Stress Corrosion Cracking of SA-543 High-Strength Steel in All-Volatile Treatment Boiler Feed Water

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• 作者：R. Rihan ; M. Basha ; A. Al-Meshari…
• 关键词：All ; volatile treatment ; Corrosion and wear ; Heat ; affected zone ; Heat treatment ; SA ; 543 steel ; Stress corrosion cracking ; Welds
• 刊名：Journal of Materials Engineering and Performance
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：24
• 期：10
• 页码：3773-3782
• 全文大小：3,416 KB
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• 作者单位：R. Rihan (1)
  M. Basha (1)
  A. Al-Meshari (2)
  A. Bayramov (2)
  G. van Zyl (2)
  H. Dafalla (1)
  A. I. Mohamed (1)
  
  1. Center of Engineering Research - Research Institute, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
  2. Materials & Corrosion Section, SABIC Technology Center -Jubail, Saudi Basic Industries Corporation (SABIC), Jubail Industrial City, 31961, Saudi Arabia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Characterization and Evaluation Materials
  Materials Science
  Tribology, Corrosion and Coatings
  Quality Control, Reliability, Safety and Risk
  Engineering Design
  
• 出版者：Springer New York
• ISSN：1544-1024

文摘

Susceptibility of SA-543 steel, its welds (with and without stress relief treatment), and the heat-affected zone (HAZ) to stress corrosion cracking (SCC) was investigated in de-aerated and aerated boiler feed water subjected to the all-volatile treatment (AVT-BFW), and distilled water at 275 °C using the slow strain rate testing (SSRT) technique. The SSRT specimens were tested at three extension rates (3.50 × 10?, 9.00 × 10?, and 7.50 × 10? mm/s) using a novel SCC testing rig capable of testing at high temperatures and pressures. There are no significant differences in the time-to-failure among the four tested specimens. The elongation of the specimens at the time of failure is in the range of 10-23%. The reduction of the cross-sectional area of the failed specimens is large (45-77%) and the absence of any signs of intergranular propagation in fractured specimens, determined by scanning electron microscopy, indicates that the failure is due to mechanical load and not due to SCC. Dissolved oxygen does not affect the susceptibility of the specimens to SCC, which could be due to the inhibition effect of the test solution. SA-543 steel as the base metal, its welds (with and without stress relief treatment), and the HAZ are suitable for use in hot AVT-BFW and distilled water. Keywords All-volatile treatment Corrosion and wear Heat-affected zone Heat treatment SA-543 steel Stress corrosion cracking Welds