|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Microstructure Evolution and Stability of Nanostructured Electrodeposited Al-Mn Alloys upon Heating
||Ting-Yun Huang, Christopher Schuh
|On-Site Speaker (Planned)
Nanocrystalline alloys have attracted interest for their improved mechanical strength, but structural stability has always been an issue. In this work, bulk aluminum-manganese nanocrystalline alloys have been synthesized using room temperature ionic liquid electrodeposition, by which various nanostructures can be created by controlling the Mn solute incorporation level. The manganese exhibits grain boundary segregation in the Al-Mn solid solution in the as-deposited condition, which should contribute to improved stability of the nanostructure. Upon heating, a variety of interesting phase changes occur in this alloy, and this talk will review the time-temperature relationships of these reactions. We use a combination of x-ray diffraction methods, transmission electron microscopy, as well as differential thermal calorimetry to understand the phase transformation mechanisms and grain growth processes. The development of solute segregation at grain boundaries is also discussed via simulation methods.
||Planned: A print-only volume