Structure and Mechanical Properties of the Heat-Affected Zone of Restored Railway Wheels.
In: Materials Science, Jg. 51 (2016), Heft 4, S. 563-569
Online
academicJournal
Zugriff:
By using the results of investigation of the influence of heat treatment of 65G steel simulating the thermal-and-deformation cycle of reconstruction welding of railway wheels, it is shown that the resistance to brittle fracture of the wheel metal in its heat-affected zone can be increased to the level of the base metal by the formation of a bainite-martensite structure in this zone and holding for 2-3 h at 100°C in the course of its cooling after welding. As a result of this holding, the plasticity of the metal, its impact toughness, the fatigue threshold of cracked specimens, and cyclic fracture toughness become, respectively, 1.8, 2-3, 1.6, and 1.8 times higher and the strength remains almost constant. This is explained by the fact that the stresses of the second kind and local strains in the bulk of bainite and martensite strips become ~1.5 times lower. [ABSTRACT FROM AUTHOR]
Copyright of Materials Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Titel: |
Structure and Mechanical Properties of the Heat-Affected Zone of Restored Railway Wheels.
|
---|---|
Autor/in / Beteiligte Person: | Haivorons'kyi, О. ; Poznyakov, V. ; Markashova, L. ; Ostash, О. ; Kulyk, V. ; Alekseenko, Т. ; Shyshkevych, О. |
Link: | |
Zeitschrift: | Materials Science, Jg. 51 (2016), Heft 4, S. 563-569 |
Veröffentlichung: | 2016 |
Medientyp: | academicJournal |
ISSN: | 1068-820X (print) |
DOI: | 10.1007/s11003-016-9876-6 |
Schlagwort: |
|
Sonstiges: |
|