Effect of Heat Treatment on the Microstructure and Creep Behavior of Mg-Sn-Ca Alloys

Author:

Leil Tarek Abu1,Huang Yuan Ding1,Dieringa Hajo1,Hort Norbert2,Kainer Karl Ulrich1,Buršík Jiří3,Jirásková Yvonna3,Rao K.P.4ORCID

Affiliation:

1. GKSS Forschungszentrum

2. GKSS Research Center Geesthacht GmbH

3. Central European Institute of Technology

4. City University of Hong Kong

Abstract

The development of new Mg-Sn based alloys that have shown improved corrosion resistance needs further investigations to develop standard alloys for industrial use. In the present study, the influence of heat treatment was investigated by examining the creep resistance of Mg-Sn and Mg-Sn-Ca alloys at 85 MPa under 135 °C identify the best conditions to improve the mechanical properties of such alloys. Additionally, the changes in microstructure of these alloys were studied and analysed by light microscopy, X-ray diffraction and scanning electron microscopy. It was found that the heat treatments can affect the microstructure of the binary alloy while no apparent change in the microstructure was found in the Mg-Sn-Ca alloys, indicating that the second phase CaMgSn is thermal stable in this alloy. Based on the obtained results, the relationship between the microstructure and creep behaviour are discussed.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference11 articles.

1. C. J. Bettles, M. A. Gibson, in Magnesium Alloys and Their Applications, edtied by K.U. Kainer, Weinheim, Germany, (2004).

2. M. Dargusch, The Role of Microstructure in the Creep of Die Cast Magnesium Alloys, Ph.D. Thesis, The University of Queensland, Brisbane, Australia (1998).

3. M. Dargusch, G.L. Dunlop and K. Pettersen in Magnesium Alloys and Their Applications, edtied by B.L. Mordike and K.U. Kainer, Wolfsburg, Germany, (1998).

4. M.O. Pekguleryuz and E. Baril: in Magnesium technology 2001, edtied by N. Hryn, Warrendale, PA, (2001), p.119.

5. R.T. Wood and H.R. Block, Great Britain Patent No. 380669, (1932).

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