Temperature-induced precipitations in the memory alloy NiTi

A comparative study of a NiTi alloy subjected to uniaxial monotonic and cyclic loading-unloading in tension using digital image correlation: The grain size effect

“…The rod was cut into 70 mm long samples, encapsulated in quartz tubes under an Ar atmosphere and annealed in a muffle furnace at 700 °C for 48 hr followed by immediate water quenching. Such treatment scheme was selected taking into account the data on recrystallisation temperature and holding times in the literature [39][40][41][42][43][44]. Consequently, a single B2 phase with an average grain size of 100 ± 28 µm was obtained.…”