Journal
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
Volume 48, Issue -, Pages 123-130Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.calphad.2014.12.001
Keywords
Diffusion modeling; Kinetic database; Thermodynamics; Optimization; Assessment; DICTRA
Categories
Funding
- National Science Foundation, USA [DMR-0845868, DMR-1410883]
- Department of Energy Office of Science Graduate Fellowship Program [DE-AC05-06OR23100]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1410883, 0845868] Funding Source: National Science Foundation
Ask authors/readers for more resources
A database of atomic mobility parameters for single phase Mg-X (X=Ag, Al, Be, Cd, Ce, In, Fe, Ga, La, Mn, Ni, Sb, Sn, U, and Zn) systems was developed through the critical assessment of available Mg diffusion literature. Optimization of the binary diffusion activation energy terms for Ag, Al, Sn, and Zn solutes, as well as the Al-Zn interaction parameter were completed through the coupling of an existing thermodynamic database with the DICTRA software program. In general, agreement between simulated and experimental diffusion profiles was observed, although limitations for extrapolation to higher order systems were seen due to the limited multicomponent diffusion studies in Mg. This work, however, ultimately provides the foundation for the integration of diffusion simulations and predictions in future Mg alloy design. Further research to expand the current database, through either the experimental measurement or. simulation of multicomponent diffusion and diffusivity in other phases (e.g. inter-metallics, liquid), is expected to increase the database utility. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available