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- Title
STRUCTURE AND PROPERTIES OF RAILWAY WHEEL SURFACE AFTER RESTORATION SURFACING AND SERVICE LOADING.
- Authors
MARKASHOVA, L. I.; POZNYAKOV, V. D.; GAJVORONSKY, A. A.; BERDNIKOVA, E. N.; ALEKSEENKO, T. A.
- Abstract
Presented are the investigations of effect of composition of surfacing consumables on structure and phase composition of deposited metal of surfacing zones (surface, fusion line, HAZ) in restoration of railway wheels from grade 2 steel. Information received at different structural layers (from grain to dislocation) was used for analytical estimations of effect of parameters of forming structures on mechanical properties (σ0.2, K1c) of railway wheels, reconstructed by surfacing, before and after operation. Role of structural factors in change of level of local internal stresses τ1.in, i.e. sources of crack formation in subsurface layers of deposited metal, was investigated. It is determined that surfacing consumables of bainite and bainitemartensite classes provide for high indices of mechanical properties and crack resistance of railway wheels after restoration repair and operation.
- Subjects
BAINITE; WEAR resistance; METAL analysis
- Publication
Paton Welding Journal, 2015, Issue 5/6, p96
- ISSN
0957-798X
- Publication type
Article
- DOI
10.15407/tpwj2015.06.22