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

Edgewise compression test on a sandwich structure , This test gives a basis...

This test gives a basis for evaluating the load-bearing capability of a sandwich structure when loaded in compression. The specimen should be at least 50 mm wide and the length sho

NIRAN, Why spiral model is called meta model?

Why spiral model is called meta model?

Cascaded, circit diagram and operation

circit diagram and operation

Outcomes of the fra - fire protection engineering, Outcomes of the FRA: ...

Outcomes of the FRA: When interpreting the outcomes of the FRA, NFPA 551 states that there are two ways in which the situation can be assessed to determine if it is acceptable

Radar engineering, Calculate the maximum range when radar operates at 10GHz...

Calculate the maximum range when radar operates at 10GHz and has peak power=10 Mwatt,S/N ratio=10dB,antenna cross section=100 mm2,target cross section=10mm2.The gain of transmittin

Composite materials - notation of axes, Notation for Body Axes The stan...

Notation for Body Axes The standard notation for the body axis sytem for aircraft dynamics. This sectionexplains the significance of the term body axis and develops the non-lin

Liquid crystal display (lcd), Liquid crystal display (lcd): Liquid Crys...

Liquid crystal display (lcd): Liquid Crystal Displays (LCD) are not actually light sources - they generate no light, merely filtering incident light, in a controlled manner.  T

Polymorphism, Q.  Define the polymorphism. Ans. POLYMORPHISM: It is d...

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

ENGINEERING SCIENCE, QUESTION 7 As a forensic materials expert – you have ...

QUESTION 7 As a forensic materials expert – you have been asked to identify a metallic powder found on the clothing of someone suspected of fabricating an incendiary device used i

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