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

Aeroengine - axial flow compressor , An axial-flow air compressor consists ...

An axial-flow air compressor consists of 10 rotor/stator stages each built from p gblades of identical cross-section and designed such that the axial velocity is constant throughou

Physical significance of wave function , Wave function is a complex quantit...

Wave function is a complex quantity, which itself has no physical significance. But square of its magnitude gives the probability of finding a particle in a given volume of space a

Ideal intake conditions - aircraft engine, Ideal intake conditions: For...

Ideal intake conditions: For air to flow smoothly through a compressor, its velocity should be about 0.5 mach at the compressor inlet; this includes aircraft flying faster than

Process control, I have an assignment which I need help with

I have an assignment which I need help with

Events and its efffeccts, i need to prepare my aasingment for financial dat...

i need to prepare my aasingment for financial data analysis for that i need 10 business events

Define Thermal equilibrium, Thermal equilibrium The definition and measurem...

Thermal equilibrium The definition and measurement of temperature must be logically preceded by the concept of thermal equilibrium and the Zeroth law. To determine operationally wh

Pitot intakes - aircraft maintenance , Pitot intakes: This intake is su...

Pitot intakes: This intake is suitable for subsonic or low supersonic speeds. Examples, 707, 747, A300B, Tristar, etc. The intake is usually short and is very efficient becau

Quantitative, Case 1: Decision Analysis Flifla sells tomatoes every day in...

Case 1: Decision Analysis Flifla sells tomatoes every day in Suk al Marqazi, the downtown fruit and vegetable market. He finds that he can order tomatoes in crates of 25 kg and he

Excel, How do I finish a tough Engineering assignment in excel?

How do I finish a tough Engineering assignment in excel?

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