Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V
Abstract
Here we present our theoretical assessment of the kinetic pathways during phase transformations of multi-component Ti alloys. Employing the graphical thermodynamic approach and an integrated free energy function based on the realistic thermodynamic database and assuming that a displacive structural transformation occurs much faster than long-range diffusional processes, we analyze the phase stabilities of Ti-6Al-4V (Ti-6wt.%Al-4wt.%V). Our systematic analyses predict a variety of possible kinetic pathways for β to (α + β) transformations leading to different types of microstructures under various heat treatment conditions. In addition, the possibility of unconventional kinetic pathways is discussed. Lastly, we also briefly discuss the application of our approach to general multicomponent/multiphase alloy systems.
- Authors:
-
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Material Sciences and Engineering
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Science Division
- CompuTherm LLC, Madison, WI (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1262190
- Report Number(s):
- LLNL-JRNL-673240
Journal ID: ISSN 1547-7037
- Grant/Contract Number:
- AC52-07NA27344; FA8650-12-2-7230
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Phase Equilibria and Diffusion
- Additional Journal Information:
- Journal Volume: 37; Journal Issue: 1; Journal ID: ISSN 1547-7037
- Publisher:
- ASM International
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; alloys; kinetics; multicomponent; phase transformation; stability
Citation Formats
Ji, Yanzhou, Heo, Tae Wook, Zhang, Fan, and Chen, Long-Qing. Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V. United States: N. p., 2015.
Web. doi:10.1007/s11669-015-0436-9.
Ji, Yanzhou, Heo, Tae Wook, Zhang, Fan, & Chen, Long-Qing. Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V. United States. https://doi.org/10.1007/s11669-015-0436-9
Ji, Yanzhou, Heo, Tae Wook, Zhang, Fan, and Chen, Long-Qing. Mon .
"Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V". United States. https://doi.org/10.1007/s11669-015-0436-9. https://www.osti.gov/servlets/purl/1262190.
@article{osti_1262190,
title = {Theoretical Assessment on the Phase Transformation Kinetic Pathways of Multi-component Ti Alloys: Application to Ti-6Al-4V},
author = {Ji, Yanzhou and Heo, Tae Wook and Zhang, Fan and Chen, Long-Qing},
abstractNote = {Here we present our theoretical assessment of the kinetic pathways during phase transformations of multi-component Ti alloys. Employing the graphical thermodynamic approach and an integrated free energy function based on the realistic thermodynamic database and assuming that a displacive structural transformation occurs much faster than long-range diffusional processes, we analyze the phase stabilities of Ti-6Al-4V (Ti-6wt.%Al-4wt.%V). Our systematic analyses predict a variety of possible kinetic pathways for β to (α + β) transformations leading to different types of microstructures under various heat treatment conditions. In addition, the possibility of unconventional kinetic pathways is discussed. Lastly, we also briefly discuss the application of our approach to general multicomponent/multiphase alloy systems.},
doi = {10.1007/s11669-015-0436-9},
journal = {Journal of Phase Equilibria and Diffusion},
number = 1,
volume = 37,
place = {United States},
year = {Mon Dec 21 00:00:00 EST 2015},
month = {Mon Dec 21 00:00:00 EST 2015}
}
Web of Science
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