Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal

Wen Ta Tsai; Chi Lu Yu; Jeih Ing Lee

Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal

Wen Ta Tsai, Chi Lu Yu, Jeih Ing Lee

Research output: Contribution to conference › Paper › peer-review

Abstract

The susceptibility to intergranular corrosion of Alloy 182 weld metal was evaluated by conducting double-loop electrochemical potentiokinetic reaction (DL-EPR) tests in H ₂SO ₄ + CH ₃CSNH ₂ solutions. Three different heat treatments, namely 400°/200h (low temperature annealing, LTA), 621°C /24h (stress relief, SR), and 621°C /24h + 400°C /200h (SR + LTA), were applied to the weld metal. The effect of heat treatment on the degree of sensitization (DOS) of Alloy 182 weld metal was explored. The experimental results showed that the composition of the electrolyte used in DL-EPR test greatly affected the ability to differentiate the DOS of Alloy 182 weld metal. Transmission electron microscopy (TEM) coupled with energy dispersive spectroscopy (EDS) was also employed to identify the types of precipitates and to analyze the chemical composition change along the grain boundaries of Alloy 182 weld.

Original language	English
Publication status	Published - 2004 Dec 1
Event	European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 - Nice, France Duration: 2004 Sept 12 → 2004 Sept 16

Other

Other	European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004
Country/Territory	France
City	Nice
Period	04-09-12 → 04-09-16

All Science Journal Classification (ASJC) codes

Surfaces, Coatings and Films

Cite this

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title = "Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal",

abstract = "The susceptibility to intergranular corrosion of Alloy 182 weld metal was evaluated by conducting double-loop electrochemical potentiokinetic reaction (DL-EPR) tests in H 2SO 4 + CH 3CSNH 2 solutions. Three different heat treatments, namely 400°/200h (low temperature annealing, LTA), 621°C /24h (stress relief, SR), and 621°C /24h + 400°C /200h (SR + LTA), were applied to the weld metal. The effect of heat treatment on the degree of sensitization (DOS) of Alloy 182 weld metal was explored. The experimental results showed that the composition of the electrolyte used in DL-EPR test greatly affected the ability to differentiate the DOS of Alloy 182 weld metal. Transmission electron microscopy (TEM) coupled with energy dispersive spectroscopy (EDS) was also employed to identify the types of precipitates and to analyze the chemical composition change along the grain boundaries of Alloy 182 weld.",

author = "Tsai, {Wen Ta} and Yu, {Chi Lu} and Lee, {Jeih Ing}",

year = "2004",

month = dec,

day = "1",

language = "English",

note = "European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 ; Conference date: 12-09-2004 Through 16-09-2004",

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TY - CONF

T1 - Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal

AU - Tsai, Wen Ta

AU - Yu, Chi Lu

AU - Lee, Jeih Ing

PY - 2004/12/1

Y1 - 2004/12/1

N2 - The susceptibility to intergranular corrosion of Alloy 182 weld metal was evaluated by conducting double-loop electrochemical potentiokinetic reaction (DL-EPR) tests in H 2SO 4 + CH 3CSNH 2 solutions. Three different heat treatments, namely 400°/200h (low temperature annealing, LTA), 621°C /24h (stress relief, SR), and 621°C /24h + 400°C /200h (SR + LTA), were applied to the weld metal. The effect of heat treatment on the degree of sensitization (DOS) of Alloy 182 weld metal was explored. The experimental results showed that the composition of the electrolyte used in DL-EPR test greatly affected the ability to differentiate the DOS of Alloy 182 weld metal. Transmission electron microscopy (TEM) coupled with energy dispersive spectroscopy (EDS) was also employed to identify the types of precipitates and to analyze the chemical composition change along the grain boundaries of Alloy 182 weld.

AB - The susceptibility to intergranular corrosion of Alloy 182 weld metal was evaluated by conducting double-loop electrochemical potentiokinetic reaction (DL-EPR) tests in H 2SO 4 + CH 3CSNH 2 solutions. Three different heat treatments, namely 400°/200h (low temperature annealing, LTA), 621°C /24h (stress relief, SR), and 621°C /24h + 400°C /200h (SR + LTA), were applied to the weld metal. The effect of heat treatment on the degree of sensitization (DOS) of Alloy 182 weld metal was explored. The experimental results showed that the composition of the electrolyte used in DL-EPR test greatly affected the ability to differentiate the DOS of Alloy 182 weld metal. Transmission electron microscopy (TEM) coupled with energy dispersive spectroscopy (EDS) was also employed to identify the types of precipitates and to analyze the chemical composition change along the grain boundaries of Alloy 182 weld.

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M3 - Paper

AN - SCOPUS:84867247567

T2 - European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004

Y2 - 12 September 2004 through 16 September 2004

ER -

Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal

Abstract

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