Abstract
The stability of intermetallic second-phase particles (SPPs) in coated Zircaloy-2 was studied in 700 °C steam environments up to 20 hours. Hydrogen generated from high-temperature steam oxidation of uncoated Zr-induced δ-hydrides formation in the Zircaloy matrix. Synchrotron XRD demonstrated that longer exposure times increased hydride peak intensity and decreased intermetallic SPPs’ peak intensity. Cross-sectional SEM analysis verified the intermetallic SPPs’ volume fraction reduction. The size distribution of intermetallic SPPs was characterized and larger particles were dissolved at longer oxidation time. A correlation between the hydrogen concentration and the volume fraction of intermetallic SPPs at 700 °C steam environment was found, with the volume fraction of SPPs decreasing as hydrogen concentration increases.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1851-1861 |
| Number of pages | 11 |
| Journal | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Volume | 50 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 15 2019 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
Cite this
Dissolution of Intermetallic Second-Phase Particles in Zircaloy-2 in High-Temperature Steam. / Zhong, Weicheng; Liu, Xiang; Mouche, Peter A.; Lin, Jun Li; Park, Donghee; Elbakhshwan, Mohamed S.; Gill, Simerjeet K.; Ren, Yang; Stubbins, James F; Heuser, Brent J.
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 50, No. 4, 15.04.2019, p. 1851-1861.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Dissolution of Intermetallic Second-Phase Particles in Zircaloy-2 in High-Temperature Steam
AU - Zhong, Weicheng
AU - Liu, Xiang
AU - Mouche, Peter A.
AU - Lin, Jun Li
AU - Park, Donghee
AU - Elbakhshwan, Mohamed S.
AU - Gill, Simerjeet K.
AU - Ren, Yang
AU - Stubbins, James F
AU - Heuser, Brent J
PY - 2019/4/15
Y1 - 2019/4/15
N2 - The stability of intermetallic second-phase particles (SPPs) in coated Zircaloy-2 was studied in 700 °C steam environments up to 20 hours. Hydrogen generated from high-temperature steam oxidation of uncoated Zr-induced δ-hydrides formation in the Zircaloy matrix. Synchrotron XRD demonstrated that longer exposure times increased hydride peak intensity and decreased intermetallic SPPs’ peak intensity. Cross-sectional SEM analysis verified the intermetallic SPPs’ volume fraction reduction. The size distribution of intermetallic SPPs was characterized and larger particles were dissolved at longer oxidation time. A correlation between the hydrogen concentration and the volume fraction of intermetallic SPPs at 700 °C steam environment was found, with the volume fraction of SPPs decreasing as hydrogen concentration increases.
AB - The stability of intermetallic second-phase particles (SPPs) in coated Zircaloy-2 was studied in 700 °C steam environments up to 20 hours. Hydrogen generated from high-temperature steam oxidation of uncoated Zr-induced δ-hydrides formation in the Zircaloy matrix. Synchrotron XRD demonstrated that longer exposure times increased hydride peak intensity and decreased intermetallic SPPs’ peak intensity. Cross-sectional SEM analysis verified the intermetallic SPPs’ volume fraction reduction. The size distribution of intermetallic SPPs was characterized and larger particles were dissolved at longer oxidation time. A correlation between the hydrogen concentration and the volume fraction of intermetallic SPPs at 700 °C steam environment was found, with the volume fraction of SPPs decreasing as hydrogen concentration increases.
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UR - http://www.scopus.com/inward/citedby.url?scp=85059836502&partnerID=8YFLogxK
U2 - 10.1007/s11661-018-5090-5
DO - 10.1007/s11661-018-5090-5
M3 - Article
AN - SCOPUS:85059836502
VL - 50
SP - 1851
EP - 1861
JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
SN - 1073-5623
IS - 4
ER -