Shape memory alloys, Physics

Assignment Help:

SHAPE MEMORY ALLOYS: A group of metallic materials that can return to some previously defined shape or size when subjected to the appropriate thermal producer. That is to say, shape memory alloys can be plastically distorted at some comparatively low temperature and, upon exposure to higher temperature, will come again to their original shape. Materials that exhibit the shape memory effect include a number of copper alloy and systems and of gold –cadmium, nickel-aluminium, and iron-platinum. Shape memory property possessed by certain alloys that allows them to return when heated, to their original shape after having been performed, it undergoes a martens tic (or a thermal) transformation a solid state transition that rapidly changes the crystalline structure of the alloy without thermal activation that is readily reversed once an appropriated amount of heat is applied. Among the alloys are copper aluminium nickel, copper-zinc-aluminium, nickel titanium, and iron-manganese silicon.

APPLICATIONS: The shape memory alloys are used in the heat activated fasteners, switches, eyeglass frames, orthopaedic devices, teeth braces and blood clot filters.


Related Discussions:- Shape memory alloys

Determine the mutual inductance of the two coils, When the current in the p...

When the current in the primary coil of 400 turns of a magnetic circuit, enhances linearly from10mA to 35mA in 100ms, an e.m.f. of 75mV is induced into the secondary coil of 240 tu

..periodic table, assignment complete the following table

assignment complete the following table

What is surface energy, The free surface of a liquid always has a tendency ...

The free surface of a liquid always has a tendency to contract and possess minimum surface area. If we want to enhance the surface area of the liquid, work has to be done. This wor

State the working of Unijunction Transistors, State the Working of UJT ...

State the Working of UJT    Make  circuit  arrangement  as  demonstrated in  fig.(c),  where  UJT  is represented  by  its  equivalent  circuit  comprising resistances  R B1

Calculate the mass of a proton, The mass of a proton and of an antiproton i...

The mass of a proton and of an antiproton is 1.00728 u. Recall that the conversion of exactly 1 u into energy yields 931.5 MeV. a. Measure the mass used up when a proton and

Explain ultra violet waves, Ultra violet Waves: The wavelength of ultra...

Ultra violet Waves: The wavelength of ultra violet wave from 380mm down to 60nm.

Work and energy, landfalls is a natural disasters, and to determine how fas...

landfalls is a natural disasters, and to determine how fast and how far mass movement moves can work energy equations be used.

What is its potential energy in joules, Assume a crane lifts a 900 kilogram...

Assume a crane lifts a 900 kilogram wrecking ball 12 meters above a concrete slab.  105,840 Joules of potential energy are kept in the wrecking ball.  Now the ball is dropp

Explain constant current system, Explain Constant current system Const...

Explain Constant current system Constant current system : - In this process, the charging current is kept constant by varying the supply voltage to overcome the enhanced back

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd