Research on Technology and Microstructure Performance in Profile Extrusion of AZ31 Mg-Alloy

Abstract:

Article Preview

Aimed at characteristics of the profile such as complex shape, high dimensional accuracy and mechanical properties, the reduction zone length and devided flow taper of female die were designed by FEM and extrusion experiments were carried out for as-cast AZ31 magnesium alloy. Technological parameters were determined and microstructure and properties of the extruded profile were examined. The results show that magnesium alloy profile can be extruded if technological parameters such as deformation temperature, tool temperature and ratio of extrusion are controlled strictly. Each of the above mentioned technological parameters has its different influence on microstructure and properties of extruded profile. In comparison with as-cast alloys, microstructure is refined from 120~140μm to about 10μm and tensile strength is enhanced from 171~200MPa to above 260Mpa. This suggests that fine grain and high strength are attained for AZ31 magnesium alloy by extrusion deformation. The extruded profile can meet high properties demands for carrying parts. It provides a possibility for broader usage of magnesium alloy profiles.

Info:

Periodical:

Materials Science Forum (Volumes 488-489)

Edited by:

W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo

Pages:

519-522

Citation:

Q. Wang et al., "Research on Technology and Microstructure Performance in Profile Extrusion of AZ31 Mg-Alloy", Materials Science Forum, Vols. 488-489, pp. 519-522, 2005

Online since:

July 2005

Export:

Price:

$38.00

[1] Aghion E, Bronfin B: Magnesium Alloys Development to towards the 21st Century. Mater Sci. Forum, 2000, 350-351: 19-28.

DOI: https://doi.org/10.4028/www.scientific.net/msf.350-351.19

[2] R. Decker, R. Carnahan, R. Vining, D. Walukas and N. Prewitt: Magnesium Alloys and Their Applications, Edited by B.L. Mordike and K.U. Kainer, Werkstoff-Informationsgesellschaft mbH, Frankfurt, (1998), p.545.

[3] K. Kubota, M. Mabuchi and K. Higashi: J. Mater. Sci., 1999, 34, 2255.

[4] T. Mohri, M. Mabuchi,N. Saito and M. Nakamura: Mater. Sci. Eng., 1998, A257, 287.

[5] Cisar Lawrence, Yoshida Yu, Kamado Shigeharu, Kojima Yo and Watanabe Fukashi: Microstructures and Tensile Properties of ECAE-processed and Forged AZ31 Magnesium Alloy, Materials Transactions Vol. 44( 2003), pp.476-483.

DOI: https://doi.org/10.2320/matertrans.44.476

[6] J. Becker, G. fischer and K. Schemme: Light Weight Construction using Extruded and Forged Semi-Finished Products Made of Magnesium Alloys. in Mordike B L, Kainer K U(ed). Papers Presented at the Conference Magnesium Alloys and their applications. Wolfsburg(germany): (1998).

DOI: https://doi.org/10.1002/3527602046.ch6

[7] B. Closset: Magnesium Alloys and Their Applications, Edited by B.L. Mordike and K.U. Kainer, Werkstoff-Informationsgesellschaft mbH, Frankfurt, (2003), pp.274-279.