Austenitic stainless steel degradation in dynamic Pb17Li systems

H. Tas; P. Lemaitre; Ja Dekeyser; W. Vandermeulen; F. De Schutter

doi:10.1016/0920-3796(91)90015-I

Austenitic stainless steel degradation in dynamic Pb17Li systems

H. Tas, P. Lemaitre, Ja Dekeyser, W. Vandermeulen, F. De Schutter

Research output › peer-review

Abstract

Coupon and loop tubing material of AISI 316L type austenitic stainless steel has been exposed to the candidate liquid breeder material Pb-17Li at 500°C in the 100 liters forced convection loop MALICE. Detailed metallographic and microanalytical examination of the surface modifications were made. It has been found that the ferrite layer porosity, which is considered to be responsible for the generally observed linear or quasi-linear ferrite growth and the corresponding high corrosion rates, is a direct consequence of the formation of a continuous network of σ-phase in the ferrite ans the subsequent rapid dissolution of this σ-phase in the liquid metal.

Original language	English
Pages (from-to)	321-328
Number of pages	8
Journal	fusion engineering and design
Volume	14
Issue number	3-4
DOIs	https://doi.org/10.1016/0920-3796(91)90015-I
State	Published - 2 Apr 1991

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
General Materials Science
Mechanical Engineering

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10.1016/0920-3796(91)90015-I

Cite this

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title = "Austenitic stainless steel degradation in dynamic Pb17Li systems",

abstract = "Coupon and loop tubing material of AISI 316L type austenitic stainless steel has been exposed to the candidate liquid breeder material Pb-17Li at 500°C in the 100 liters forced convection loop MALICE. Detailed metallographic and microanalytical examination of the surface modifications were made. It has been found that the ferrite layer porosity, which is considered to be responsible for the generally observed linear or quasi-linear ferrite growth and the corresponding high corrosion rates, is a direct consequence of the formation of a continuous network of σ-phase in the ferrite ans the subsequent rapid dissolution of this σ-phase in the liquid metal.",

author = "H. Tas and P. Lemaitre and Ja Dekeyser and W. Vandermeulen and {De Schutter}, F.",

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AU - Tas, H.

AU - Lemaitre, P.

AU - Dekeyser, Ja

AU - Vandermeulen, W.

AU - De Schutter, F.

PY - 1991/4/2

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N2 - Coupon and loop tubing material of AISI 316L type austenitic stainless steel has been exposed to the candidate liquid breeder material Pb-17Li at 500°C in the 100 liters forced convection loop MALICE. Detailed metallographic and microanalytical examination of the surface modifications were made. It has been found that the ferrite layer porosity, which is considered to be responsible for the generally observed linear or quasi-linear ferrite growth and the corresponding high corrosion rates, is a direct consequence of the formation of a continuous network of σ-phase in the ferrite ans the subsequent rapid dissolution of this σ-phase in the liquid metal.

AB - Coupon and loop tubing material of AISI 316L type austenitic stainless steel has been exposed to the candidate liquid breeder material Pb-17Li at 500°C in the 100 liters forced convection loop MALICE. Detailed metallographic and microanalytical examination of the surface modifications were made. It has been found that the ferrite layer porosity, which is considered to be responsible for the generally observed linear or quasi-linear ferrite growth and the corresponding high corrosion rates, is a direct consequence of the formation of a continuous network of σ-phase in the ferrite ans the subsequent rapid dissolution of this σ-phase in the liquid metal.

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