Extremely awesome, for the first time got interest to see the second part even though it is of higher running time. It was worthy to watch it too.....was searching for such a video ....well done sir..!!
@riteshmule77274 жыл бұрын
I will never forget this story in my whole life❣️ and I will not die before meeting you sir!
@Shreejigovindhari4 жыл бұрын
Lol, Since maximum hardness is at its peak, hence it decrease after peak point or over aging 😂😂😂😂😂😂😂👌
@shivampadmani3 жыл бұрын
Overaging vs Oversmart!!! LOL
@siddharthgandhi63422 жыл бұрын
Aa usual IITians being oversmart.
@ajayjoshi92564 жыл бұрын
best example of subltle humour and how material science can be fun to teach and learn. Thank you sir for your efforts. This is by far the best explanation on any subject in any of the nptel lectures i have come across. Thank you for your time sir.
@anuragsamaddar30592 жыл бұрын
I have never seen such a good teacher in my life.......such good teaching🔥Awesome Sir
@andrazgasar2224 жыл бұрын
Thank you, a have a test tommorrow at my UNI and I've missed the lecture on this topic and you've really helped me a lot! Thanks again, I just love the videos you publish!
@muntoia3 жыл бұрын
Finally an Indian which is speaking in a understandable way... Thanks professor
@SIVARAGHURAMMVMАй бұрын
Super teacher and interesting in understanding 😊
@abhinavjagetia52394 жыл бұрын
Thanks for sharing the awesome story. The lecture was really very informative not necessarily known and covered in classes.
@darkwarrior_agentj38795 жыл бұрын
Really good and patient explanation. Very good video.
@Karmayogi_R5 жыл бұрын
Really you too good sir , thanks for these videos it make to me understand engineering materials well .......thanks for this ME series of videos . We love you sir
@badayoutuber759 Жыл бұрын
God bless you sir , Best explanation ever.... Superb
@panigrahiabhisek0073 жыл бұрын
Sir you have a good sense of humour😊
@pleasesubscribe29873 жыл бұрын
well explained
@alchem1s73 жыл бұрын
Thank you Mr. I got very interested with the explanation Greetings from Mexico
@ranahamzakhudadadkhan5632 Жыл бұрын
Studying in Germany, listening to Indian Professor.🤗
@lorenzodamian36673 жыл бұрын
Thanks for your lecture. I works in aluminium extrusion factory. I would beg you to explained as easiest that you can for medium students like me. The process is heated billet 7 inch to 480C and extruded to 530C aprox and later tempering in a fan current 10 m ( to quenching 30 m/min) yo get 250C . And later agening. Thanks
@Mechaworkstudy4 жыл бұрын
Well explained sir.
@shreenivasap.h30733 жыл бұрын
very good explaination ..i got information
@Ponto22lr Жыл бұрын
How does pressure affects the hardening process of aluminium?
@Gaurav-rh3pq5 жыл бұрын
Thanx Sir,very well explained
@ankushsaha0073 жыл бұрын
Sir thank u🙏,because of u one day i might try to persue phd in this subject
@himanshushekhar45242 жыл бұрын
Sir, why we do quenching in first step after solution treatment. ? Instead we can do Normalizing.
@introductiontomaterialsscience2 жыл бұрын
If you do normalizing, that is slower cooling than quenching you may not be able to retain high temperature solid solution. Precipates will form while cooling itself. But this will happen at higher temperatures than used for aging after quenching. Precipates formed at higher tempeartures will be coarse and not as effective as fine ppts formed at lower aging temperatures.
@bitankumarnayak85282 жыл бұрын
Sir I love your research
@Roberto-co4uk3 жыл бұрын
The cliffhanger at the end of this video reminds me of watching anime
@deanharris71492 жыл бұрын
Well made, thank you.
@ShekharSuman16 жыл бұрын
Nicely explained. Concept cleared.
@Sharma39034 жыл бұрын
Great explanation
@zeeshanahmed97195 жыл бұрын
Sir is there any method to get the alloy at maximum hardness after aging and prevent it from over aging?
@teemum.9023 Жыл бұрын
Interesting
@naveentheking962 Жыл бұрын
Thank you sir
@kamohelot86774 жыл бұрын
Very helpful 💯💯
@HimanshuShekhar-ug1lq Жыл бұрын
After solution Treatment we do ageing. in Ageing after holding the sample at elevated temp. do we have to necessarily do air cooling or can we perform water quenching .???
@introductiontomaterialsscience Жыл бұрын
After ageing, air cooling is sufficient.
@himanshushekhar4524 Жыл бұрын
@@introductiontomaterialsscience you mean sir, we can do any of these Annealing, Normalizing and quenching??
@introductiontomaterialsscience Жыл бұрын
@@himanshushekhar4524 Cooling rate after aging should not matter. So you can either fast cool (quench) or skow cool (air) or very slow cool (furnace). Furnace cooling and air cooling in this case will not usually be called annealing or normalizing respectively. These terms are common for cooling of austenite phase in steel.
@himanshushekhar4524 Жыл бұрын
@@introductiontomaterialsscience Thankyou very much much sir....a lot of things has been cleared. Thankyou once again for responding 🙂
@samirmondal77816 жыл бұрын
Sir I am a regular viewer of your material class's , please suggest me how to study material for gate because my gate paper is polymer science and material science
@motiontv36212 жыл бұрын
How was your gate exam.
@TanmayM.633 ай бұрын
@@motiontv3621 🤣🤣🤣
@fariz50914 жыл бұрын
Hi, from micro structure aluminum we can get average size of precipitate and % distribution. what is the effect of each?
@introductiontomaterialsscience4 жыл бұрын
Higher the average size of the precipitate lesser will be its effectiveness in strengthening. I am not really sure how the distribution will affect the properties.
@sandeeprathee98594 жыл бұрын
Superb
@maheshdangeti36333 жыл бұрын
Super sir..
@zhangbarry17524 жыл бұрын
Thanks.
@vishu16503 жыл бұрын
Ty very much sir
@ryanfauzan52843 жыл бұрын
sir, thank you so much.
@saiputcha17305 жыл бұрын
"Because peak hardening is highest by definition, it is the highest", Er,...with all due respect, how is that even a reason to why a material's hardness should decrease with over-aging?
@rajeshprasad1015 жыл бұрын
It is NOT the reason.
@saiputcha17305 жыл бұрын
@@rajeshprasad101 I now understand sir that the reason is given in the next video. But, @10:35, it was said so, that's why I had a doubt.
@introductiontomaterialsscience5 жыл бұрын
Actually it was my attempt at humour. But I can see now that it can create confusion.
@lordchickenhawk5 жыл бұрын
@@introductiontomaterialsscience LOL!! I got it so it can't be all that confusing, I'm not THAT bright! :) ...which is why I really appreciate your video. Only somebody with a real grasp on their subject can make an explanation which the layman can then also grasp. Thanks!
@ajayjoshi92564 жыл бұрын
bhai wo majak tha . material science ke joke samajhne ke liye bhi concept clear hone chahiye. h
@adiraaz77363 жыл бұрын
at 10:35 , sir cracked a veri nice joke and nobody laughed out of ass except me :)
@messimagic25273 жыл бұрын
Sir you look like Nitesh Tiwari 😅...
@gautamkumarsahu302 жыл бұрын
Hahaha... Since the name is peak hardness, it has to decrease after that