Ballistic tests on hot-rolled Ti-6Al-4V plates:Experiments and numerical approaches  

作　　者：Alexander Janda Benjamin James Ralph Yael Demarty Marcel Sorger Stefan Ebenbauer Aude Prestl Ingo Siller Martin Stockinger Helmut Clemens 

机构地区：[1]Department of Materials Science,Montanuniversitat Leoben,Franz Josef-Straße 18,8700 Leoben,Austria [2]Department Product Engineering,Montanuniversitat Leoben,Franz Josef-Straße 18,8700 Leoben,Austria [3]French-German Research Institute of Saint-Louis,5 Rue du General Cassagnou,68300 Saint-Louis,France [4]voestalpine BOEHLER Bleche GmbH&Co KG,Boehler-Gasse 1,8680,Mürzzuschlag,Austria

出　　处：《Defence Technology（防务技术）》2023年第8期39-53,共15页Defence Technology

摘　　要：Superior ballistic performance and the lightweight character of Ti alloys are considered as main reasons for their use in armour applications against a broad spectrum of ballistic threats,e.g.bullet,fragment or blast impact.Because dynamic loading caused by typical penetrators is characterized by high strain rates,only specific test methods allow a closer investigation of the respective material behaviour.In the present study,quasi-static and dynamic compression tests as well as ballistic tests were conducted on a twophase a+βalloy Ti-6Al-4V(in m%)manufactured by hot-rolling.Post-deformation heat treatments,influencing microstructure and mechanical properties were applied in order to compare three different microstructural configurations:as-rolled,mill-annealed and bimodal.While,on the one hand,ballistic tests were employed for the determination of the ballistic limit velocity v_(50),compression tests,on the other hand,delivered essential input parameters for the application of the Johnson-Cook constitutive model in a finite element simulation of the impact event.The comparison of experimental results to simulation results was supplemented by means of microstructural characterization of tested samples with the focus set on the prevalently observed deformation and damage mechanisms,as for example adiabatic shearing.

关 键 词：TI-6AL-4V Ballistic performance Split Hopkinson pressure bar FE simulation Adiabatic shear bands Intermetallic phase 

分 类 号：TJ06[兵器科学与技术—兵器发射理论与技术]