Electrochemical potentiokinetic reactivation behavior of alloy 182 weld metal

Wen Ta Tsai, Chi Lu Yu, Jeih Ing Lee

研究成果: Paper同行評審

摘要

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.

原文English
出版狀態Published - 2004 十二月 1
事件European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 - Nice, France
持續時間: 2004 九月 122004 九月 16

Other

OtherEuropean Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004
國家/地區France
城市Nice
期間04-09-1204-09-16

All Science Journal Classification (ASJC) codes

  • 表面、塗料和薄膜

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