TY - JOUR
T1 - Mechanical and shape memory properties of porous Ni50.1Ti49.9 alloys manufactured by selective laser melting
AU - Taheri Andani, Mohsen
AU - Saedi, Soheil
AU - Turabi, Ali Sadi
AU - Karamooz, M. R.
AU - Haberland, Christoph
AU - Karaca, Haluk Ersin
AU - Elahinia, Mohammad
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/4/1
Y1 - 2017/4/1
N2 - 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.
AB - 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.
KW - Additive manufacturing
KW - Cyclic test of NiTi
KW - NiTi
KW - Plastic strain
KW - Porous implant
KW - Selective laser melting
KW - Shape memory alloy
KW - Stress shielding
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U2 - 10.1016/j.jmbbm.2017.01.047
DO - 10.1016/j.jmbbm.2017.01.047
M3 - Article
C2 - 28189977
AN - SCOPUS:85012036967
SN - 1751-6161
VL - 68
SP - 224
EP - 231
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
ER -