title: Fatigue of Nitinol: The state-of-the-art and ongoing challenges.
abstract: Nitinol, a nearly equiatomic alloy of nickel and titanium, has been considered for a wide range of applications including medical and dental devices and implants as well as aerospace and automotive components and structures. The realistic loading condition in many of these applications is cyclic; therefore, fatigue is often the main failure mode for such components and structures. The fatigue behavior of Nitinol involves many more complexities compared with traditional metal alloys arising from its uniqueness in material properties such as superelasticity and shape memory effects. In this paper, a review of the present state-of-the-art on the fatigue behavior of superelastic Nitinol is presented. Various aspects of fatigue of Nitinol are discussed and microstructural effects are explained. Effects of material preparation and testing conditions are also reviewed. Finally, several conclusions are made and recommendations for future works are offered.
authors.affiliation: Department of Mechanical Engineering, Mississippi State University, Box 9552, Mississippi State, MS 39762, USA; Center for Advanced Vehicular Systems (CAVS), Mississippi State University, Box 5405, Mississippi State, MS 39762, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Mahtabi
authors.affiliation: Department of Mechanical Engineering, Mississippi State University, Box 9552, Mississippi State, MS 39762, USA; Center for Advanced Vehicular Systems (CAVS), Mississippi State University, Box 5405, Mississippi State, MS 39762, USA. Electronic address: shamsaei@me.msstate.edu.
authors.forename: Nima
authors.initials: N
authors.lastname: Shamsaei
authors.affiliation: Mechanics & Materials Consulting, LLC, 4447 Acrete Lane, Flagstaff, AZ 86004, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: Mitchell
mesh_terms: D000497:Alloys; D008422:Materials Testing; D055595:Mechanical Phenomena; D013314:Stress, Mechanical; D013696:Temperature
chemical_list: D000497:Alloys; C013616:nitinol
keywords: Cyclic behavior; Fatigue; Literature review; Nitinol; Shape memory alloys; Superelastic