Exploring the functional and corrosion behavior of friction stir welded NiTi shape memory alloy

2019 ◽  
Vol 47 ◽  
pp. 119-128 ◽  
Author(s):  
S.S. Mani Prabu ◽  
Chandra S. Perugu ◽  
Madhu H.C. ◽  
Ashutosh Jangde ◽  
Sohel Khan ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Corrosion Behavior ◽  
Niti Shape Memory Alloy ◽  
Friction Stir

Investigations on the actuation behaviour of friction stir–welded nickel titanium shape memory alloy using continuous fibre laser

2021 ◽  
pp. 251659842110154
Author(s):  
S. S. Mani Prabu ◽  
I. A. Palani
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Alloy ◽  
Nickel Titanium ◽  
Fibre Laser ◽  
Niti Shape Memory Alloy ◽  
Tool Selection ◽  
Maximum Displacement ◽  
Friction Stir ◽  
State Process

The friction stir welding (FSW) is found to be an effective solid-state process to join Nickel Titanium (NiTi) shape memory alloy. The retention of shape memory effect has enabled the welded NiTi alloy to be exploited in various functional applications. In this article, the NiTi sheets of 1.2 mm thickness are welded using FSW. The tool selection, geometry design and process parameters required to weld NiTi sheets are explored. Interestingly, an attempt is made to actuate the welded NiTi alloy, using laser actuation technique. The laser beam is scanned over the sample at a particular speed, enabling the increase in temperature suitable for physical actuation. A minimum and maximum displacement of 10 mm and 28 mm are recorded for the laser powers of 10 W and 50 W, respectively. Apart from laser actuation, the dynamic mechanical analysis of the welded NiTi alloy is investigated.

scholarly journals Effect of cobalt addition on the corrosion behavior of near equiatomic NiTi shape memory alloy in normal saline solution: electrochemical and XPS studies

RSC Advances ◽  
2018 ◽  
Vol 8 (34) ◽  
pp. 19289-19300 ◽  
Author(s):  
Nawal D. Alqarni ◽  
Joanna Wysocka ◽  
Nader El-Bagoury ◽  
Jacek Ryl ◽  
Mohammed A. Amin ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Corrosion Behavior ◽  
Normal Saline ◽  
Saline Solution ◽  
Niti Shape Memory Alloy ◽  
Cobalt Addition

The electrochemical and corrosion (uniform and localized) behavior of a binary Ni52Ti48shape memory alloy (SMA) and two ternary Ni52Ti48−xCox(x= 1.5 and 4.0 wt%) SMAs were studied.

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