scholarly journals Effect of Nickel Particle Size on Eactive Sintering Production of Niti Shape Memory Alloy

2016 ◽  
Vol 16 (4) ◽  
pp. 754-757
Author(s):  
Pavel Novák ◽  
Ivo Marek ◽  
Petr Dvořák ◽  
Tomáš Veselý ◽  
Vladimír Vojtěch ◽  
...  
Keyword(s):  
Particle Size ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Nickel Particle ◽  
Niti Shape Memory Alloy

EFFECTS OF PARTICLE SIZE AND SINTERING TEMPERATURE ON SUPERELASTICITY BEHAVIOR OF NiTi SHAPE MEMORY ALLOY USING NANOINDENTATION

2021 ◽  
pp. 2150024
Author(s):  
C. VELMURUGAN ◽  
V. SENTHILKUMAR
Keyword(s):  
Particle Size ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Sintering Temperature ◽  
Niti Alloy ◽  
Indentation Load ◽  
Niti Shape Memory Alloy ◽  
Recovery Ratio ◽  
Work Recovery ◽  
Niti Sma

The present study investigates the superelasticity properties of spark plasma sintered (SPS) nickel titanium shape memory alloy (NiTi SMA) with the influence of sintering temperature and particle size. The nanoindentation is conducted on the surface of the NiTi SMA at various loads such as 100, 300 and 500[Formula: see text]mN. The nanoindentation technique determines the quantitative results of elasto-plastic properties such as depth recovery in the form of superelasticity, stiffness, hardness and work recovery ratio from load–depth ([Formula: see text]–[Formula: see text]) data during loading and unloading of the indenter. Experimental findings show that the depth and work recovery ratio increases with the decrease of indentation load and particle size. In contrast, increasing the sintering temperature exhibited a better depth and work recovery due to the removal of pores which could enhance the reverse transformation. The contact stiffness is influenced by [Formula: see text] which leads to attain a maximum stiffness at the highest load (500[Formula: see text]mN) and particle size (45[Formula: see text][Formula: see text]m) along with the lowest sintering temperature (700∘C). NiTi alloy exhibited a maximum hardness of 9.46[Formula: see text]GPa when subjected to indent at the lowest load and particle size sintered at 800∘C. The present study reveals a better superelastic behavior in NiTi SMA by reducing the particle size and indentation load associated with the enhancement of sintering temperature.

Particle size reduction of NiTi shape-memory alloy powders

2000 ◽  
Vol 43 (12) ◽  
pp. 1111-1117 ◽  
Author(s):  
G.A Porter ◽  
P.K Liaw ◽  
T.N Tiegs ◽  
K.H Wu
Keyword(s):  
Particle Size ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Size Reduction ◽  
Niti Shape Memory Alloy ◽  
Particle Size Reduction

Impact protection behavior of NiTi shape memory alloy wires

2017 ◽  
Vol 700 ◽  
pp. 132-139 ◽  
Author(s):  
Chuanliang Shen ◽  
Zhipeng Wu ◽  
Zhenhai Gao ◽  
Xiaoyu Ma ◽  
Shengtong Qiu ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Shape Memory Alloy ◽  
Impact Protection

Superelasticity preservation in dissimilar joint of NiTi shape memory alloy to biomedical PtIr

Materialia ◽  
2021 ◽  
pp. 101090
Author(s):  
A. Shamsolhodaei ◽  
J.P. Oliveira ◽  
B. Panton ◽  
B. Ballesteros ◽  
N. Schell ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Dissimilar Joint ◽  
Niti Shape Memory Alloy

Thermal Diffusivity Measurement of a NiTi Shape Memory Alloy Using a Periodic Temperature Field

2021 ◽  
Vol 42 (10) ◽  
Author(s):  
José Ricardo Ferreira-Oliveira ◽  
Paulo César Sales da Silva ◽  
Luiz Roberto Rocha de Lucena ◽  
Rômulo Pierre Batista dos Reis ◽  
Carlos José de Araújo ◽  
...  
Keyword(s):  
Temperature Field ◽  
Thermal Diffusivity ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Shape Memory Alloy ◽  
Thermal Diffusivity Measurement ◽  
Diffusivity Measurement ◽  
Periodic Temperature
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