Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1636741 | Transactions of Nonferrous Metals Society of China | 2015 | 8 Pages |
Abstract
Terminal ballistic tests using 7.62 mm armor-piercing incendiary (API) projectiles were performed to evaluate the resistance to penetration of Ti-5Al-5Mo-5V-3Cr-1Zr (Ti-55531) alloy. The dynamic properties were determined by a split Hopkinson pressure bar (SHPB) test system. Ti-55531 plates were subjected to two kinds of heat treatments, leading to the formation of high-strength and high-toughness plates. The results of SHPB test exhibit that the maximum impact absorbed energy of the high-strength plate at a strain rate of 2200 sâ1 is 270 MJ/m3; however, the maximum value for the high-toughness plate at a strain rate of 4900 sâ1 is 710 MJ/m3. The ballistic limit velocities for the high-strength and high-toughness plates with dimensions of 300 mmÃ300 mmÃ8 mm are 330 and 390 m/s, respectively. Excellent dynamic properties of Ti-55531 alloy correspond to good resistance to penetration. The microstructure evolution related to various impact velocities are observed to investigate the failure mechanism.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yan-ling WANG, Song-xiao HUI, Rui LIU, Wen-jun YE,