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Focused Development of Magnesium Alloys Using the Calphad Approach
Author(s) -
SchmidFetzer R.,
Gröbner J.
Publication year - 2001
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/1527-2648(200112)3:12<947::aid-adem947>3.0.co;2-p
Subject(s) - calphad , materials science , thermochemistry , magnesium , alloy , metallurgy , phase diagram , thermodynamics , phase (matter) , chemistry , physics , organic chemistry
In traditional alloy development, experimental investigations with many different alloy compositions are performed. The selection criteria for multicomponent alloying elements and their compositions become diffuse in a traditional approach. Computational thermochemistry as used in the Calphad approach can provide a clear guideline for such selections and helps to avoid large scale experiments with less promising alloys. Thus, it is a powerful tool to cut down on cost and time during development of Mg‐alloys. An overview of the Calphad method is given. As an example of applications, recent developments of new creep resistant magnesium alloys that show about 100 times less creep than the best commercial alloys are reported. Also outlined are the methods used in our long‐term project of construction of the necessary thermodynamic magnesium alloy database for several alloying elements, such as Al, Li, Si, Mn, Ca, Sc, Y, and Zr, and rare earth elements (Ce, Gd, Nd), using the Calphad method combined with key experiments.