HIGH-STRENGTH FOUNDRY ALUMINUM ALLOY WITH CALCIUM ADDITIVE Russian patent published in 2020 - IPC C22C21/10 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy of aluminum-based materials and can be used in production of articles operating under high loads at temperatures of up to 150–200 °C, in particular, parts of aircrafts, cars and other vehicles, sports equipment parts, etc. Aluminium-based alloy contains following, wt%: 6.0–6.5 Zn, 1.0–1.5 Ca, 1.5–2.0 Mg, 0.5–0.8 Fe, the rest is aluminum. In particular cases during casting in graphite and steel mold the following level of mechanical properties is achieved without application of heat treatment: temporary resistance (σ_t) is not less than 330 MPa, yield point (σ_0.2) is not less than 220 MPa, relative elongation (δ) is not less than 4 %.

EFFECT: invention is aimed at creation of foundry high-strength aluminum alloy intended for production of shaped castings.

1 cl, 2 ex, 2 tbl, 4 dwg