The effect of sigma phase formation on the corrosion and mechanical properties of Nb-stabilized stainless steel cladding

Kari Klemetti; Hannu Hänninen; Jorma Kivilahti

The effect of sigma phase formation on the corrosion and mechanical properties of Nb-stabilized stainless steel cladding

Kari Klemetti, Hannu Hänninen, Jorma Kivilahti

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

The formation of sigma phase in Nb-stabilized austenitic stainless cladding containing 9 - 10 % delta ferrite has been studied. The delta ferrite was found to decompose during stress relief heat treatments (10 - 600 h at 670 deg C) forming sigma phase and secondary austenite. The effect of sigma phase on mechanical properties was evaluated by using tensile, impact and COD-tests. Corrosion properties were studied with the aid of anodic polarization measurements and EPR-tests. Slow strain-rate tests in 1N HCl and 0.58N H₃BO₃ solutions were used to study stress corrosion cracking. Hydrogen embrittlement tests were performed by charging thin tensile specimens with hydrogen through cathodic polarization.

Original language	English
Pages (from-to)	17 - 25
Number of pages	9
Journal	Welding Journal
Volume	63
Issue number	1
Publication status	Published - 1984
MoE publication type	Not Eligible

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title = "The effect of sigma phase formation on the corrosion and mechanical properties of Nb-stabilized stainless steel cladding",

abstract = "The formation of sigma phase in Nb-stabilized austenitic stainless cladding containing 9 - 10 % delta ferrite has been studied. The delta ferrite was found to decompose during stress relief heat treatments (10 - 600 h at 670 deg C) forming sigma phase and secondary austenite. The effect of sigma phase on mechanical properties was evaluated by using tensile, impact and COD-tests. Corrosion properties were studied with the aid of anodic polarization measurements and EPR-tests. Slow strain-rate tests in 1N HCl and 0.58N H3BO3 solutions were used to study stress corrosion cracking. Hydrogen embrittlement tests were performed by charging thin tensile specimens with hydrogen through cathodic polarization. ",

author = "Kari Klemetti and Hannu H{\"a}nninen and Jorma Kivilahti",

year = "1984",

language = "English",

volume = "63",

pages = "17 -- 25",

journal = "Welding Journal",

issn = "0043-2296",

publisher = "American Welding Society (AWS)",

number = "1",

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TY - JOUR

T1 - The effect of sigma phase formation on the corrosion and mechanical properties of Nb-stabilized stainless steel cladding

AU - Klemetti, Kari

AU - Hänninen, Hannu

AU - Kivilahti, Jorma

PY - 1984

Y1 - 1984

N2 - The formation of sigma phase in Nb-stabilized austenitic stainless cladding containing 9 - 10 % delta ferrite has been studied. The delta ferrite was found to decompose during stress relief heat treatments (10 - 600 h at 670 deg C) forming sigma phase and secondary austenite. The effect of sigma phase on mechanical properties was evaluated by using tensile, impact and COD-tests. Corrosion properties were studied with the aid of anodic polarization measurements and EPR-tests. Slow strain-rate tests in 1N HCl and 0.58N H3BO3 solutions were used to study stress corrosion cracking. Hydrogen embrittlement tests were performed by charging thin tensile specimens with hydrogen through cathodic polarization.

AB - The formation of sigma phase in Nb-stabilized austenitic stainless cladding containing 9 - 10 % delta ferrite has been studied. The delta ferrite was found to decompose during stress relief heat treatments (10 - 600 h at 670 deg C) forming sigma phase and secondary austenite. The effect of sigma phase on mechanical properties was evaluated by using tensile, impact and COD-tests. Corrosion properties were studied with the aid of anodic polarization measurements and EPR-tests. Slow strain-rate tests in 1N HCl and 0.58N H3BO3 solutions were used to study stress corrosion cracking. Hydrogen embrittlement tests were performed by charging thin tensile specimens with hydrogen through cathodic polarization.

M3 - Article

VL - 63

SP - 17

EP - 25

JO - Welding Journal

JF - Welding Journal

SN - 0043-2296

IS - 1

ER -