Please explain better the context of you question, I suppose you have some very definite problem to solve. If not (if you are only interested in an abstract answer) you can follow the ptrevious suggestions. In any way, it is not possible to give a precise answer to your question without knowing to which material you are referring to.
Dear go through my paper publication, you will definitely find your answer.
Please explain better the context of you question, I suppose you have some very definite problem to solve. If not (if you are only interested in an abstract answer) you can follow the ptrevious suggestions. In any way, it is not possible to give a precise answer to your question without knowing to which material you are referring to.
Sir, I want to know the effect of recrystallization temperature range on the hardness and micro structure during casting of aluminium.
Please, which alloy? There are many casting aluminum alloys. Further, I' m sure you know casting alloys are normally not deformed after solidification, so a first approach to your question would be to say there is no effect, because people usually does not recrystallize a cast aluminum alloy. I am pretty sure there is more in your question, I am trying to help you define better your question. Please tell us:
1) Which alloy are you interested in?
2) What kind of heat treatment are you trying to apply?
3) What is the application you intend to use this alloy?
Dear Munish,
Independent of the material you are working on, the recrystallization temperature depend on your previous microstructure. But once you reach this temperature, this means that your material change its microstructure (recrystallize) loosing a high ammount of dislocations which rearrange in new networks or joining grain boundaries. At the same time grain boundaries become mobiles and there is an important grain growth.
Your new microstructure will have large grains with a low dislocation density. However the density of dislocation will not be zero and so you wil have lost the work-hardening of the previous material, still having enough mobile dislocations.
Then it is expected that your hardness (which is proportional to the yield point) will decrease a lot in comparison with the material before recrystallization.
Just one final comment. Usually the recrystallization temperature is rather high, and a this temperature other aspects of the microstructure could be simultaneously changing (for instance the size and distribution of precipitates), and this will depend on you material and initial microstructure, so I can not evaluate the effect of the recrystallization temperature on these aspects.
I hope this will be useful for you.
- Badges
- Science topic
- Similar topics
- Engineering
- Materials Engineering
- Annealing
- Metallurgy