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

Steam distillation - purification of organic compounds, Steam Distillation ...

Steam Distillation - Purification of Organic Compounds This technique is applicable for the separation and purification of those organic compounds that are solids or liquids wh

Help, what category are Alkali-Metals on the periodic table?

what category are Alkali-Metals on the periodic table?

Melting point - physical charterstics of monocarboxylic acid, Melting point...

Melting point - physical charterstics of monocarboxylic acids (a) The melting points of carboxylic acids do not change smoothly from one member to other member. (b) The melt

Aufabau principle, Why are the lanthanides and actinides series call the f-...

Why are the lanthanides and actinides series call the f-block

Describe co-ordination covalent bond, Co-ordination covalent bond is produ...

Co-ordination covalent bond is produced by the mutual sharing of pair of electrons among two atoms contributed by only one of the combining atoms.

Explain heat of combustion, Explain heat of Combustion? Ans) The amount ...

Explain heat of Combustion? Ans) The amount of heat liberated when single mole of any substance is completely burnt in oxygen is known as heat of combustion H is negative for he

Equilibrium constant, What is the effect of the various concentrations of a...

What is the effect of the various concentrations of aniline hydrochloride on the ph and the X value, and what''s the logic behind all this

The formula of its phosphate, Chloride of metal is MCl 2  . The formula of...

Chloride of metal is MCl 2  . The formula of its phosphate will be: (1) M 2 PO 4                                                (2)  M 3 (Po 4 ) 2 (3)  M 2 (

Electrochemistry, construction and working of calomel electrode???

construction and working of calomel electrode???

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