FIELD: metallurgy.
SUBSTANCE: method of thermomechanical treatment of workpieces from two-phase titanium alloys involves multi-stage severe plastic deformation with cumulative logarithmic deformation degree of not less than two and ageing. Severe plastic deformation of workpieces is performed with step-by-step temperature decrease at the interval of 0.99-0.3 of temperature of polymorphic transformation of alloy; at that, at the last stage of deformation the workpiece obtains the final shape. Prior to ageing the workpieces are heated up to temperature of 0.99-0.85 of temperature of polymorphic alloy transformation at the rate of not less than 50°C per minute and hardened.
EFFECT: increasing strength characteristics of two-phase titanium alloys and treatment process effectiveness.
3 cl, 1 tbl
| Title | Year | Author | Number |
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