what is the difference beteeen Annealing and stress
releaving

Answer Posted / devashish

ANNEALING: softens metal ; Stress Relieving:internal stress
are removed without affecting hardness

ANNEALING:at high temp. above Ac1 and Ac3 ; Stress
Relieving:sub critical pcs

ANNEALING:cooling rate is either slow or rapid i.e
non-uniform ; Stress Relieving:Uniform Cooling Rate

ANNEALING: diffusion may take place ; Stress Relieving:no
diffusion

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why same casting has different hardness and machine-ability properties?

521


How can you find out what kind of stainless steel was used in making a stainless object?

551


Describe strain aging based on dislocation theory?

554


State some precautions to be taken in case of powder metallurgy?

508


what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?

644






Define grinding.

706


How is solution annealing carried out? What type of furnace is required? Does one need to be heat in a salt bath?

501


On which basis annealing cycle of steel bars of UpTo 6 MTR can be decided.we r charging 40-45 metric ton load for annealing in bogie furnace?

1020


Why post-heating is done in alloy steel welding?

597


What is hardest cutting tool material?

715


Explain the purpose of riser?

618


Define what is the minimum temperature for stress relieving of astm a 519 gr.4130 material and please tell us where we can find the location.

525


Define what is the difference between diagrams of it and ct in heat treatment of steels?

606


The requirement for ASTM A217 Gr. WC9 castings for valves components like Body and Bonnet were Normalising at 920+/- 20 Deg. C and Tempring 780+/- 20 Deg. C The specification calls furnace shall be calibtated within +/-14 deg. C The Heat Chart shows minimum temperature for normalising 900 to 920 Deg. C, but maximum temperature 960-990 Deg. C Tempering 780+/-20 Deg. C is within limits and accepted. Casting having integral test bars, heat trated along with castings passed in chemical znalysis and mechanical properties. Since normalising maximum temperature is not meeting specification, where castings can be salvaged or renormalised and retempered to meet specification. Whether it will have affect on remechanical properties testing

1754


What is impact energy?

550