@phdthesis{4862bdd5872f4267b1f00e5bf1d655fa,
title = "A Multiscale Study of the Structure, Transformation and Mechanical Behaviour of the NiTi B19' Martensite",
abstract = "This thesis presents a study on the B2-B19' martensitic transformation in NiTi shape memory alloys at different scales. It investigated the effects of point defects at the atomic level on the monoclinic angle of the B19'/B19{"} phase and revealed its structural flexibility; it studied a NiTi-Nb3Sn nanolamellae composite and demonstrated the effectiveness of the principle of “lattice stain matching” enabled by the martensitic transformation in inducing ultra-large elastic strains at the microscopic level; and it established a new theory and its mathematical model of the L{\"u}ders-type deformation behaviour of polycrystalline NiTi at the macroscopic scale and clarified a long-standing uncertainty.",
keywords = "NiTi, shape memory alloys, martensitic phase transformation, L{\"u}ders deformation, metallic composites, DFT calculation, synchrotron XRD",
author = "Yingchao Li",
year = "2023",
doi = "10.26182/y560-nk88",
language = "English",
school = "The University of Western Australia",
}