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

Clamper, what is clampers and how many types

what is clampers and how many types

Ticket EM134795S38_1, Do you receive my payment $480 for the Ticket EM13479...

Do you receive my payment $480 for the Ticket EM134795S38_1 today Feb 20/2017? Please inform me to know. My Email is: Thank you

Corporate debt market, identify the types of borrowers who have access to f...

identify the types of borrowers who have access to funds through the issue of debentures

Slipstream effect - propeller, Slipstream Effect. In passing through th...

Slipstream Effect. In passing through the propeller the air is accelerated and given a rotational velocity. The parts of the aircraft that are in the propeller slipstream wi

Problem, the royal canadian hillies plan to locate a brandy carryout in the...

the royal canadian hillies plan to locate a brandy carryout in the Yukan.A number of saint Bernard dogs ,trained by sergeant preston ,will be used to rescue lost tourists looking f

Aeronautical, apply equations to solve problems for specified aerodynamic a...

apply equations to solve problems for specified aerodynamic applications. Need some inputs regarding this.

Describe any three properties of mortars, QUESTION 1 a) Describe any th...

QUESTION 1 a) Describe any three properties of Mortars b) Each combination of coarse and fine aggregates has a specific water demand for a given mix fluidity or slump. What

Electronic engine control systems - aircraft engine, Electronic engine cont...

Electronic engine control systems : Advances in gas turbine technology have demanded more precise control of engine parameters than can be provided by hydromechanical fuel cont

Beam theory method , Here, it is assumed that the crack is effectively long...

Here, it is assumed that the crack is effectively longer than the value measured on the side of the specimen. If one assumes that it is longer by an amount Δ, then the new crack le

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