to nucleate preferentially on the β'-Mg_2Si phase and to be aligned along the <100> direction of the matrix.After cold deformation, the morphology of dispersoids greatly influences the recrystallization and grain growth behavior in the annealing process.

参考文献

[1]	C. D. MARIOARA;S. J. ANDERSEN;J. JANSEN .ATOMIC MODEL FOR GP-ZONES IN A 6082 Al-Mg-Si SYSTEM[J].Acta materialia,2001(2):321-328.
[2]	L. P. Troeger;E. A. Starke Jr. .Particle-stimulated nucleation of recrystallization for grain-size control and superplasticity in an Al-Mg-Si-Cu alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):19-29.
[3]	W. Eidhed;C. Limmaneevichitr;H. Tezuka .The Development of New Al-Mg-Si Alloys for Thixoforming[J].Materials Science Forum,2006(Pt.1):377-382.

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Dispersoid Formation and Recrystallization Behavior in an Al-Mg-Si-Mn Alloy

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