|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||A Study of Phase Equilibria and Interdiffusion in Iron-based Alloy Systems Using Diffusion Multiples
||Christopher Eastman, Ji-Cheng Zhao
|On-Site Speaker (Planned)
The diffusion-multiple approach is utilized to characterize the interactions of alloying elements and second phase particles in iron-based compositions. An aluminum nitride wafer is employed as a component of the diffusion multiple in order to evaluate the stability and composition/stoichiometry of aluminum nitride in alloy steels. Diffusion annealing is carried out at 1230 °C for 60 hours and the sample is examined using optical microscopy, energy dispersive X-ray spectroscopy, and electron probe microanalysis to identify the phases, obtain composition profiles, and create multicomponent isothermal phase diagrams. A forward-simulation method is applied to evaluate the impurity and interdiffusion coefficients for many of the binary systems. The information will be very valuable for the design and optimization of AlN and second phase particle-strengthened steels.
||Planned: A print-only volume