Control of the bainitic structure for a wear-resisting hard-faced rail track
Author:
Suwanpinij Piyada12, Thonondaeng Thanaporn3, Kumma Parinya3, Suksawat Bandit4, Lothongkum Gobboon5
Affiliation:
1. The Sirindhorn International Thai-German Graduate School of Engineering, King Mongkut’s University of Technology North Bangkok , Bangkok 10800 , Thailand 2. Leibniz-Institut für Werkstofforientierte Technologien - IWT , Bremen , Germany 3. College of Industrial Technology, King Mongkut's University of Technology North Bangkok , Bangkok 10800, Thailand 4. Teacher Training in Mechanical Engineering , King Mongkut’s University of Technology North Bangkok , Bangkok 10800 , Thailand 5. Metallurgical Engineering , Chulalongkorn University , Phyathai Rd., Patumwan , Bangkok 10330 , Thailand
Abstract
Abstract
Carbide-free bainite with filmlike retained austenite structure has been reported for its higher wear resistance and toughness compared with conventional bainite and pearlite structure. In order to take advantage from such beneficial structure, this study employs the surface welding method with self-shielded wire electrode containing low carbon (0.15 mass%), high silicon, and nickel on two pearlitic rail steels, R260 and R350HT. The preheating temperature and other welding parameters were carefully selected to avoid too high dilution, which leads to martensite formation. The weld metal, heat-affected zone, and base material were investigated by scanning electron microscopy. Microhardness and wear tests were carried out to ensure improved properties after the surface repair. The results show significant improvements in hardness and wear rate in weld metal compared with the base material.
Publisher
Walter de Gruyter GmbH
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference27 articles.
1. M. Ueda, K. Matsushita, K. Iwano, et al.., “Development of long-life rails for overseas freight railways,” Nippon Steel Corporation, Tokyo, Japan, Nippon Steel & Sumitomo Metal Technical Report No. 105, 2013, pp. 63–71. 2. Tata Steel Europe Limited, Rail Technical Guide, Scunthorpe, UK, Tata Steel, 2014. 3. O. Popović and R. Prokic-Cvetković, “Surface welding as a way of railway maintenance,” in Mechanical Engineering, M. Gokcek, Ed., InTech, Rijeka, Croatia, 2012, pp. 233–252 [Online]. Available at: http://www.intechopen.com/books/mechanical-engineering/surface-welding-as-a-way-of-railway-maintenance. 4. M. N. SaifulAkmal and M. N. Wahab, “Characterization of UIC-54 rail head surface welded by hardfacing using flux-cored steel wire,” in Recent Trends in Manufacturing and Materials Towards Industry 4.0, M. N. Osman Zahid, A. S. Abdul Sani, M. R. Mohamad Yasin, Z. Ismail, N. A. Che Lah, and F. M. Turan, Eds., Singapore, Springer, 2021, pp. 763–775. 5. D. B. Arthur, B. A. Morrett, J. E. Beckham, and D. Sprenkel, “Flux cored arc welding,” in Welding Handbook. Volume 2, Part 1: Welding Processes, 9th ed., A. O’Brien, Ed., Miami, Florida, USA, American Welding Society, 2004, pp. 213–214.
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