Gibbs free energy difference between the undercooled liquid and the β phase of a Ti-Cr alloy
Year: 1992
Type: article
Abstract: The heat of fusion and the specific heats of the solid and liquid have been experimentally determined for a Ti60Cr40 alloy. The data is used to evaluate the Gibbs free energy difference, ΔG, between the liquid and the β phase as a function of temperature to verify a reported spontaneous vitrification (SV) of the β phase in Ti-Cr alloys. The results show that SV of an undistorted β phase in the Ti60Cr40 alloy at 873 K is not feasible because ΔG is positive at the temperature. However, ΔG may become negative with additional excess free energy to the β phase in the form of defects.
Source: Applied Physics Letters
DOI: 10.1063/1.106450
Authors: K. Ohsaka, E. H. Trinh, J. C. Holzer, W. L. Johnson
Institutions: California Institute of Technology, Jet Propulsion Laboratory
Language: English
Subfield: Metals and Alloys
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2059944408