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

Matlab, 2. Write a MATLAB program to perform discounted reward value iterat...

2. Write a MATLAB program to perform discounted reward value iteration. Show me the MATLAB code and also an output from your code for solving the problem provided in the data above

Math problems solutions matlab, Matlab is a 4th technology selection langua...

Matlab is a 4th technology selection language, which is designed by The MathWorks. It provides an exact processing atmosphere. Matlab works a variety of math features like design o

Aeroengines - compressible flow, All fluids are to some extent compressible...

All fluids are to some extent compressible but gases show significant changes in density if pressure and/or temperature is changed. Some gas flows can be treated as being incomp

Difference between elastic and plastic deformation, Q. State difference bet...

Q. State difference between elastic and plastic deformation. Ans. Elastic deformation: Elastic deformation is that the part of the deformed material, when the applied load is

Heisenberg''s uncertainty principle , According to this it is impossible to...

According to this it is impossible to specify precisely and simultaneously two physical quantities those are canonically conjugate to each other and the product of the uncertainty

Rated breaking torque, Consider a 3-hp, 220-V, 1800-r/min separately excite...

Consider a 3-hp, 220-V, 1800-r/min separately excited dcmotor controlled by a single-phase fully controlled rectifierwith an ac source voltage of 230Vat 60Hz.Assume that the full-l

Static aeroelasticity, An object, such as an aerofoil, moving through a flu...

An object, such as an aerofoil, moving through a fluid disturbs the surrounding flow field. The fluid velocity varies along the aerofoil surface creating a variation in pressure as

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