title: Mechanical and shape memory properties of porous Ni50.1Ti49.9alloys manufactured by selective laser melting.
abstract: Near equiatomic NiTi shape memory alloys were fabricated in dense and designed porous forms by Selective Laser Melting (SLM) and their mechanical and shape memory properties were systematically characterized. Particularly, the effects of pore morphology on their mechanical responses were investigated. Dense and porous NiTi alloys exhibited good shape memory effect with a recoverable strain of about 5% and functional stability after eight cycles of compression. The stiffness and residual plastic strain of porous NiTi were found to depend highly on the pore shape and the level of porosity. Since porous NiTi structures have lower elastic modulus and density than dense NiTi with still good shape memory properties, they are promising materials for lightweight structures, energy absorbers, and biomedical implants.
authors.affiliation: Dynamic and Smart Systems Laboratory, Mechanical Industrial and Manufacturing Engineering Department, The University of Toledo, 2801 W Bancroft St. MS 312 Toledo, OH 43606, USA; SM. Wu Manufacturing Research Center, College of Engineering, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Electronic address: mtaheri@umich.edu.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Taheri Andani
authors.affiliation: Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0503, USA. Electronic address: soheil.saedi@uky.edu.
authors.forename: Soheil
authors.initials: S
authors.lastname: Saedi
authors.affiliation: Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0503, USA. Electronic address: sadi.turabi@uky.edu.
authors.forename: Ali Sadi
authors.initials: AS
authors.lastname: Turabi
authors.affiliation: Department of Mechanical Engineering, Graduate University of Advanced Technology, 76311-33131, Kerman, Iran. Electronic address: m.karamooz@kgut.ac.ir.
authors.forename: M R
authors.initials: MR
authors.lastname: Karamooz
authors.affiliation: Dynamic and Smart Systems Laboratory, Mechanical Industrial and Manufacturing Engineering Department, The University of Toledo, 2801 W Bancroft St. MS 312 Toledo, OH 43606, USA. Electronic address: haberlandchristoph@gmail.com.
authors.forename: Christoph
authors.initials: C
authors.lastname: Haberland
authors.affiliation: Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0503, USA. Electronic address: karacahaluk@uky.edu.
authors.forename: Haluk Ersin
authors.initials: HE
authors.lastname: Karaca
authors.affiliation: Dynamic and Smart Systems Laboratory, Mechanical Industrial and Manufacturing Engineering Department, The University of Toledo, 2801 W Bancroft St. MS 312 Toledo, OH 43606, USA. Electronic address: mohammad.elahinia@utoledo.edu.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Elahinia
mesh_terms: D000497:Alloys; D001672:Biocompatible Materials / Q000032:analysis*; D007834:Lasers; D008422:Materials Testing; D009532:Nickel / Q000032:analysis*; D016062:Porosity; D019736:Prostheses and Implants; D013499:Surface Properties; D014025:Titanium / Q000032:analysis*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D009532:Nickel; D014025:Titanium
keywords: Additive manufacturing; Cyclic test of NiTi; NiTi; Plastic strain; Porous implant; Selective laser melting; Shape memory alloy; Stress shielding