|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Magnesium Technology 2016
||P-17: Quantification of Solid Solution Strengthening by Al, Zn, Gd and Y in Mg Alloys Investigated by Solid-to-Solid Diffusion Couples and Nanoindentation
||Catherine Kammerer, Kyu C. Cho, Yongho Sohn
|On-Site Speaker (Planned)
Solid-to-solid diffusion couple technique was used to fabricate combinatorial samples with continuous compositional variation of solutes in the Mg solid solution. Solutes examined in this study are Al, Zn, Gd and Y. Compositional variation in diffusion couples were determined by electron microprobe analysis, and analyzed for determination of interdiffusion and impurity diffusion coefficients. Composition dependence of elastic and plastic properties of Mg solid solutions was determined through analysis of nanoindentation load-displacement profiles by the Oliver-Pharr method. Anomalous strengthening efficacy of the Gd and Y was observed. Correlations among diffusion coefficients, mechanical behavior, and solute characteristics such as volumetric misfit and electron valences were examined and discussed in terms of solid solution strengthening and discontinuous yielding.
||Planned: A combination print-CD volume