@Article{icces.2024.013220,
AUTHOR = {Yuan Xu, Govind Gour, Manuela Galati, Abdollah Saboori, Antonio Pellegrino},
TITLE = {High-Rate Multiaxial Behaviour of Electron Beam Melted Ti-6Al-2Sn-4Zr-2Mo: An Experimental Study Using a Novel Tension-Torsion Hopkinson Bar Apparatus},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {31},
YEAR = {2024},
NUMBER = {2},
PAGES = {1--1},
URL = {http://www.techscience.com/icces/v31n2/58770},
ISSN = {1933-2815},
ABSTRACT = {The dynamic behaviour of Ti-6Al-2Sn-4Zr-2Mo additively manufactured by electron beam melting (EBM) is presented in this study considering synchronised tension-torsion loading. A bespoke spilt Hopkinson Tension-Torsion bar is used to generate combined tensile and torsional stress pulses that interact simultaneously with a novel specimen geometry. High-speed digital imaging correlation techniques are employed to assess the high-rate deformation and crack propagation of the specimen. The material's dynamic response was analysed across a spectrum of stress states, including uniaxial tension, shear, and combinations of tension and shear at strain rates ranging between 500 s<sup>-1</sup> and 2000 s<sup>-1</sup>. Comparable failure envelopes of EBM and conventionally manufactured Ti-6Al-2Sn-4Zr-2Mo are presented for the first time, in both quasi-static and dynamic conditions. Results show significant strain rate sensitivity and moderate tension-compression asymmetry. Further scanning electron micrography of the failure surfaces of tested samples indicates the influence of manufacturing defects, stress state, and loading rate on deformation and failure mechanism.},
DOI = {10.32604/icces.2024.013220}
}