INVESTIGATION OF MICROHARDNESS AND MICROSTRUCTURE IN ULTRA-FINE GRAINED METASTABLE BETA-Ti ALLOYS PREPARED BY HIGH PRESSURE TORSION

Abstract

Metastable beta -Ti alloys, Ti-15Mo and Ti-6.8Mo-4.5Fe-1.5Al (TIMETAL LCB) were s ubjected to s evere plastic deformation (SPD) by high pressure torsion (HPT). The microstructure of these alloys was observed by scanning electron microscopy and microhardness evolution with increasing strain was investigated in detail.

Keywords

• INVESTIGATION
• MICROHARDNESS
• MICROSTRUCTURE
• ULTRA-FINE
• GRAINED
• METASTABLE
• BETA-Ti
• ALLOYS
• PREPARED
• HIGH
• PRESSURE
• TORSION