Swift heavy ion irradiation damage in Ti–6Al–4V and Ti–6Al–4V–1B: Study of the microstructure and mechanical properties

Abstract

Keywords:Swift heavy ion (SHI) irradiation damage Microstructure Mechanical properties Ti-6Al-4V Ti-6Al-4V-1B a b s t r a c t The a + b alloy Ti-6Al-4V (wt.%) and the boron-modified Ti-6Al-4V-1B (wt.%), due to their low activation, corrosion resistance, good mechanical properties, and their commercial availability, were chosen as candidate materials for the beam dump for the Facility for Rare Isotope Beams (FRIBs) at Michigan State University: a new generation accelerator with high power heavy ion beams. Through this study our goal is to establish the first irradiation data of the recently developed Ti-6Al-4V-1B (wt.%) alloy and investigate the changes in microstructure and mechanical properties of Ti-6Al-4V due to swift heavy ion (SHI) irradiation damage. The results of hardness measurements showed that the studied Ti-6Al-4V (wt.%) and Ti-6Al-4V-1B (wt.%) alloy, under the specified irradiation conditions, exhibited a high irradiation resistance. In fact, only a slight hardening was observed ($13%) in the tested samples and no changes in the microstructure were observed. Temperature, dose and electronic excitation effects were also discussed.

Investigation of 500 keV Si ion induced surface structuring of Ni and Ti for enhancement of field emission properties

“…The metallic foils are irradiated with ion of energies 500 keV, 600 keV and 1 MeV at different temperatures ranging from 20 to 573 K. They observed that grain boundary migration occurs by atomic jumps due to hitting of thermal spikes and biased by the local grain‐boundary curvature driving force. Amroussia et al 19 studied the effects of Ar ions at an energy of 36 MeV and Xe ions at 92 MeV on surfaces of Ti–6Al–4 V and Ti–6Al–4 V–1B samples. They found that no microstructural changes were observed before and after irradiation.…”