ω-Assisted α nucleation in a metastable β titanium alloy
Abstract
Here, we explore mechanisms of ω-assisted α nucleation for microstructure refinement in a metastable β titanium alloy, Ti-20V (wt%). In particular, we analyze quantitatively the individual and combined effects of concentration and stress fields associated with a growing isothermal ω precipitate and the potency of the ω/β interface on the activation energy barrier for α nucleation as a function of the ω precipitate size and coherency state. We find that the complex interplay among these three factors determines the most potent ω particle size for inducing α nucleation and the most favorable nucleation site.
- Authors:
-
- The Ohio State Univ., Columbus, OH (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- The Ohio State Univ., Columbus, OH (United States)
- Univ. of North Texas, Denton, TX (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- OSTI Identifier:
- 1562370
- Report Number(s):
- LLNL-JRNL-774022
Journal ID: ISSN 1359-6462; 966476; TRN: US2000689
- Grant/Contract Number:
- AC52-07NA27344; DMR-1309270; DMR-1435483
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scripta Materialia
- Additional Journal Information:
- Journal Volume: 171; Journal Issue: C; Journal ID: ISSN 1359-6462
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Heterogeneous nucleation; Interphase interface; Precipitation; Phase-field simulation; High resolution scanning transmission electron microscopy
Citation Formats
Shi, Rongpei, Zheng, Yufeng, Banerjee, Rajarshi, Fraser, Hamish L., and Wang, Yunzhi. ω-Assisted α nucleation in a metastable β titanium alloy. United States: N. p., 2019.
Web. doi:10.1016/j.scriptamat.2019.06.020.
Shi, Rongpei, Zheng, Yufeng, Banerjee, Rajarshi, Fraser, Hamish L., & Wang, Yunzhi. ω-Assisted α nucleation in a metastable β titanium alloy. United States. https://doi.org/10.1016/j.scriptamat.2019.06.020
Shi, Rongpei, Zheng, Yufeng, Banerjee, Rajarshi, Fraser, Hamish L., and Wang, Yunzhi. Fri .
"ω-Assisted α nucleation in a metastable β titanium alloy". United States. https://doi.org/10.1016/j.scriptamat.2019.06.020. https://www.osti.gov/servlets/purl/1562370.
@article{osti_1562370,
title = {ω-Assisted α nucleation in a metastable β titanium alloy},
author = {Shi, Rongpei and Zheng, Yufeng and Banerjee, Rajarshi and Fraser, Hamish L. and Wang, Yunzhi},
abstractNote = {Here, we explore mechanisms of ω-assisted α nucleation for microstructure refinement in a metastable β titanium alloy, Ti-20V (wt%). In particular, we analyze quantitatively the individual and combined effects of concentration and stress fields associated with a growing isothermal ω precipitate and the potency of the ω/β interface on the activation energy barrier for α nucleation as a function of the ω precipitate size and coherency state. We find that the complex interplay among these three factors determines the most potent ω particle size for inducing α nucleation and the most favorable nucleation site.},
doi = {10.1016/j.scriptamat.2019.06.020},
journal = {Scripta Materialia},
number = C,
volume = 171,
place = {United States},
year = {Fri Jun 28 00:00:00 EDT 2019},
month = {Fri Jun 28 00:00:00 EDT 2019}
}
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Cited by: 26 works
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Figures / Tables:
Fig. 1: Variation of the chemical driving forces for α nucleation as a function of V concentration in the β matrix at 375°C.
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.