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Early stages of precipitation and microstructure control in Mg–rare earth alloys
Hardening precipitation frequently occurs in Mg-Rare Earth (RE) alloys after heat treatment in the 150°C-200°C range. Early stages of precipitation have been studied in detail by transmission electron microscopy in two Mg-RE alloys (Mg-Y-Gd and Mg-Y-Nd). Two types of structures may be involved in the precipitation sequence: a DO 19 phase and the so-called orthorhombic β' phase. The structural relationship between DO 19 and β' phases has been established in underaged and overaged states from thedoi:10.1080/14786430600557193 fatcat:nl2n3ibzdfbxjewb2a5zw7vhbe