“…Studies have found that Fe-SMA strips have a positive effect in countering the relaxation behavior of structures at elevated temperatures [ 142 ]. Furthermore, corrosion, creep, and relaxation behavior under extreme environments (e.g., high-temperature and chlorine environments) have been investigated which confirmed the suitability and reliability of Fe-SMA [ 120 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 ]. Another attractive advantage of Fe-SMA-based strengthening strategy is its re-prestressing property, i.e., HCF-induced relaxation in recovery stress can be restored through repeated rounds of thermal activation [ 18 , 134 , 151 ].…”