The Paton Welding Journal, 2010, №07



2010 №07 (10)

2010 №07 (02)

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TPWJ, 2010, #7, 4-7 pages
 
CAUSES OF CRACK FORMATION IN THE HAZ OF CAST HIGH-MANGANESE STEEL IN FLASH-BUTT WELDING


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 7, 2010 (July)
Pages                      4-7
 
 
Authors
S.I. KUCHUK-YATSENKO, V.I. SHVETS, Yu.V. SHVETS, T.G. TARANOVA and G.N. GORDAN
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Results of investigations of the causes of cracks forming in the HAZ of cast high-manganese steel 110G13L in its flash-butt welding to austenitic steel 08Kh18N10T are presented. It is shown that cracking is caused by segregational heterogeneity of distribution of phosphorus, which occurs both in solidification of castings and in the solid solution under thermal deformation conditions of welding. To prevent cracking, it is recommended to pay special attention to the process of homogenizing annealing of 110G13L castings.
 
 
Keywords: flash-butt welding, pulsed flashing, high-manganese steel 110G13L, austenitic insert, frog, HAZ, phosphorus segregation, cracks
 
 
Received:                ??.??.??
Published:               28.07.10
 
 
References
1. TU U DP 32-4520.13.500-007-2002:2006: Crossing and frogs with welded rail ends of R65, R50 and USC60 type with and without insert. Test batch. Valid from 01.01.2003 to 01.01.2006.
2. Kuchuk-Yatsenko, S.I., Shvets, Yu.V., Dumchev, E.A. et al. (2005) Flash butt welding of railway frogs with rail ends using an intermediate insert. The Paton Welding J., 1, 2-4.
3. Ershov, G.S., Poznyak, L.A. (1998) Formation of structure and properties of steels and alloys. Kiev: Naukova Dumka.
4. Kondratyuk, S.E., Kasatkin, O.G. (1987) Fracture of cast manganese steel. Kiev: Naukova Dumka.
5. Goudremont, E. (1960) Special steels. Vol. 2. Moscow: Metallurgizdat.

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