Affect of shock-induced phase transformations on dynamic strength of titanium alloys

✍ Scribed by Yuri I. Mescheryako; Alexandre K. Divakov

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 539 KB
• Volume: 26
• Category: Article
• ISSN: 0734-743X
• DOI: 10.1016/s0734-743x(01)00105-1

✦ Synopsis

A series of complex alloyed (@+~) VT-16 Titanium alloy targets were subjected to shock loading under uniaxial strain conditions within impact velocity range of 276-600 m/s. The tests reveal a presence of forward (0~-403) and (/I --*oJ) phase transitions at the load front and reverse (oJ --~/3 ) transition at the release front of compressive pulse. Duration of (~ -*o~) and (oJ --~/3 ) transitions is approximately 0.5 ps. When spallation happens after reverse (oJ ---~ phase transition, the spall-strength of alloy increases by 25%. Oscillating regime of that transformation proves to widen the impact velocity range where the spall-strength is maximum.