{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T20:44:52Z","timestamp":1763412292867,"version":"3.45.0"},"reference-count":41,"publisher":"Public Library of Science (PLoS)","issue":"11","license":[{"start":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T00:00:00Z","timestamp":1763337600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the key scientific research project of colleges and universities of Henan Provincial Department of Education","award":["24A460023"],"award-info":[{"award-number":["24A460023"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>The C01 type diaphragm coupling demonstrates effective performance in high-concentration seawater salt fog environments. However, the fastener material for this coupling must possess high mechanical properties and strong resistance to seawater corrosion. This study evaluates the suitability of 17\u22124 precipitation hardening (PH) stainless steel for diaphragm coupling fasteners through a series of tests, including pitting corrosion, crevice corrosion, stress corrosion, fatigue, galvanic corrosion, and cyclic immersion. The results show that the weight loss of 17\u22124PH stainless steel sample is 13.71% after pitting test and 7.73% after crevice test. However, after stress corrosion, fatigue, and galvanic corrosion tests, the 17\u22124PH stainless steel sample exhibits minimal corrosion sensitivity. These findings indicate that 17\u22124PH stainless steel is particularly susceptible to crevice and pitting corrosion. Consequently, 17\u22124PH shows no pronounced corrosion sensitivity within 15 days of exposure, supporting its provisional use in marine couplings subject to short-term salt fog environments, with caution regarding crevice corrosion risks. 17\u22124PH is suitable for marine coupling fasteners when combined with passivation, crevice sealing, or design optimization to mitigate pitting and crevice corrosion. Overall, this study provides an experimental basis for the application of 17\u22124PH stainless steel in diaphragm couplings under high salt fog environments.<\/jats:p>","DOI":"10.1371\/journal.pone.0336842","type":"journal-article","created":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T18:28:27Z","timestamp":1763404107000},"page":"e0336842","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["17-4PH stainless steel fastener for high salt fog open-air marine coupling"],"prefix":"10.1371","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7965-8021","authenticated-orcid":true,"given":"Angang","family":"Cao","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Yu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yigui","family":"Lu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"340","published-online":{"date-parts":[[2025,11,17]]},"reference":[{"key":"pone.0336842.ref001","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1155\/2022\/2435238","article-title":"Study on Stress Corrosion Properties of 1Cr17Ni2 Stainless Steel","volume":"2022","author":"A Cao","year":"2022","journal-title":"Advances in Materials Science and Engineering"},{"key":"pone.0336842.ref002","doi-asserted-by":"crossref","first-page":"15","DOI":"10.4028\/www.scientific.net\/SSP.118.15","article-title":"Study on the Microstructure and Mechanical Properties of 17-4 PH Stainless Steel Depending on Heat Treatment and Aging Time","volume":"118","author":"WD Yoo","year":"2006","journal-title":"SSP"},{"issue":"5","key":"pone.0336842.ref003","doi-asserted-by":"crossref","first-page":"587","DOI":"10.1016\/j.matchar.2007.04.018","article-title":"The spinodal decomposition in 17-4 PH stainless steel subjected to long-term aging at 350\u2009degrees C","author":"J Wang","year":"2008","journal-title":"Materials Characterization"},{"key":"pone.0336842.ref004","first-page":"777","article-title":"Microstructure and Properties of Nb, V and N Modified 17-4 PH Steel","volume":"117","author":"A Murthy","year":"2009","journal-title":"Transactions of the American Foundry Society"},{"key":"pone.0336842.ref005","doi-asserted-by":"crossref","first-page":"104576","DOI":"10.1016\/j.engfailanal.2020.104576","article-title":"Hydrogen embrittlement induced fracture of 17-4 PH stainless steel valve stem","volume":"113","author":"T Jiang","year":"2020","journal-title":"Engineering Failure Analysis"},{"key":"pone.0336842.ref006","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1016\/j.ijfatigue.2019.02.006","article-title":"Cyclic deformation and fatigue behavior of additively manufactured 17\u20134 PH stainless steel","volume":"123","author":"L Carneiro","year":"2019","journal-title":"International Journal of Fatigue"},{"key":"pone.0336842.ref007","doi-asserted-by":"crossref","first-page":"481","DOI":"10.1007\/978-3-030-36296-6_45","article-title":"The Effects of LENS Process Parameters on the Behaviour of 17-4 PH Stainless Steel","author":"I Mathoho","year":"2020","journal-title":"The Minerals, Metals & Materials Series. 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