Abstract
Water-quenched Cr 40Ti 60, high temperature bcc solid solution, vitrifies on subsequent annealing, and vitrification is confirmed by X-ray and TEM. The kinetics of the vitrification behavior in this system are investigated by means of X-ray diffraction. For qualitative analysis, using X-ray diffraction intensity, the internal standard method is used. The activation energy for spontaneous vitrification (SV) is obtained on the basis of the Johnson-Mehl-Avrami equation: it is ∼ 46.6 kcal/mol. From DTA experiments, the measured activation energy for the equilibrium phase formation of the water-quenched β-phase is 62.0 kcal/mol. It is suggested that SV precedes the formation of quilibrium phases due to the activation energy difference between the vitrification and the equilibration. It is proposed that the mechanisms of SV is closely related to the diffusion of the Cr atom in the shore range, and consequently the lattice distortion due to the motion of Cr atoms results in the vitrification.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
