Analysis of the causes of the cracking of tube bundles of 316L stainless steel Shell-and-Tube heat exchanger

Wang, Xiuyun; Li, Qiao; Zhang, Lei

doi:10.1016/j.engfailanal.2022.106484

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…Stainless steel heat exchanger tube cracking occurs from time to time, causing heat exchanger tube cracking most commonly occurs in tensile stress and stress corrosion cracking in sensitive corrosive media, of which the probability of occurrence of chloride stress corrosion cracking is the highest, followed by the possibility of cracking in the hydrogen sulfide environment or hydrogen embrittlement and other mechanisms [3][4][5][6][7][8][9]. In addition the stainless steel heat exchanger tube may also be sensitized, and the sensitized state of the heat exchanger tube in a corrosive environment intergranular corrosion cracking [10,11].…”

Section: Introductionmentioning

confidence: 99%

Butyl rubber final cooler heat exchanger tube cracking failure analysis

Du,

Song,

Liu

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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Butyl rubber products are widely used, have good development prospects, and the demand is increasing year by year. However, the catalysts used in its production process decompose highly corrosive media, causing corrosion and cracking of its equipment. The final cooler, an important piece of equipment for this production unit, suffered a heat exchanger tube burst, causing the unit to stop. The failed heat exchanger tube was subjected to a series of experimental studies including hardness testing, metallographic analysis, fracture and spectral analysis, and analysis of the corrosive media and scouring conditions in its working environment. The results show that there are more inclusions and a certain degree of sensitization in the heat exchanger tube organization, resulting in the weakening of its grain boundaries, corrosion resistance is reduced. Combined with the corrosive environment and the combined effect of media scouring, the grain detachment, microcracking, with the increase in service time, the local strength of the heat exchanger tube can not meet the requirements, resulting in bursting.

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Section: Introductionmentioning

confidence: 99%

Butyl rubber final cooler heat exchanger tube cracking failure analysis

Du,

Song,

Liu

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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“…[ 1–4 ] In engineering practice, stainless steels are vulnerable to pitting corrosion, and the pits often initiate and propagate at the early stage of SCC, ultimately causing the catastrophic failure of the alloys. [ 5–7 ]…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4] In engineering practice, stainless steels are vulnerable to pitting corrosion, and the pits often initiate and propagate at the early stage of SCC, ultimately causing the catastrophic failure of the alloys. [5][6][7] Metastable pitting as a precursor stage to stable pitting has been investigated for decades. [8,9] Analysis of transient signals and metastable pitting morphologies has been proven to be a valid approach to study the initiation, growth, and its transition to stable pitting.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Metastable Pitting Behavior of Austenitic and Duplex Stainless Steels under U‐Bending Deformation

Hou

et al. 2023

steel research int.

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The metastable pitting behavior of austenitic stainless steel (304 SS) and duplex stainless steel (2205 DSS) under U-bending deformation is comparatively investigated. This study highlights the effects of differences in inclusions and matrix between 304 SS and 2205 DSS with regard to the metastable pitting behavior under tensile and compressive deformation. The results show that the pit initiation frequency of 304 SS increases in the order: tensile < asreceived < compressive; in contrast, the initiation frequency of 2205 DSS increases in the order: as-received < tensile < compressive. In addition, tensile and compressive deformation change the preferential initiation sites of metastable pitting in 2205 DSS. It is proposed that the types of transient signals can be comprehensively and objectively distinguished by the two parameters (t g /t rep ) and [(I p /Q g ):(I p /Q rep )]. The correlation relationship between transient signals and pitting morphologies is clarified by cluster analysis. Both tensile and compressive deformations promote the growth of a few metastable pits, thus increasing the transition probability from metastability to stability. Overall, both tensile and compressive deformations are detrimental to the pitting corrosion resistance of the experimental steels.

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