Polymorphism, Other Engineering

Assignment Help:

Q. Define the polymorphism.

Ans. POLYMORPHISM: It is defined as the change in atomic structure which occurs at a definite transformation temperature. The cooling diagram of iron. Iron exists more than one atomic structure depending upon temperature.

The melting point of iron is 1539 degree C. When molten iron solidifies from the liquid state at 1539 degree C and just below 1539 degree C, then the iron has B.C.C. structure.

This structure is called delta iron. When it is further cooled at 1401 degree C. The structure now converts into F.C.C. structure.

This is called γ iron, it is non-magnetic on further drop in temperature i.e. at 910 degree C it again converts in two B.C.C. structure. This is called α-iron. The α-iron is non magnetic up to 768 degree C.

When further drop in temperature from 768 degree C it becomes magnetic but atomic structure remains unchanged.


Related Discussions:- Polymorphism

Falling weight impact testing , Drop-weight impact towers are frequently us...

Drop-weight impact towers are frequently used to generate low velocity impact damage. Typically, the falling mass will be instrumented, containing a load-cell for measuring the lo

Range - Aircraft performance, Safe Operating Range The SOR is the max ...

Safe Operating Range The SOR is the max distance between airfields which the aircraft can fly with full allowance for headwind, diversion, stacking. • Distance flown in climb

Welding, why is it important to only strike the arc in the weld joint

why is it important to only strike the arc in the weld joint

Mpmc, .What is MASM? Explain its features

.What is MASM? Explain its features

LTE, WHATIS LTE CODING TECHNIQUES USE FOR MOBILE SYSTEM

WHATIS LTE CODING TECHNIQUES USE FOR MOBILE SYSTEM

Strain hardening, Q. Define the concept of strain hardening. Ans. S...

Q. Define the concept of strain hardening. Ans. Strain hardening or work hardening in metal occurs because of interaction between the this location and some of obstruction.

Maintenance of aircraft under “b” conditions, Maintenance of Aircraft under...

Maintenance of Aircraft under “B” conditions:   The maintenance of aircraft flying under "B" conditions must be adequate in relation to the number and duration of the flight

Differentiator, Differentiator: With negative feedback applied through ...

Differentiator: With negative feedback applied through a resistor and the input signal through a capacitor, the circuit will perform the mathematical operation of differentiati

General, why should an aircraft maintenance technician be familiar with wel...

why should an aircraft maintenance technician be familiar with weld nomenclature

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