COBALT-BASED HEAT-RESISTANT CAST ALLOY AND ARTICLE MADE THEREFROM Russian patent published in 2019 - IPC C22C19/07 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, in particular, to heat-resistant alloys for parts of hot-path of gas-turbine engines and plants operating in aggressive media at temperatures of 750–1,000 °C. Heat-resistant foundry alloy based on cobalt contains, wt%: carbon 0.15–0.35, tungsten 6–8, nickel 9–11.5, boron up to 0.025, iron up to 2.0, chromium 27–35, silicon up to 1.0, manganese to 1.0, yttrium to 0.3, barium to 0.1, cobalt – the rest.

EFFECT: alloy is characterized by high values of long-term strength at temperatures of 815–870 °C, corrosion resistance, as well as high structural stability for life.

2 cl, 2 tbl, 5 ex