Open AccessA novel method for sample preparation of SMA spring for micro-structural studies
Author(s) -
R. Santhanam,
Y. Krishna,
M. Sivakumar
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1055/1/012069
Subject(s) - sma* , shape memory alloy , spring (device) , austenite , martensite , nickel titanium , actuator , sample (material) , materials science , scanning electron microscope , coil spring , sample preparation , spring steel , spring 8 , composite material , structural engineering , computer science , engineering , artificial intelligence , microstructure , chemistry , chromatography , algorithm , beam (structure) , beamline
NiTi alloys are most widely used shape memory alloys (SMA). SMA in spring form is best suited for actuators as they can generate considerable forces and large displacements. Often it is necessary to know the micro structure of SMA to conclude their state as fully austenite or fully martensite at near room temperature. Sample preparation of wire for micro structural study is easier when compared to spring. This paper reveals a novel method of sample preparation for micro structural study using optical and scanning electron microscopes, of commercially available SMA spring in as received condition for which a prior history is unknown.