FIELD: methods for production of titanium alloys with invar properties. SUBSTANCE: method includes thermomechanical treatment of alloys containing 50-66 wt. -% of tantalum and titanium, the balance. Treatment consists in hardening from beta-region 5-7% deformation at room temperature and heating to temperature of reverse martensitic conversion. EFFECT: provision of obtaining thermal expansion coefficient within 1•10-6K-1 that corresponds to the best specimens of superinvars.
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