TY - JOUR
T1 - Effects of dynamic mechanical properties on the ballistic performance of a new near-β titanium alloy Ti684
AU - Li, Rongting
AU - Fan, Qunbo
AU - Gao, Ruihua
AU - Huo, Lirui
AU - Wang, Fuchi
AU - Wang, Yangwei
PY - 2014/10
Y1 - 2014/10
N2 - A comprehensive study of the newly developed near-β titanium alloy Ti684 has been carried out to determine the influence of the dynamic strength, dynamic hardness and critical failure strain on the ballistic impact properties. Two heat treatments of Ti684, namely β solution-treatment and α + β solution-treatment followed by aging, were carried out and the results were compared with Ti-6Al-4V. Ballistic impact tests were conducted on 7. mm thick front plates with a 20. mm thick A3 steel backing plate, using 7.62. mm armor piercing projectiles. The ballistic performance was evaluated by measuring the residual depth of penetration (DOP) in the A3 steel backing plates. It was found that the DOP values did not show obvious corresponding relation with both dynamic strength and dynamic hardness. The 800. °C solution +550. °C aged Ti684, which had the maximal dynamic strength, presented the worst ballistic performance, with a maximum DOP of 12.5. mm. In addition, the Ti-6Al-4V plate in the study with highest dynamic hardness did not show the best ballistic performance, having a DOP of 11.86. mm. However, as the critical failure strain increased, the DOP of the A3 steel backings were observed to decrease. This relationship was revealed from post ballistic microstructural observations.
AB - A comprehensive study of the newly developed near-β titanium alloy Ti684 has been carried out to determine the influence of the dynamic strength, dynamic hardness and critical failure strain on the ballistic impact properties. Two heat treatments of Ti684, namely β solution-treatment and α + β solution-treatment followed by aging, were carried out and the results were compared with Ti-6Al-4V. Ballistic impact tests were conducted on 7. mm thick front plates with a 20. mm thick A3 steel backing plate, using 7.62. mm armor piercing projectiles. The ballistic performance was evaluated by measuring the residual depth of penetration (DOP) in the A3 steel backing plates. It was found that the DOP values did not show obvious corresponding relation with both dynamic strength and dynamic hardness. The 800. °C solution +550. °C aged Ti684, which had the maximal dynamic strength, presented the worst ballistic performance, with a maximum DOP of 12.5. mm. In addition, the Ti-6Al-4V plate in the study with highest dynamic hardness did not show the best ballistic performance, having a DOP of 11.86. mm. However, as the critical failure strain increased, the DOP of the A3 steel backings were observed to decrease. This relationship was revealed from post ballistic microstructural observations.
KW - Ballistic performance characterization methods
KW - Dynamic mechanical property
KW - New near-β titanium alloy
UR - https://www.scopus.com/pages/publications/84902205970
U2 - 10.1016/j.matdes.2014.05.044
DO - 10.1016/j.matdes.2014.05.044
M3 - Article
AN - SCOPUS:84902205970
SN - 0264-1275
VL - 62
SP - 233
EP - 240
JO - Materials and Design
JF - Materials and Design
ER -