|About this Abstract
||Materials Science & Technology 2020
||Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments
||Analysis of Heavy Ion Irradiation Damage in Commercially Pure Titanium and Titanium Alloys
||Aida Amroussia, Carl J Boehlert, Frederique Pellemoine, Wolfgang Mittig, David S Grummon, Thomas Bieler, Clara Grygiel, Meimei Li, Wei-Ying Chen, Isabelle Monnet
|On-Site Speaker (Planned)
Thanks to their good mechanical properties and low activation under irradiation, titanium alloys are selected for several applications in radioactive environments. The current study investigated the effect of ion irradiation damage on the microstructure and the nano-hardness in Ti and Ti alloys, namely commercially pure (CP) Ti and a two-phase α+β Ti-6Al-4V (wt.%) alloy processed through conventional powder metallurgy rolling (PM) and additive manufacturing (AM).
Radiation hardening was observed in all materials irradiated ex situ at 30℃ and 360℃. A strong dose dependence was observed especially for the PM α+β Ti-alloy. The resistance to radiation hardening in the AM Ti-alloy was higher than that for the PM rolled alloy due to its lamellar microstructure. The radiation-induced dislocation loop evolution was investigated through in situ TEM irradiation at different temperatures in Ti and AM Ti-6Al-4V. The dispersed barrier hardening model was successfully used to analyze structure-mechanics relationships in irradiated CP Ti.
||Planned: Publication outside of MS&T