{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T03:13:51Z","timestamp":1772507631580,"version":"3.50.1"},"reference-count":26,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2024,3,4]],"date-time":"2024-03-04T00:00:00Z","timestamp":1709510400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Basic Scientific Research Business fee of Provincial undergraduate Universities in Heilongjiang Province","award":["145309614"],"award-info":[{"award-number":["145309614"]}]},{"name":"Basic Scientific Research Business fee of Provincial undergraduate Universities in Heilongjiang Province","award":["LH2022E116"],"award-info":[{"award-number":["LH2022E116"]}]},{"name":"Basic Scientific Research Business fee of Provincial undergraduate Universities in Heilongjiang Province","award":["E2021409021"],"award-info":[{"award-number":["E2021409021"]}]},{"name":"Heilongjiang Provincial Natural Science Foundation of China","award":["145309614"],"award-info":[{"award-number":["145309614"]}]},{"name":"Heilongjiang Provincial Natural Science Foundation of China","award":["LH2022E116"],"award-info":[{"award-number":["LH2022E116"]}]},{"name":"Heilongjiang Provincial Natural Science Foundation of China","award":["E2021409021"],"award-info":[{"award-number":["E2021409021"]}]},{"name":"Natural Science Foundation of Hebei Province","award":["145309614"],"award-info":[{"award-number":["145309614"]}]},{"name":"Natural Science Foundation of Hebei Province","award":["LH2022E116"],"award-info":[{"award-number":["LH2022E116"]}]},{"name":"Natural Science Foundation of Hebei Province","award":["E2021409021"],"award-info":[{"award-number":["E2021409021"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In this paper, the corrosion environment of a railway coal truck was simulated with 1.0%H2SO4 + 3%NaCl solution. The effect of weld toe Tungsten Inert Gas (TIG) remelting on the microstructure and corrosion resistance of welded joints of Q450NQR1 high-strength weathering steel was studied. The results show that the weld toe melts to form a remelting area after TIG remelting. After TIG remelting, the weld geometry was improved, and the stress concentration factor decreased from 1.17 to 1.06 at the weld toe, a decrease of 9.4%. TIG remelting refines the microstructure of the weld toe and improves the corrosion resistance of the welded joint. The surface of the TIG-remelted sample is uniformly corroded with no \u201cdeep and narrow\u201d pits after the removal of corrosion products. The weight loss rate and corrosion rate of remelted welds are lower than those of unremelted welds. The structure of corrosion products is loose at the initial stage of corrosion, and the corrosion products are transformed into Fe3O4 and Fe2O3 protective rust layers with a dense structure after 480 h of corrosion. With the extension of corrosion time, the tensile strength and percentage elongation of the specimen decreased linearly. The decreasing rates of tensile strength of remelted and unremelted specimens were 0.09 and 0.11, respectively, and the decreasing rates of elongation after fracture were 0.0061 and 0.0076, respectively.<\/jats:p>","DOI":"10.3390\/ma17051198","type":"journal-article","created":{"date-parts":[[2024,3,5]],"date-time":"2024-03-05T03:03:20Z","timestamp":1709607800000},"page":"1198","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Effect of Tungsten Inert Gas Remelting on Microstructure and Corrosion Resistance of Q450NQR1 High-Strength Weathering Steel-Welded Joints"],"prefix":"10.3390","volume":"17","author":[{"given":"Xuemei","family":"Li","sequence":"first","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"},{"name":"CRRC Qiqihar Rolling Stock Co., Ltd., Qiqihar 161002, China"},{"name":"The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China"},{"name":"School of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yang","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"},{"name":"The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rui","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"},{"name":"The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zicheng","family":"Li","sequence":"additional","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"},{"name":"The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingming","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"},{"name":"The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meng","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"},{"name":"The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Zhu","sequence":"additional","affiliation":[{"name":"School of Mechanical and Electronic Engineering, Qiqihar University, Qiqihar 161006, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiangxia","family":"Kong","sequence":"additional","affiliation":[{"name":"Department of Material Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"141186","DOI":"10.1016\/j.msea.2021.141186","article-title":"Microstructure and mechanical properties of 9Cr-0.5Mo-1.8W\u2013VNb (P92) steel weld joints processed by fusion welding","volume":"813","author":"Maduraimuthu","year":"2021","journal-title":"Mater. 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