Abstract
In spite of the closeness of the critical temperature for disorder to the melting point of a range of Fe-Si alloys, it was possible to produce disordered Fe-Si samples ranging in silicon content from about 8 to 28 atomic pet. The critical temperature for disorder was found to be highest for the stoichiometric composition of Fe3Si. In comparison with ordered Fe3AI# the Fe3Si superstructure exhibits considerably greater thermal stability. This has been attributed in part to differences in sizes of the respective solute atoms apparently resulting in varying degrees of lattice distortions with considerable influence on the relative ordering tendencies to reduce lattice strains. The physical properties of ordered and disordered Fe-Si alloys were compared. High temperature electrical resistivity measurements indicated that although Fe-AI and Fe-Si alloys differed with respect to the relative thermal stability of their superlattices, the ordering mechanism for these alloys follows the same pattern.
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FRANK W. GLASER, Junior Member AIME, formerly Vice President, American Electro Metal Corp.
TP 4278E. Manuscript, Mar. 14, 1955. Cleveland Meeting, October 1956.
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Glaser, F.W., Ivanick, W. Study of the Fe-Si Order-Disorder Transformation. JOM 8, 1290–1295 (1956). https://doi.org/10.1007/BF03377868
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DOI: https://doi.org/10.1007/BF03377868