|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light Metals
||Processing-structure-property Relations in Powder Metallurgy Mg97Zn1Y2 Alloys
||R Sadangi, D Kapoor, T Zahrah, R Tandon, D Madan
|On-Site Speaker (Planned)
Rapid solidification technology has been applied to a number of magnesium compositions in an effort to increase solubility limits and microstructrural homogeneity. Inoue et al. have developed a Mg97Y2Zn1 (at.%) alloys with yield strength (~610 MPa) with 5% of elongation. We have been investigating alternate powder processing methods of this ternary alloy composition via mechanical alloying and gas atomization. Prior work focused on synthesis and processing of the ternary alloys via mechanical alloying. Current work is focused on consolidation of commercially available gas-atomized powders by a two-step consolidation process: (a) Hot Isostatic Pressing (HIP), and (b) Extrusion. The HIP-ed materials display inferior mechanical properties as the prior-particle boundaries provide path for easy crack propagation. Extruded structures show significant property improvements through redistribution of prior particle boundaries. This paper compares the structure and properties of powder metallurgy Mg97Zn1Y2 alloys, obtained via the two processing methods.
||Planned: EPD Congress Volume