NEW CLASS OF COMPOSITE BRONZE, ARMED WITH STEEL DENDRITES FOR ANTIFRICTION TECHNIQUE
- 1 Ural State Polytechnic University, Ekaterinburg, Russia
- 2 Universidad de Cienfuegos “Carlos Rafael Rodríguez”, Cienfuegos, Cuba
Abstract
Bronzes type BrZhNA 12-7-1 (12% Fe, 7% Ni, 1% Al) form dendritic structure that consists of a maraging martensitic steel 03N15Yu1 mesh, which arms matrix given bronze with content Cu – base, 5-6% Ni and 1% Al. Dendrites can be strengthen by dispersion hardening. Mass transfer phenomena during crystallization and heat treatment in these bronzes were investigated. This bronze has elevated mechanical and technological properties, low friction coefficient and high wear resistance level during sliding friction.