Discuss the various annealing processes, Chemistry

Assignment Help:

Explain objectives of annealing? Discuss the various annealing processes? Is spheroidising different from annealing? Illustrate.

A  slow  cooling  rate  from  eutectoid  temperature  yields  course  pearlite  -  a  mixture  of comparatively coarse crystals of ferrite and  cementite. Such a slow cooling is known as annealing. Here,  sufficient  time  is  available  for  carbon  in  the  austenite  to  diffuse  and  redistribute itself to 0.02% in ferrite and 6.67% in cementite.  During annealing, effective transformation temperature  is  low,  where  rate  of  growth  is  rapid  compared  to  rate  of  nucleation. Hence, spheroidising is obviously different from annealing.

 


Related Discussions:- Discuss the various annealing processes

Reaction involving cleavage of with removal of h as proton, Reaction involv...

Reaction involving cleavage of with removal of 'H' as proton Alcohols are stronger acids as compared to terminal acetylene but are not acidic enough to react along with aqueous

Chemicals in food, Chemicals in food Several chemicals are added to foo...

Chemicals in food Several chemicals are added to food for their preservation and improving their appeal. These involve flavorings, antioxidants, fortifiers, sweeteners, dyes, e

Hydrogen, what is water gas and how is it prepared?

what is water gas and how is it prepared?

Name the location where protein synthesis occurs, a) Write the following ab...

a) Write the following about protein synthesis: (i) Name the location where protein synthesis occurs. (ii) How do 64 codons code for only 20 amino acids? (iii) Which of t

Explain a first order reaction, A first order reaction takes 69.3 minutes f...

A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.

Melting points, what is the m.p naphthalene,ammonia oxalate,citric acid ,na...

what is the m.p naphthalene,ammonia oxalate,citric acid ,naphthyl acetic acid

Ebullioscopy, graphical representation &mathematical treatment

graphical representation &mathematical treatment

Functional group tests, how do we test for functional groups in chemistry l...

how do we test for functional groups in chemistry lab

Calculate Wavelength, Ask question #Minimum 100 words acceWhen an electron ...

Ask question #Minimum 100 words acceWhen an electron beam strikes a block of copper, x-rays of frequency 1.07 x 10 19 Hz are emitted. What is the wavelength of these x-rays?pted#

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