Abstract
The effects of aging under compressive stress of 300 MPa on the shape memory properties and microstructure of [1¯ 17]-oriented Ni45.3Ti29.7Hf20Pd5 single crystals were studied. It was revealed that stress-assisted aging resulted in 4 variants of the H-precipitates in contrast to 6 variants observed after stress-free aging. It was revealed that precipitate properties and martensite morphologies strongly depend on aging conditions. As a consequence of the aligned precipitates and generated internal stress, two-way shape memory effect (with up to 0.55–0.8% strain) and higher recoverable strains were observed in Ni45.3Ti29.7Hf20Pd5 single crystals after stress-assisted aging.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
