SPARINGLY ALLOYED TITANIUM ALLOY Russian patent published in 2016 - IPC C22C14/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to nonferrous metallurgy, particularly to titanium alloys obtained from secondary raw material and having specified characteristics of strength and ductility. Alloy contains 0.1-3.0 Al, Fe 0.3-3.0, 0.1-1.0 Cr, Ni 0.05-1.0, Si 0.02-0.3, N 0.02-0.2, O 0.05-0.5, C 0.02-0.1, Ti - balance. Value of strength of molybdenum $${[Mo]}_{eq}^{etk}$$ and aluminium $${[Al]}_{eq}^{etk}$$ equivalents and reduced amount of equivalents are defined by expressions: $${[Al]}_{eq}^{etk}$$ = Al + 20 O + 33 N + 12 C + 3.3 Si, wt%, $${[Mo]}_{eq}^{etk}$$ = Cr/0.8 + Fe/0.7 + Ni, wt%, $${\Sigma }_{eq}^{etk}$$ = 1.11 $${[Al]}_{eq}^{etk}$$ + 0.92 $${[Mo]}_{eq}^{etk},$$ where value of given sum $${\Sigma }_{eq}^{etk}$$ of equivalents is 5-22. Value of given sum $${\Sigma }_{eq}^{etk}$$ of equivalents ranges from 5 to 10 for welded structures from 10 to 18 for flat rolled stock, from 18 to 22 for structural purposes.

EFFECT: alloy is characterised by high values of strength and ductility.

4 cl, 11 tbl, 3 ex