Effects of Corrosion Potential, Dissolved Oxygen, and Chloride on the Stress Corrosion Cracking Susceptibility of a 316NG Stainless Steel Weld Joint

Wang, Jiamei; Su, Haozhan; Ajmand, Farzin; Zhang, Lefu; Chen, Kai

doi:10.5006/2952

Cited by 7 publications

(1 citation statement)

References 28 publications

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“…Thereafter, despite the fact that a large number of laboratory studies have been performed and several possible models proposed to explain the IGSCC phenomenon [2][3][4][5][6], the exact failure mechanisms driving IGSCC propagation remain unclear. To date, plenty of parameters have been reported to have influence on SCC, including temperature, alloy composition, cold-work, electrochemical potential, and stress [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. The problem is further convoluted as the parameters listed above are not independent.…”

Section: Introductionmentioning

confidence: 99%

A study on the surface and crack tip oxidation of alloy 600 through high-resolution characterization

Chen

Shen

2020

Corrosion Science

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Surface, stagnant grain boundary (GB), and crack tip oxidation of Alloy 600 were studied. The mirror-finished surface oxide has a duplex structure and the formation mechanisms of each layer are discussed. A more compact oxide film is observed on the cold-worked surface, while the nano-GBs are preferentially oxidized. The crack tip oxidation rate is around four orders of magnitude faster than that of the stagnant GB, and their oxidation mechanisms are believed to be the same. Diffusion-induced grain boundary migration (DIGM) is observed around the crack and oxidized GB tips. The role of Ni expulsion on the DIGM is discussed.

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