{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:54:16Z","timestamp":1787028856201,"version":"build-2736575974"},"reference-count":34,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2025,8,21]],"date-time":"2025-08-21T00:00:00Z","timestamp":1755734400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004663","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["2022YFB3706400"],"award-info":[{"award-number":["2022YFB3706400"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In high-altitude corrosive environments, weathering steel is widely applied due to its excellent corrosion resistance. However, the welded joint regions, where the chemical composition and microstructure undergo changes, are susceptible to the corrosion-induced degradation of mechanical properties. This study investigates the corrosion\u2013mechanical synergistic degradation behavior of a 16 mm thick Q500 qENH base metal and its V-type and Y-type welded joint specimens. Periodic immersion corrosion tests were conducted to simulate plateau atmospheric conditions, followed by mechanical performance evaluations. Corrosion metrics\u2014including corrosion rate, cross-sectional loss, penetration depth, and corrosion progression speed\u2014were analyzed in relation to mechanical indicators such as the fracture location, yield load, ultimate load, yield strength, and tensile strength at varying exposure durations. The results indicate that the corrosion process exhibits distinct layering, with a two-stage characteristic of rapid initial corrosion followed by slower progression. Welded joints consistently exhibit higher corrosion rates than the base metal, with the rate difference evolving nonlinearly in an \u201cincrease\u2013decrease\u2013stabilization\u201d trend. After corrosion, the mechanical performance degradation of welded joint specimens is more severe than that of base metal specimens.<\/jats:p>","DOI":"10.3390\/ma18163923","type":"journal-article","created":{"date-parts":[[2025,8,21]],"date-time":"2025-08-21T15:19:02Z","timestamp":1755789542000},"page":"3923","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Corrosion and Mechanical Properties of Q500 qENH Steel in Simulated Plateau Environment"],"prefix":"10.3390","volume":"18","author":[{"given":"Yanchen","family":"Liu","sequence":"first","affiliation":[{"name":"School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China"},{"name":"CSSC International Engineering Co., Ltd., Beijing 100121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Liu","sequence":"additional","affiliation":[{"name":"CSSC International Engineering Co., Ltd., Beijing 100121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7469-1084","authenticated-orcid":false,"given":"Tao","family":"Lan","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China"},{"name":"CSSC International Engineering Co., Ltd., Beijing 100121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zexu","family":"Li","sequence":"additional","affiliation":[{"name":"CSSC International Engineering Co., Ltd., Beijing 100121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guangjie","family":"Xing","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Xian University of Architecture & Technology, Xi\u2019an 710055, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuailong","family":"Song","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China"},{"name":"CSSC International Engineering Co., Ltd., Beijing 100121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1001","DOI":"10.1016\/j.corsci.2004.04.009","article-title":"Corrosion Resistance and Mechanical Properties of Low-Alloy Steels under Atmospheric Conditions","volume":"47","author":"Chen","year":"2005","journal-title":"Corros. Sci."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"365","DOI":"10.1016\/j.corsci.2007.06.020","article-title":"Characterization of the Rust Formed on Weathering Steel Exposed to Qinghai Salt Lake Atmosphere","volume":"50","author":"Li","year":"2008","journal-title":"Corros. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2818","DOI":"10.2320\/matertrans.43.2818","article-title":"Characterization of rust layers on weathering steels air-exposed for a long period","volume":"43","author":"Asami","year":"2002","journal-title":"Mater. Trans."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"750","DOI":"10.1016\/j.conbuildmat.2019.06.155","article-title":"Atmospheric Corrosion of Weathering Steels. Overview for Engineers. Part II: Testing, Inspection, Maintenance","volume":"222","author":"Morcillo","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1016\/j.corsci.2014.03.006","article-title":"Weathering Steels: From Empirical Development to Scientific Design. A Review","volume":"83","author":"Morcillo","year":"2014","journal-title":"Corros. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"438","DOI":"10.1016\/j.corsci.2014.07.011","article-title":"Characterization of Corrosion Products Formed on Ni 2.4 Wt%\u2013Cu 0.5 Wt%\u2013Cr 0.5 Wt% Weathering Steel Exposed in Marine Atmospheres","volume":"87","author":"Cano","year":"2014","journal-title":"Corros. Sci."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"2499","DOI":"10.1016\/j.corsci.2005.04.005","article-title":"Control of Fe(O,OH)6 Nano-Network Structures of Rust for High Atmospheric-Corrosion Resistance","volume":"47","author":"Kimura","year":"2005","journal-title":"Corros. Sci."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"126409","DOI":"10.1016\/j.matchemphys.2022.126409","article-title":"Corrosion Behavior of the Low Alloy Weathering Steels Coupled with Stainless Steel in Simulated Open Atmosphere","volume":"288","author":"Zhang","year":"2022","journal-title":"Mater. Chem. Phys."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"126183","DOI":"10.1016\/j.conbuildmat.2021.126183","article-title":"Correlation between Surface Concentration of Chloride Ions and Chloride Deposition Rate in Concrete","volume":"320","author":"Lehner","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"e10438","DOI":"10.1016\/j.heliyon.2022.e10438","article-title":"Atmospheric Corrosion Maps as a Tool for Designing and Maintaining Building Materials: A Review","volume":"8","author":"Santa","year":"2022","journal-title":"Heliyon"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1002\/maco.201709656","article-title":"Effect of Cu, Cr and Ni alloying elements on mechanical properties and atmospheric corrosion resistance of weathering steels in marine atmospheres of different aggressivities","volume":"69","author":"Cano","year":"2018","journal-title":"Mater. Corros."