Indicatory surface of anelastic-elastic properties of Ti alloys

Abstract

The simultaneous influence of hydrogen H and ultrasound deformation on internal friction Q ^− ^1 and dynamic elastic modulus E of intermetallic Ti _3 Al alloy after cutting and polishing were studied. The relaxation maximum of internal friction Q ^− ^1 _M1 at temperature Т _М1 ≈ 398 К, conditioned by the mechanism caused by reorientation interstitial atoms in dumbbell configurations H-H was discovered. Internal friction maximum Q ^− ^1 _M2 in intermetallic Ti _3 Al at temperature T _M2 ≈ 439 K was discovered with an activation energy H _2 = 0.86±0.1 eV. 2D and 3D atomic force microscopy microstructure images of Ti (VT8) alloy after mechanical and thermal treatment are presented. Strengthening of Ti alloys is related to the cooperation of dislocations with point defects.

Keywords

• anelastic-elastic properties
• alloys
• internal friction
• dynamic elastic modulus
• structural defects