Strength and rupture geometry of un-irradiated C26M FeCrAl under LOCA burst testing conditions

Bell, Samuel; Kane, Kenneth; Massey, Caleb; Baldesberger, Lucas A.; Lutz, Dan; Pint, Bruce A.

doi:10.1016/j.jnucmat.2021.153242

Cited by 30 publications

(6 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To evaluate the impact of Cr coatings on metrics representative of those needed to demonstrate accident tolerance, burst testing under simulated LOCA conditions was performed utilizing the severe accident test station (SATS) at ORNL. Detailed descriptions of the test procedure are given elsewhere [24,25].…”

Section: Burst Test Resultsmentioning

confidence: 99%

“…In earlier studies comparing burst behavior of C26M FeCrAl to Zry-2 [25], burst temperatures and stresses were reported without denoted error, as C26M consistently burst at temperatures ~150°-200°C higher than Zry-2 at similar hoop stresses. However, any improvements to Zry-4 material strength imparted by a 5-10 µm Cr coating are assumed a priori to be small relative to that of the differences between C26M and Zry-2.…”

Section: Burst Test Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Coating Defects on Performance of Coated Zirconium Cladding

Seibert¹,

Kane²,

Garrison³

et al. 2021

View full text Add to dashboard Cite

The Advanced Fuels Campaign has made progress in developing an ability to fabricate high quality 'generic' chromium coatings applied to commercial nuclear cladding alloys free of the proprietary considerations inherent to the industry materials. The availability of such source material is critical for execution of fundamental studies as well as open collaboration between the national laboratories, within Office of Nuclear Energy programs, and the Nuclear Regulatory Commission. This milestone report provides insights on the impact of processing parameters on the microstructure of 7 micron Cr-coated Zircaloy-4. Coatings were applied using High Power Impulse Magnetron Sputtering (HiPIMS). Scanning electron microscopy was utilized to investigate the overcoating of cladding and cross-sections of the interface. Characterization confirmed that a high quality, continuous coating was achieved. Burst testing was then performed to evaluate the performance of high-quality coatings to coatings that contain known flaws and uncoated materials. Results demonstrated that coatings containing flaws allowing for direct exposure of the base cladding to atmosphere exhibit burst behavior matching that of the uncoated material. However, continuous coatings resulted in measurable improvement. This work will be expanded in FY22 to include a broader set of mechanical property studies and test irradiations.

show abstract

Section: Burst Test Resultsmentioning

confidence: 99%

Section: Burst Test Resultsmentioning

confidence: 99%

Impact of Coating Defects on Performance of Coated Zirconium Cladding

Seibert¹,

Kane²,

Garrison³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Details regarding simulated LOCA burst testing are reported elsewhere [15,16,45,46], but is briefly described here. Approximately 30 cm cladding segments of bare and Cr-coated Zirlo were subjected to simulated LOCA transients in a steam environment using the Severe Accident Test Station (SATS) at Oak Ridge National Laboratory (ORNL).…”

Section: Methodsmentioning

confidence: 99%

“…After burst, a Keyence VR-3100 microscope was used to image the full length of the claddings [16]. Burst opening area and length (from end to end of the rupture) were measured via image analysis.…”

Section: Methodsmentioning

confidence: 99%

“…There are two possible alternatives to bare Zr claddings: (1) replacing Zr based alloys with stronger, more oxidation resistant materials like FeCrAl [2,3,[13][14][15][16] or SiC-based ceramic matrix composites [17][18][19][20][21], or (2) application of a cladding coating to mitigate ZrO2 formation during accident scenarios. The former is a longer-term solution, while the application of coatings is expected to be a shorter-term implementation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation