The influence of hydrogen on the low cycle fatigue behavior of strain-hardened 316L stainless steel

Oliveira, D. M.; Marchi, Christopher W. San; Medlin, Douglas L.; Gibeling, J.C.

doi:10.1016/j.msea.2022.143477

Cited by 7 publications

(1 citation statement)

References 54 publications

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“…Owing to good hydrogen embrittlement resistance and corrosion resistance, austenitic stainless steel is one of the widely used structural materials in high‐pressure equipment, such as high‐pressure hydrogen storage tank and high‐pressure autoclave. [ 1 ] Hydrogen‐induced cracking or stress corrosion cracking often appears in the inner surface of high‐pressure equipment in service. [ 2 ] Unfortunately, the inner crack sites are invisible from the outside, thus it is imperative to develop a non‐destructive testing (NDT) method for large‐scale, and on‐site detection of inner crack in the operating high‐pressure equipment.…”

Section: Introductionmentioning

confidence: 99%

Visualization and Depth Estimation of Inner Crack in High‐Pressure Equipment Based on Organic Mechanochromic Luminescent Materials

Zhang

Xiao-wen

Zhang

et al. 2023

Adv Materials Inter

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Invisible hydrogen‐induced cracking or stress corrosion cracking easily appears in high‐pressure equipment in service. Mechanoresponsive luminogens (MRLs) can convert mechanical force into visible luminescence emission. Thus, MRL‐based detection methods to damage of structures have been paid extensive attention in recent years. However, the structural damage‐induced luminescence response and mechanism are still not fully comprehended. In this study, organic mechanochromic luminescent materials (1,1,2,2‐tetrakis (4‐nitrophenyl) ethene (TPE‐4N)) are proposed to detect the invisible inner crack in high‐pressure equipment. Because the high‐pressure equipment in service is subjected to tensile loading, the inner crack‐induced fluorescence response and mechanism under tension are investigated. The inner crack‐induced local strain concentration can be transformed into a visible green fluorescence, which can be easily observed from the outside. According to the appearance of fluorescence, the position of the inner crack can be detected. Moreover, the depth level of the inner crack can be quantitatively estimated using applied tensile loading and the ratio of fluorescent area. The investigations may provide a new idea of non‐destructive evaluation material and method for invisible damage in high‐pressure equipment.

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Section: Introductionmentioning

confidence: 99%