MAGNESIUM ALLOYS WITH HIGH-MECANICAL RESISTANCE AND PROCESS FOR OBTAINING THEM BY RAPID SOLIDIFICATION

摘要

Magnesium alloy having a breaking load of at least 290 MPa, more particularly at least 330 MPa, having the following weight composition Al 2-11%, Zn 0-12%, Mn 0-0.6%, Ca 0-7%, but with at least the presence of Zn and / or Ca, having an average grain size of less than 3 mum, a homogeneous matrix reinforced by intermetallic compounds of size less than 1 mum precipitated at the joints of grains, this structure remaining unchanged after maintaining for 24 h at 200 ° C, and its production process by rapid solidification and consolidation by spinning at a temperature between 200 and 350 ° C.