Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1601243 | Intermetallics | 2010 | 11 Pages |
Abstract
The forming ability of amorphous and glassy alloys has been assessed with mixing enthalpy (ÎHmix) of a liquid phase based on Miedema's scheme. The ÎHmix's were calculated as a function of composition in an alloy for possible 2628 binary systems from 73 elements, and were approximated with interaction parameter Ω in a sub-regular solution model with coefficients Ωi (i = 0 to 3) for a cubic function of composition. The results revealed that 2627 systems were fitted by Ωâ²s within errors denoted by statistical adjusted R-square (R2) â¥Â 0.999, which includes R2 = 1 for 2409 systems. The values of Ωi for 1378 systems from 53 elements were selected and tabulated for assessing the forming ability of amorphous and glassy alloys. The analysis revealed that P and C in Fe-P and Fe-C binary alloys and simultaneous additions of Ni and Cu in La-, Zr- and Pd-based bulk metallic glasses exhibit a marked and peculiar composition dependence of ÎHmix. In a framework of Miedema's scheme, the most accurate values of ÎHmix for a liquid phase have been provided as a function of composition in an alloy system, which makes it possible to consider the forming ability of amorphous and glassy alloys deeply.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
A. Takeuchi, A. Inoue,