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1016\/j.corsci.2016.11.016","article-title":"Optimizing the Nickel Content in Weathering Steels to Enhance Their Corrosion Resistance in Acidic Atmospheres","volume":"115","author":"Cheng","year":"2017","journal-title":"Corros. Sci."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"424","DOI":"10.1016\/j.corsci.2013.05.008","article-title":"Influence of Alloyed Chromium on the Atmospheric Corrosion Resistance of Weathering Steels","volume":"74","author":"Qian","year":"2013","journal-title":"Corros. Sci."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1016\/j.corsci.2017.10.001","article-title":"Effect of Inclusions Modified by Rare Earth Elements (Ce, La) on Localized Marine Corrosion in Q460NH Weathering Steel","volume":"129","author":"Liu","year":"2017","journal-title":"Corros. Sci."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"172","DOI":"10.1007\/s40948-022-00482-3","article-title":"Crack propagation characteristics during progressive failure of circular tunnels and the early warning thereof based on multi-sensor data fusion","volume":"8","author":"Zhang","year":"2022","journal-title":"Geomech. Geophys. Geo-Energy Geo-Resour."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Rojhirunsakool, T., Thublaor, T., Bidabadi, M.H., Chandra-ambhorn, S., Yang, Z., and Gao, G. (2022). Corrosion behavior of multiphase bainitic rail steels. Metals, 12.","DOI":"10.3390\/met12040694"},{"key":"ref_17","first-page":"104","article-title":"Initial corrosion behavior of 550NH weathering steel in three typical atmospheric environments","volume":"57","author":"Li","year":"2024","journal-title":"Mater. Prot."},{"key":"ref_18","first-page":"8","article-title":"Study on corrosion behavior of weathering steel in typical atmospheric environments in Southwest China","volume":"2","author":"Yin","year":"2023","journal-title":"Adv. Mater. High Speed Railw."},{"key":"ref_19","first-page":"13","article-title":"Corrosion behavior of Q420 carbon steel in atmospheric environment of Western Sichuan","volume":"44","author":"Li","year":"2023","journal-title":"Corros. Prot."},{"key":"ref_20","first-page":"122","article-title":"Compilation of natural environment spectrum of airport in plateau area","volume":"20","author":"Niu","year":"2023","journal-title":"Equip. Environ. Eng."},{"key":"ref_21","first-page":"55","article-title":"Evolution law of corrosion product film of Q345qDNH bridge weathering steel in simulated industrial atmospheric environment","volume":"45","author":"Zhao","year":"2024","journal-title":"Corros. Prot."},{"key":"ref_22","first-page":"36","article-title":"Fatigue performance of weathering steel bridge base material Q345DNH in corrosive environments","volume":"41","author":"Feng","year":"2025","journal-title":"Traffic Transp."},{"key":"ref_23","first-page":"150","article-title":"Influence of cooling mode on mechanical properties of weathering steel for container","volume":"44","author":"Li","year":"2019","journal-title":"Heat Treat. Met."},{"key":"ref_24","first-page":"8+12","article-title":"Comparative study on properties of weathering steel and Q345B square tube","volume":"5","author":"Luo","year":"2017","journal-title":"Hebei Metall."},{"key":"ref_25","first-page":"90","article-title":"Corrosion behavior and mechanical properties of weathering steel expose to Qinghai Salt Lake atmospheric","volume":"124","author":"Wang","year":"2010","journal-title":"China Build. Mater. Sci. Technol."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"118317","DOI":"10.1016\/j.envres.2024.118317","article-title":"Regional Sources of NH3, SO2 and CO in the Third Pole","volume":"248","author":"Sharma","year":"2024","journal-title":"Environ. Res."},{"key":"ref_27","unstructured":"Wei, Z.J. (2019). The Research on Structure Property and Corrosion Behavior of Q450NQR1 High Strength Anti-Corrosion Steel. [Master\u2019s Thesis, Northeastern University]."},{"key":"ref_28","unstructured":"(2016). Corrosion of Metals and Alloys\u2014Removal of Corrosion Products from Corrosion Test Specimens (Standard No. GB\/T 16545-2015)."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Sun, R., Yu, Q., Zhang, Y., Yan, X., Lu, Y., Zhang, C., and Wang, Q. (2019). Effect of Si content on the corrosion behavior of 420 MPa weathering steel. Metals, 9.","DOI":"10.3390\/met9050486"},{"key":"ref_30","unstructured":"Zhang, B.Y. (2022). Experimental Study on Shear Resistance Capacity of the Corroded Weathering Steel High Strength Bolt Connection. [Master\u2019s Thesis, Xi\u2019an University of Architecture and Technology]."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"569","DOI":"10.1007\/s11440-020-01028-1","article-title":"Energy evolution analysis and failure criteria for rock under different stress paths","volume":"16","author":"Zhang","year":"2021","journal-title":"Acta Geotech."},{"key":"ref_32","unstructured":"Xing, G.J. (2024). Experimental Study on Mechanical Properties of Corrosion-Damaged Weathering Steel Welded Joints. [Master\u2019s Thesis, Xi\u2019an University of Architecture and Technology]."},{"key":"ref_33","first-page":"183","article-title":"Atmospheric Corrosion of Carbon Steels and Low-Alloy Steels","volume":"7","author":"Liang","year":"1995","journal-title":"Corros. Sci. Prot. Technol."},{"key":"ref_34","unstructured":"(2012). Code for Welding of Steel Structures (Standard No. GB 50661-2011)."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/16\/3923\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T18:33:15Z","timestamp":1760034795000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/16\/3923"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,8,21]]},"references-count":34,"journal-issue":{"issue":"16","published-online":{"date-parts":[[2025,8]]}},"alternative-id":["ma18163923"],"URL":"https:\/\/doi.org\/10.3390\/ma18163923","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,8,21]]}}}