Precipitation strengthening in Mg-Sn alloys with multiple precipitate types

ABSTRACT

Peak-aged Mg-6Sn, Mg-6Sn-3Al and Mg-6Sn-3Zn (wt.%) alloys have been characterised mechanically using micro-pillar compression and microstructurally using TEM. These alloys contain more than one type of precipitate. A modified Orowan equation is proposed to quantify the strengthening behaviour of the containing multiple precipitate types. The as-estimated values agree adequately with the experimental results.

KEYWORDS:

• Magnesium alloys
• precipitation
• strengthening mechanisms
• micro-pillar compression
• Orowan strengthening and dislocations

Acknowledgments

The first author is grateful for financial support from the Chinese Scholarship Council (CSC) and the University of Birmingham.

Disclosure statement

No potential conflict of interest was reported by the author(s).