Influence of alloy microstructure on oxide growth in HCM12A in supercritical water

Jeremy Bischoff; Arthur T. Motta; Lizhen Tan; Todd R. Allen

Influence of alloy microstructure on oxide growth in HCM12A in supercritical water

Jeremy Bischoff, Arthur T. Motta, Lizhen Tan, Todd R. Allen

Research output: Contribution to journal › Conference article › peer-review

Abstract

HCM12A is a ferritic-martensitic steel alloy envisioned for cladding and structural material in the Generation IV Supercritical Water Reactor (SCWR). This alloy was oxidized in 600°C supercritical water for 2, 4 and 6 weeks, and the oxide layers formed were analyzed using microbeam synchrotron radiation and electron microscopy. The oxide layers show a three-layer structure with an Fe₃O₄ outer layer, an inner layer containing a mixture of Fe₃O₄ and FeCr₂O₄ and a diffusion layer containing FeCr₂O₄ and Cr₂O₃ precipitates along ferrite lath boundaries. The base metal microstructure has a strong influence on the advancement of the oxide layers, due to the segregation at the lath boundaries of chromium rich particles, which are oxidized preferentially.

Original language	English (US)
Pages (from-to)	19-24
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	1125
State	Published - 2009
Event	2008 MRS Fall Meeting - Boston, MA, United States Duration: Dec 1 2008 → Dec 5 2008

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Influence of alloy microstructure on oxide growth in HCM12A in supercritical water",

abstract = "HCM12A is a ferritic-martensitic steel alloy envisioned for cladding and structural material in the Generation IV Supercritical Water Reactor (SCWR). This alloy was oxidized in 600°C supercritical water for 2, 4 and 6 weeks, and the oxide layers formed were analyzed using microbeam synchrotron radiation and electron microscopy. The oxide layers show a three-layer structure with an Fe3O4 outer layer, an inner layer containing a mixture of Fe3O4 and FeCr2O4 and a diffusion layer containing FeCr2O4 and Cr2O3 precipitates along ferrite lath boundaries. The base metal microstructure has a strong influence on the advancement of the oxide layers, due to the segregation at the lath boundaries of chromium rich particles, which are oxidized preferentially.",

author = "Jeremy Bischoff and Motta, {Arthur T.} and Lizhen Tan and Allen, {Todd R.}",

year = "2009",

language = "English (US)",

volume = "1125",

pages = "19--24",

journal = "Materials Research Society Symposium Proceedings",

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note = "2008 MRS Fall Meeting ; Conference date: 01-12-2008 Through 05-12-2008",

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T1 - Influence of alloy microstructure on oxide growth in HCM12A in supercritical water

AU - Bischoff, Jeremy

AU - Motta, Arthur T.

AU - Tan, Lizhen

AU - Allen, Todd R.

PY - 2009

Y1 - 2009

N2 - HCM12A is a ferritic-martensitic steel alloy envisioned for cladding and structural material in the Generation IV Supercritical Water Reactor (SCWR). This alloy was oxidized in 600°C supercritical water for 2, 4 and 6 weeks, and the oxide layers formed were analyzed using microbeam synchrotron radiation and electron microscopy. The oxide layers show a three-layer structure with an Fe3O4 outer layer, an inner layer containing a mixture of Fe3O4 and FeCr2O4 and a diffusion layer containing FeCr2O4 and Cr2O3 precipitates along ferrite lath boundaries. The base metal microstructure has a strong influence on the advancement of the oxide layers, due to the segregation at the lath boundaries of chromium rich particles, which are oxidized preferentially.

AB - HCM12A is a ferritic-martensitic steel alloy envisioned for cladding and structural material in the Generation IV Supercritical Water Reactor (SCWR). This alloy was oxidized in 600°C supercritical water for 2, 4 and 6 weeks, and the oxide layers formed were analyzed using microbeam synchrotron radiation and electron microscopy. The oxide layers show a three-layer structure with an Fe3O4 outer layer, an inner layer containing a mixture of Fe3O4 and FeCr2O4 and a diffusion layer containing FeCr2O4 and Cr2O3 precipitates along ferrite lath boundaries. The base metal microstructure has a strong influence on the advancement of the oxide layers, due to the segregation at the lath boundaries of chromium rich particles, which are oxidized preferentially.

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M3 - Conference article

AN - SCOPUS:70449449552

SN - 0272-9172

VL - 1125

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JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

T2 - 2008 MRS Fall Meeting

Y2 - 1 December 2008 through 5 December 2008

ER -

Influence of alloy microstructure on oxide growth in HCM12A in supercritical water

Abstract

All Science Journal Classification (ASJC) codes

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