Results 161 to 170 of about 3,689,671 (208)

Laser welding of NiTi shape memory alloy: A review

Journal of Manufacturing Processes, 2018
Abstract NiTi shape memory alloys (SMA) are broadly employed in multifunctional systems in several industrial domains, like aerospace, automotive, biomedical and power plants. Their functional properties, which include shape memory effect (SME) and superelasticity (SE), offer a particular flexibility to design many smart components.
Mehrpouya, Mehrshad, Gisario, Annamaria, Elahinia, Mohammad   +2 more
openaire   +2 more sources

Thermomechanical cyclic stability of porous NiTi shape memory alloy

Materials Research Bulletin, 2017
WOS: 000412378500032It is known that shape memory and phase transition response of NiTi shape memory alloy (SMA) is dependent on mechanical or thermal background, and the presence of phases such as B2(NiTi), B19'(NiTi), Ni4Ti3, Ni3Ti2 and NiTi2.
Ömer Cakmak, Mehmet Kaya
exaly   +2 more sources

Cyclic deformation of NiTi shape memory alloys

Materials Science and Engineering: A, 1999
Abstract Recently, there is an increasing interest in applying the high damping capacity of shape memory alloys (SMAs). The purpose is to explore the feasibility of those materials for the protection of buildings and other civil constructions as a result of earthquake damages.
Yong Liu, Zeliang Xie, Jan Van Humbeeck
openaire   +1 more source

Plastic deformation of NiTi shape memory alloys

Acta Materialia, 2013
Abstract Dislocation slip in B2 NiTi is studied with atomistic simulations in conjunction with transmission electron microscopy (TEM). The atomistic simulations examine the generalized stacking fault energy (GSFE) curves for the {0 1 1}, { 2 ¯ 1 1 } and {0 0 1} planes.
Tawhid Ezaz, J. Wang, Huseyin Sehitoglu, H.J. Maier   +3 more
openaire   +1 more source

Machining of NiTi based shape memory alloys

Materials Science and Engineering: A, 2004
The machinability of NiTi based shape memory alloys has been examined. Starting with turning experiments, cutting parameters were varied within a wide range. In addition, the influence of the cooling lubricant concept was investigated. After reaching acceptable results for turning, the field of investigation was extended to the drilling process ...
K Weinert, V Petzoldt
openaire   +1 more source

Nanofretting behaviors of NiTi shape memory alloy

Wear, 2007
Nanofretting refers to cyclic movements of contact interfaces with the relative displacement amplitude at the nanometer scale, where the contact area and normal load are usually much smaller than those in fretting. Nanofretting widely exists in microelctromechanical systems (MEMS) and may become a key tribological concern besides microwear and adhesion.
Qian, Linmao, Zhou, Zhongrong, Sun, Qingping, Yan, Wenyi   +3 more
openaire   +2 more sources

Thermopower behavior for the shape memory alloy NiTi

Journal of Applied Physics, 2001
We report thermopower measurements for the nickel titanium shape memory alloy Ni0.507Ti0.493. Our measurements reveal abrupt changes in the temperature dependence of thermopower, which correlate well with the structural phase transition between the austenitic and martensitic phases.
J. Y. Lee, G. C. McIntosh, A. B. Kaiser, Y. W. Park, M. Kaack, J. Pelzl, Chul Koo Kim, Kyun Nahm   +7 more
openaire   +1 more source

The intermediate phase of the shape-memory alloy NiTi

Journal of Physics F: Metal Physics, 1985
The structural properties of equiatomic NiTi have been investigated by single-crystal neutron elastic scattering. The premartensitic phase transition of NiTi is characterised by a second-order displacive transition which is driven by a condensation of the T2A(110) phonon mode at Tc=75 degrees C.
H Tietze, M Mullner, P Selgert, W Assmus
openaire   +1 more source

Electrolytic processing of NiTi shape memory alloys

Materials Science and Engineering: A, 2004
Abstract The manufacturing of high-grade products made of nickel–titanium shape-memory alloys (NiTi-SMA) causes high demands on the surface finishing. The disadvantage of mechanical procedures is the emerging of deformation layers, whereas thermal treatment may lead to a modification of the function properties of the NiTi-SMA in the heat-affected ...
M. Pohl, C. Heßing, J. Frenzel
openaire   +1 more source

Corrosion resistance tests on NiTi shape memory alloy

Biomaterials, 1996
The corrosion performances of NiTi shape memory alloys (SMA) in human body simulating fluids were evaluated in comparison with other implant materials. As for the passivity current in potentiostatic conditions, taken as an index of ion release, the values are about three times higher for NiTi than for Ti6Al4V and austenitic stainless steels.
openaire   +2 more sources