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

Ignition systems in aircraft engine, IGNITION SYSTEMS The outline of a ...

IGNITION SYSTEMS The outline of a high energy ignition system is illustrated in the figure. Each high energy ignition unit has a low voltage supply which is controlled by the

Engine protection devices - aircraft engine, Engine protection devices : ...

Engine protection devices : Described below are typical protection devices that will override any excessive demands made on the engine by the pilot or by the control units.

Power systems, WHY VOLTAGE GENERATED IN MULTIPLES OF 11

WHY VOLTAGE GENERATED IN MULTIPLES OF 11

NIRAN, Why spiral model is called meta model?

Why spiral model is called meta model?

Can you help in my assignment, can you help me in my assignment in Engineer...

can you help me in my assignment in Engineering project and operation management course??

Types of engine, TYPES OF ENGINE: The internal combustion engines for the ...

TYPES OF ENGINE: The internal combustion engines for the automotive use may be classified according to the following considerations: Engine cycle Number of strokes F

Intake anti-icing of aircraft engine, Intake anti-icing Operations of p...

Intake anti-icing Operations of present day aircraft necessitates flying in all weather conditions plus the fact that high velocity air induced into the intakes means a provisi

Capital structure of X Ltd. as on 31st Dec 2003, The following is the capit...

The following is the capital structure of X Ltd. as on 31st Dec 2003 Rs in m

Turbine engines cooling , Turbine engines cooling : Turbine engines are...

Turbine engines cooling : Turbine engines are designed to convert heat energy into mechanical energy. The combustion process is continuous and, therefore, heat is produced. On

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