Paper Titles
Study on Microstructure and Properties of Mg-9Al-xZn Alloys
p.477
Microstructure, Texture and Deformation Behavior of Lithium Containing Magnesium Alloys
p.481
The Influence of the Stirrer's Shape and Process Parameter on Friction Stir Welded MB3 Magnesium Joining
p.485
Effects of Rolling Condition on Warm Deep Drawability of Magnesium Alloy Sheets Produced by Twin-Roll Strip Casting
p.489
Grain Refinement in AZ91E Magnesium Alloy by Thermo-Mechanical Treatments
p.493
In-Situ Solid-State Synthesis of Mg Composite with Mg2Si Dispersoids
p.497
Magnesium Foam Produced from Bulk AZ31 Magnesium Alloy Sheets
p.501
Surface Modification on Magnesium Alloys by Coating with Magnesium Fluorides
p.505
The Forming Process of Magnesium Alloy for Japanese Home Electric Components
p.509

Grain Refinement in AZ91E Magnesium Alloy by Thermo-Mechanical Treatments

Article Preview

Abstract:

In order to improve poor formability in magnesium alloy, grain refinement has been attempted on AZ91E alloy by a thermo-mechanical treatment. Specimens were firstly cold-rolled at 10 %, then solution heat treated at 673 K for 86.4 ks, and hot-rolled at 573 K with about 5 % for four passes, or hot-rolled at 20 % with one pass. The rolled specimens were finally heat treated at 473 to 673 K for 3.6 to 36 ks. Microstructures in the starting material characterized by grain boundary precipitates and aluminum rich regions with about 180 µm in grain size were changed into fine grained microstructures with about 10 to 30 µm in diameter, in which precipitates of Mg17Al12 were uniformly distributed. Although the specimen was prepared by rolling, the (0001) texture was not so remarkable.

You might also be interested in these eBooks
PRICM-5 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

493-496

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.493

Citation:

Cite this paper

Online since:

January 2005

Authors:

Atsushi Yamamoto, Masahiko Ikeda, Harushige Tsubakino

Keywords:

Grain Refinement, Magnesium Alloy, Microstructure, Precipitation, TEM, Thermo-Mechanical Treatment (TMT)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J. A. Chapman and D. V. Wilson: J. Inst. Metals Vol. 91 (1962-63), p.39.

Google Scholar

[2] V. M. Segal: Mater. Sci. Eng. A Vol. A197 (1995), p.157.

Google Scholar

[3] T. Mukai, M. Yamanoi, H. Watanabe and K. Higashi: Scr. Mater. Vol. 45 (2001).

Google Scholar

[4] R. Kaibyshev and O. Sitdikov: Z. Metallkd. Vol. 85 (1994), p.738.

Google Scholar

[5] M. Mabuchi, Y. Chino, H. Iwasaki, T. Aizawa and K. Higashi: Mater. Trans. Vol. 42 (2001), p.1182.

Google Scholar

[6] A. Yamamoto, M. Kakishiro, M. Ikeda and H. Tsubakino: Mater. Sci. Forum, Vol. 449-452 (2004), p.669.

Google Scholar

[7] A. Yamamoto and H. Tsubakino: Proc. LIGHT 3rd Inter. Conf. Light Materials for Transportation Systems, LiMAT-2003, (2004), (in press).

Google Scholar

[8] H. Watanabe, H. Tsutui, T. Mukai, K. Ishikawa, Y. Okanda, M. Kohzu and K. Higashi: Mater. Trans., Vol. 42 (2001).

Google Scholar