Shape memory alloys, Physics

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.

Posted Date: 7/9/2012 3:13:20 AM | Location : United States

Related Discussions:- Shape memory alloys, Assignment Help, Ask Question on Shape memory alloys, Get Answer, Expert's Help, Shape memory alloys Discussions

Write discussion on Shape memory alloys
Your posts are moderated
Related Questions

Infra-Red (IR) Detectors:   An IR detector has an impedance of Z= (400+j200) ?  . During design  tests the detector  current  is measured  as  4  µA. What  is  the output v

why sky is blue

formula for time period of oscillation of magnet in a vibration magnetometer

Q. Distinguish between electric power and electric energy. Electric power i) Electric power is described as the rate of doing electric work. ii) Electric power is the cre

How to find out neutral point ? What all things we require to equate or form a equation to find the neutral poind and how to do it?

If each point of a surface is at similar potential, then it is known an equipotential surfac. or For a given charge distribution, locus of each and every positions having sim

How a CPH does stop or its speed decreases? Answer; it is a principle that Vc is stable thus that; gradV c =0 Thus, never V c increases or decreases.

It is the energy possessed by a body because of the interactive forces inside the object. This may be defined as the work done in assembling all the particles of a body in a exact

Explain about the laser cutting and welding. Laser cutting and Welding: Laser cutting is a technology which uses a laser to cut materials, and is generally used for industri