Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments
To elucidate the wear mechanism of rail steel welded joints in desert environments, we investigated the high-temperature friction and wear performance of U75V flash–butt welded rails across weld joints (normalised and non-normalised) as well as the base material at temperatures of 60, 200, and 300 °...
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| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425001292 |
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| author | Xi Zhang Tingting Liao Xing Liu Xiaoya Shen Ruotong Tian XinYi Yang Biao Guo Qibing Lv Guoqing Gou Xiao Huang |
| author_facet | Xi Zhang Tingting Liao Xing Liu Xiaoya Shen Ruotong Tian XinYi Yang Biao Guo Qibing Lv Guoqing Gou Xiao Huang |
| author_sort | Xi Zhang |
| collection | DOAJ |
| description | To elucidate the wear mechanism of rail steel welded joints in desert environments, we investigated the high-temperature friction and wear performance of U75V flash–butt welded rails across weld joints (normalised and non-normalised) as well as the base material at temperatures of 60, 200, and 300 °C. Owing to debris accumulation and the oxidised lubricating layer produced by the frictional process, all specimens exhibited elevated wear volumes accompanied by reduced friction coefficients with increasing temperature. The wear mechanism transitioned from adhesive wear to intense adhesive wear and ultimately delamination wear. Notably, owing to an optimised grain structure, the normalised joint demonstrated superior resistance against wear compared to its non-normalised counterpart under high-temperature conditions. These findings are anticipated to enhance rail quality within desert environments. |
| format | Article |
| id | doaj-art-cc75021ea25544519208dc36ffeabda0 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-cc75021ea25544519208dc36ffeabda02025-01-31T05:11:23ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013523372345Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environmentsXi Zhang0Tingting Liao1Xing Liu2Xiaoya Shen3Ruotong Tian4XinYi Yang5Biao Guo6Qibing Lv7Guoqing Gou8Xiao Huang9School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China; Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu, Sichuan, 610039, ChinaSchool of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, Sichuan, 611730, China; Corresponding author. School of Materials and Environmental Engineering, Chengdu Technological University, No. 1, Section 2, Citic Avenue, Chengdu, China.School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, Sichuan, 611730, China; Sichuan Jiaotong Inspection & Testing Co., Ltd., Chengdu, Sichuan, 611743, ChinaSchool of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, Sichuan, 611730, ChinaSchool of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, Sichuan, 611730, ChinaSchool of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, Sichuan, 611730, ChinaKey Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu, Sichuan, 610039, ChinaSchool of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, 610031, ChinaSchool of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, 610031, ChinaChina Railway Chengdu Bureau Group Co.,Ltd., Chengdu, Sichuan, 610082, ChinaTo elucidate the wear mechanism of rail steel welded joints in desert environments, we investigated the high-temperature friction and wear performance of U75V flash–butt welded rails across weld joints (normalised and non-normalised) as well as the base material at temperatures of 60, 200, and 300 °C. Owing to debris accumulation and the oxidised lubricating layer produced by the frictional process, all specimens exhibited elevated wear volumes accompanied by reduced friction coefficients with increasing temperature. The wear mechanism transitioned from adhesive wear to intense adhesive wear and ultimately delamination wear. Notably, owing to an optimised grain structure, the normalised joint demonstrated superior resistance against wear compared to its non-normalised counterpart under high-temperature conditions. These findings are anticipated to enhance rail quality within desert environments.http://www.sciencedirect.com/science/article/pii/S2238785425001292U75V railWelded jointHigh-temperature frictionNormalising |
| spellingShingle | Xi Zhang Tingting Liao Xing Liu Xiaoya Shen Ruotong Tian XinYi Yang Biao Guo Qibing Lv Guoqing Gou Xiao Huang Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments Journal of Materials Research and Technology U75V rail Welded joint High-temperature friction Normalising |
| title | Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments |
| title_full | Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments |
| title_fullStr | Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments |
| title_full_unstemmed | Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments |
| title_short | Effect of normalisation on the microstructure and wear resistance of U75V rail welded joints in desert service environments |
| title_sort | effect of normalisation on the microstructure and wear resistance of u75v rail welded joints in desert service environments |
| topic | U75V rail Welded joint High-temperature friction Normalising |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425001292 |
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