Effect of surface modification on candidate alloys for canadian SCWR fuel cladding

Jian Li, Pei Liu, Renata Zavadil, Tom Malis, Sami Penttilä

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The Canadian Generation-IV supercritical water reactor (SCWR) requires peak cladding surface temperature of 800? for a core outlet temperature of 625[Celcius]. Materials selection for high temperature fuel cladding is becoming one of the major challenging tasks. Austenitic stainless steels with excellent corrosion resistance are often susceptible to stress corrosion cracking upon SCW exposure. Low-Cr steels such as P91 exhibit good high-temperature mechanical properties, but the lack of sufficient Cr content makes this group of alloys corrode too fast. One possible solution is to use coatings or surface modification techniques to improve the surface resistance to corrosion. In this study, we investigated the effect of surface modification on commercial 316L stainless steel. Surface modification by mechanical deformation has marked improvement in corrosion resistance during SCW exposure. Possible mechanisms for such improvement are discussed.
Original languageEnglish
Pages (from-to)129-134
JournalJournal of Minerals and Materials Characterization and Engineering
Volume2
Issue number2
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Surface treatment
Corrosion resistance
Water
Surface resistance
Temperature
Stress corrosion cracking
Austenitic stainless steel
Stainless steel
Corrosion
Coatings
Mechanical properties
Steel

Keywords

  • SCW
  • surface modification
  • FIB

Cite this

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title = "Effect of surface modification on candidate alloys for canadian SCWR fuel cladding",
abstract = "The Canadian Generation-IV supercritical water reactor (SCWR) requires peak cladding surface temperature of 800? for a core outlet temperature of 625[Celcius]. Materials selection for high temperature fuel cladding is becoming one of the major challenging tasks. Austenitic stainless steels with excellent corrosion resistance are often susceptible to stress corrosion cracking upon SCW exposure. Low-Cr steels such as P91 exhibit good high-temperature mechanical properties, but the lack of sufficient Cr content makes this group of alloys corrode too fast. One possible solution is to use coatings or surface modification techniques to improve the surface resistance to corrosion. In this study, we investigated the effect of surface modification on commercial 316L stainless steel. Surface modification by mechanical deformation has marked improvement in corrosion resistance during SCW exposure. Possible mechanisms for such improvement are discussed.",
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Effect of surface modification on candidate alloys for canadian SCWR fuel cladding. / Li, Jian; Liu, Pei; Zavadil, Renata; Malis, Tom; Penttilä, Sami.

In: Journal of Minerals and Materials Characterization and Engineering, Vol. 2, No. 2, 2014, p. 129-134.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of surface modification on candidate alloys for canadian SCWR fuel cladding

AU - Li, Jian

AU - Liu, Pei

AU - Zavadil, Renata

AU - Malis, Tom

AU - Penttilä, Sami

PY - 2014

Y1 - 2014

N2 - The Canadian Generation-IV supercritical water reactor (SCWR) requires peak cladding surface temperature of 800? for a core outlet temperature of 625[Celcius]. Materials selection for high temperature fuel cladding is becoming one of the major challenging tasks. Austenitic stainless steels with excellent corrosion resistance are often susceptible to stress corrosion cracking upon SCW exposure. Low-Cr steels such as P91 exhibit good high-temperature mechanical properties, but the lack of sufficient Cr content makes this group of alloys corrode too fast. One possible solution is to use coatings or surface modification techniques to improve the surface resistance to corrosion. In this study, we investigated the effect of surface modification on commercial 316L stainless steel. Surface modification by mechanical deformation has marked improvement in corrosion resistance during SCW exposure. Possible mechanisms for such improvement are discussed.

AB - The Canadian Generation-IV supercritical water reactor (SCWR) requires peak cladding surface temperature of 800? for a core outlet temperature of 625[Celcius]. Materials selection for high temperature fuel cladding is becoming one of the major challenging tasks. Austenitic stainless steels with excellent corrosion resistance are often susceptible to stress corrosion cracking upon SCW exposure. Low-Cr steels such as P91 exhibit good high-temperature mechanical properties, but the lack of sufficient Cr content makes this group of alloys corrode too fast. One possible solution is to use coatings or surface modification techniques to improve the surface resistance to corrosion. In this study, we investigated the effect of surface modification on commercial 316L stainless steel. Surface modification by mechanical deformation has marked improvement in corrosion resistance during SCW exposure. Possible mechanisms for such improvement are discussed.

KW - SCW

KW - surface modification

KW - FIB

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JO - Journal of Minerals and Materials Characterization and Engineering

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