Mass Transfer of Stainless Steel in Pumped Sodium Loops and its Effect on Microstructure

Thorley, A.W.; Blundell, Anthony; Bardsley, J.

doi:10.1007/978-1-4684-8366-6_2

Material Behavior and Physical Chemistry in Liquid Metal Systems 1982

DOI: 10.1007/978-1-4684-8366-6_2

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Mass Transfer of Stainless Steel in Pumped Sodium Loops and its Effect on Microstructure

A.W. Thorley¹,

Anthony Blundell²,

J. Bardsley³

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1987

2022

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Cited by 5 publications

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Evaluation of Microstructural, Mechanical Properties and Corrosion Behavior of AISI Type 316LN Stainless Steel and Modified 9Cr-1Mo Steel Exposed in a Dynamic Bimetallic Sodium Loop at 798 K (525 °C) for 16,000 Hours

Bharasi

Thyagarajan

Shaikh

et al. 2011

Metall Mater Trans A

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Changes occurring in the chemical composition, microstructure, mechanical properties, and carburization behavior of type 316LN stainless steel and modified 9Cr-1Mo steel on exposure to flowing sodium at 798 K (525°C) for 16,000 hours in a bimetallic loop are discussed in this article. Type 316LN stainless steel revealed a degraded layer of approximately 5 lm depth. No significant microstructural changes were observed in the case of modified 9Cr-1Mo steel exposed to sodium. The carburization depth in type 316LN stainless steel was approximately 100 lm and the surface carbon concentration was 0.374 wt pct. In the case of modified 9Cr-1Mo steel, the carbon concentration at the surface was approximately 3.50 wt pct and the depth of carburization was nearly 75 lm. The concentration of nickel and chromium decreased from the bulk to the surface of type 316LN stainless steel, leading to the formation of a ferrite layer. The concentration of these two elements reached the original matrix concentration at around 30 lm. Sodium-exposed material indicated an increase in yield strength by 10 pct and reduction in ductility by 34 pct vis-a`-vis annealed material. No such changes in strength and ductility were observed in the case of modified 9Cr-1Mo steel. A decrease in impact energy was noticed for sodium-exposed type 316LN stainless steel and modified 9Cr-1Mo steel vis-a`-vis as-received material.

show abstract

Evaluation of Microstructural, Mechanical Properties and Corrosion Behavior of AISI Type 316LN Stainless Steel and Modified 9Cr-1Mo Steel Exposed in a Dynamic Bimetallic Sodium Loop at 798 K (525 °C) for 16,000 Hours

Bharasi

Thyagarajan

Shaikh

et al. 2011

Metall Mater Trans A

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show abstract

Carbon Transfer in Sodium System Under Thermal Cycling-Possibility of “Metal Dusting”

Pillai

2010

J. of Materi Eng and Perform

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On the failure of fast reactor fuel pins

Matthews

Preusser

1987

Nuclear Engineering and Design

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Mass Transfer of Stainless Steel in Pumped Sodium Loops and its Effect on Microstructure

Cited by 5 publications

References 2 publications

Evaluation of Microstructural, Mechanical Properties and Corrosion Behavior of AISI Type 316LN Stainless Steel and Modified 9Cr-1Mo Steel Exposed in a Dynamic Bimetallic Sodium Loop at 798 K (525 °C) for 16,000 Hours

Evaluation of Microstructural, Mechanical Properties and Corrosion Behavior of AISI Type 316LN Stainless Steel and Modified 9Cr-1Mo Steel Exposed in a Dynamic Bimetallic Sodium Loop at 798 K (525 °C) for 16,000 Hours

Carbon Transfer in Sodium System Under Thermal Cycling-Possibility of “Metal Dusting”

On the failure of fast reactor fuel pins

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