The Formation of Nanodispersed Composite Metal Structure with Electroslag Surfacing

Abstract

Deposited metal requirements for cycled thermal-force operation were formulated. The influence of metal droplets and slag emulsion circular flow on the formation of an electroslag deposited metal structure is revealed. Micromorphology, ultimate composition and high-temperature properties of refractory deposited metal based on iron, nickel and nickel aluminide Ni 3 Al were studied. Nano-sized particles of intermetallic compounds of various origins are shown to increase the performance characteristics of refractory coatings in a cycled thermal-force operation at temperatures of 700 to 1100 °С.

Influence of Molybdenum Nanopowder Concentration on Welded Joint Microstructure

“…In practice for manipulation of structure formation and mechanical properties of welded joints [5] refractory particles are on purpose introduced in a metal bath for increasing the number of induced crystallization centers that leads to grain refining while hardening. Mentioned approach is used for grinding weld metal constituents [6,7]. Introducing of nanodispersed metal and nonmetal modifying powders directly to the welding pool contributes to better microstructure manipulation.…”