Case Study: Pitting and Stress Corrosion Cracking in Heat-Affected Zone of Welded Underground 304 Stainless Steel Pipe

被引:7
作者
Tawancy, H. M. [1 ,2 ]
Al-Hadhrami, Luai M. [1 ,2 ]
机构
[1] King Fahd Univ Petr & Minerals, Engn Res Ctr, Dhahran 31261, Saudi Arabia
[2] King Fahd Univ Petr & Minerals, Ctr Res Excellence Corros, Res Inst, Dhahran 31261, Saudi Arabia
关键词
electron microscopy; failure analysis; stainless steels; STAINLESS-STEEL;
D O I
10.1007/s11665-011-0076-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A jacketed underground pipeline made of 304 stainless steel tubing to transport utility water in a petrochemical plant at ambient temperature was perforated after few months of operation. Perforation started preferentially at the outer bottom surface of the pipe in the weld heat-affected zones where the insulating coating was damaged. Detailed microstructural characterization was carried out to determine the cause of failure using optical metallography, x-ray diffraction, scanning electron microscopy combined with energy dispersive spectroscopy, and transmission electron microscopy. Experimental results indicated that the failure occurred by interaction between the outer bottom surface of the pipe and surrounding environment leading to pitting and stress corrosion cracking in the presence of chloride ions. This could have been aided by residual welding stresses and the characteristic low stacking fault energy of the material.
引用
收藏
页码:1757 / 1762
页数:6
相关论文
共 10 条
  • [1] [Anonymous], CORROSION CORROSION
  • [2] ASM Metals Handbook, 1973, ASM MET HDB, V7, P134
  • [3] Corrosion and cracking under insulation of type 304 stainless steel at ambient temperature
    Elshawesh, F
    El Houd, A
    El Raghai, O
    [J]. CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 2003, 38 (03) : 239 - 240
  • [4] Pitting corrosion on 316L pipes in terephthalic acid (TA) dryer
    Gong, Y.
    Cao, J.
    Meng, X. -H.
    Yang, Z. -G.
    [J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2009, 60 (11): : 899 - 908
  • [5] Corrosion inhibition of stainless steel by polyaniline, poly(2-chloroaniline), and poly (aniline-co-2-chloroaniline) in HCl
    Huer, Evrim
    Bereket, Goezen
    Sahin, Yuecel
    [J]. PROGRESS IN ORGANIC COATINGS, 2006, 57 (02) : 149 - 158
  • [6] Kishimoto K., 2004, ADV FRACT FAIL PREV, V261, P885
  • [7] Recent developments in stainless steels
    Lo, K. H.
    Shek, C. H.
    Lai, J. K. L.
    [J]. MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2009, 65 (4-6) : 39 - 104
  • [8] Logan H.L., 1966, STRESS CORROSION CRA, P129
  • [9] Riahi M, 2004, MATER EVAL, V62, P373
  • [10] Schiroky G, 2009, WORLD OIL, V230, P73