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Autori principali:	Deming Wang, Zhe Li, Hui Xu, Heng Li, Jianyuan Zhang, Xiaowei Wang, Jianqun Tang, Jianming Gong
Natura:	Artículo Open Access
Pubblicazione:	Wiley 2025
Soggetti:	Materials and Corrosion
Accesso online:	https://onlinelibrary.wiley.com/doi/10.1002/maco.70039
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Corrosion Cracking of 316L Steel Under Fatigue Loading in High‐Temperature Binary Nitrate Salt: Effects of Loading Frequency Deming Wang Zhe Li Hui Xu Heng Li Jianyuan Zhang Xiaowei Wang Jianqun Tang Jianming Gong Materials and Corrosion ABSTRACT In this study, the corrosion‐fatigue behavior of 316L steel under various loading frequencies in molten nitrate salt at 565°C were conducted. The results indicate that the fatigue life of 316L steel was similar in air and molten salt environments at a low frequency (0.019 Hz). However, at the relatively higher loading frequencies (0.038, 0.076, and 0.152 Hz), a reduction in fatigue life was observed compared with that in air. Fatigue loading significantly accelerated the corrosion of 316L steel, and the extent of acceleration was dependent on the loading conditions. At 0.019 Hz, the cracking of the oxide layer in molten nitrate salts was limited due to the relatively low strain rate, whereas at 0.038, 0.076, and 0.152 Hz, it became considerably more severe. At higher loading frequencies (≥ 0.038 Hz), significant cracking of the oxide layer not only creates pathways for molten salt to corrode crack tips further, but also promotes multi‐site fatigue crack initiation. 10.1002/maco.70039 http://onlinelibrary.wiley.com/termsAndConditions#vor

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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