Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal

Wen Ta Tsai, Chi Lu Yu, Jeih Ing Lee

Research output: Contribution to conferencePaper

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 languageEnglish
Publication statusPublished - 2004 Dec 1
EventEuropean Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 - Nice, France
Duration: 2004 Sep 122004 Sep 16

Other

OtherEuropean Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004
CountryFrance
CityNice
Period04-09-1204-09-16

Fingerprint

Welds
Metals
Stress relief
Heat treatment
Annealing
Chemical analysis
Electrolytes
Precipitates
Energy dispersive spectroscopy
Grain boundaries
Corrosion
Transmission electron microscopy
Temperature

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Cite this

Tsai, W. T., Yu, C. L., & Lee, J. I. (2004). Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal. Paper presented at European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004, Nice, France.
Tsai, Wen Ta ; Yu, Chi Lu ; Lee, Jeih Ing. / Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal. Paper presented at European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004, Nice, France.
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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.",
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Tsai, WT, Yu, CL & Lee, JI 2004, 'Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal', Paper presented at European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004, Nice, France, 04-09-12 - 04-09-16.

Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal. / Tsai, Wen Ta; Yu, Chi Lu; Lee, Jeih Ing.

2004. Paper presented at European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004, Nice, France.

Research output: Contribution to conferencePaper

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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Tsai WT, Yu CL, Lee JI. Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal. 2004. Paper presented at European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004, Nice, France.