Feel proud .... Completed my degree under his guidance.....A true gem of IITD

@abrarahmadansari8813

4 жыл бұрын

Yes bro..he is really nice teacher, explain very well.

Sir, how can I express my gratitude n respect towards you... Honerable sir, please accept my Namashkaram for increasing our knowledge with such a simple n excellent lectures

After watching this, the concept of PHASE DIAGRAM is crystal clear......

Wow! This is an _AMAAAAAZING_ description of the phase diagram. Your calm and thorough explanation of each detail made it much more understandable for me than the wild and frenetic pace at which my physics class is ordinarily taught that usually makes my brain whirl. I was absorbing the material rather than watching it whiz by as a flurry of color, points and random lines on a chart. 😰 Thank you for taking your time to share your knowledge! You are a _blessing!_ 🌟Thank you so much! 📚🌼

The best teacher in this area. I am doing PhD in Shanghai and my Chinese labmates also watch these videos.

If you are preparing for exam one night before like me. I’ll suggest you to increase playback speed to 1.5x. 😇

@_parthopal

Жыл бұрын

I am preparing 2 hours before my exam😢

@Bharat_Kumar_o1

8 ай бұрын

It's slow in even 2x

@rajkale69

8 ай бұрын

8 hrs before😊

Fantastic sir, thanks for sharing your valuable knowledge to us

truly a gem for any materials science student

Best explanations sir thaq u very much for guidance sir....

Wonderful teaching experience,, I am very very thankful to you sir

What an explanation sir ! ...thank u so much 🙏

#GATEWaytoESE learned a lot from you Sir , After watching your video and by reading W.D.Callister , i started teaching material science . Thank you so much Sir

u can feel that this teacher is not just a teacher but a scientific

I am in Alexandria university Egypt and despite the distance between Egypt and india he really helped me

Wow sir your explanation is amazing...😍

Best explanation sir Thank you so much

Thank you so much sir for grabbing these info in a clear cut way

Very clean and super explanation sir,,,,,,👏👏👏

Thanks this was explained in a very simple and beautiful way ❤️❤️

Wonderful lectures. Thanks Sir

Really your a gem of a person sir

Fantastic resource. Thank you

Thank you sir for explaining with such simplicity.

Thank you..I think we can maintain safety warnings against sudden change of transition in phases

best video to understand phase diagram.thank you.

great video very informative but easy to understand thank you !

You make complicated things become so easy.

Tremendous knowledge sir 🙏🙏🙏🙏🙏

very very superb explanation sir !!

Maximum time I feel boared and sleepy by listening the lectures given by our professor But your is awesome 👌 I am laying down bed but still awake ⏰️ Sorry for bad English.

Beautifully explained.

Superb explanation sir

on viewing this video,now i will understand the concept behind the phase diagram(specially iron-carbon diagram).thank you for such a enlightening video

@nicolegiacca

Жыл бұрын

in iron-carbon diagram you will not find substition, bcs. Fe and C has another structures (here have Ni and Cu both CCP structures, that why is substititon possible). In Fe and C diagram you will find interstitials - basicaly explaind: In each structure, there are free spaces, vacancies or cavities, so-called interstitials, between individual atoms and ions. If an ion or atom is placed in such a vacancy, we speak of interstitial substitution or interstitial solid solution. Electrical neutrality must also be maintained with this type of substitution.

i don't know what to say i can't believe i finally understood thnkuu so much

Super explanation on this topic

Tq sir I got it yesterday in exam It helps me allot Tq so much sir

So well explained, thanks sir

Excellent teaching......

amazing explanation thankyou sir

Thanks for your kind information......

hi sir, can the alpha, beta phases separable in solid state. As you said mechanically separable.

Great video - thank you!

if this man would be my professor, i'd be a scholar no joke.

Good explanation 🥰🥰

great explanation continue

You are amazing sir❤

Best explanation ever

Very nicely explained

you are unique sir😍

Amazing 🌟

Amazing explanatuon, thanks you

great explanation

Best explanation sir

Thank you sir. What book is recommended for this course?

Hand writing 🔥🔥

king of engineering !!

sir i love the way you teach

Are these written notes available somewhere in form of slides?

excellent video

Very helpful sir, keep making more of such course materials

@aniketniranjanmishra6914

5 жыл бұрын

@@UtkarshSingh-sp9op KZread please block this offensive user

@nishantnaman3891

5 жыл бұрын

@@aniketniranjanmishra6914 😁😁😁

@johnrebeiro1066

4 жыл бұрын

why not fine materials instead of course material :p

The most thorough explanation on the net.

@prasanna4418

3 жыл бұрын

Bro has he completed material science for all competitive exams?

WOW thank you!!

Sir is there any difference between phase diagram and equilibrium diagram ?

Wonderful but a bit slow explanation ..so watching it in 1.25x 😉..thank you sir

I owe you my life

Thanks Sir ❤👍✌

Plz suggest any best book for material science concepts.

Best with playback speed=1.5*

You are legend

Itna accha koi kaise padha sakta hai....!!!!

Sir, your explanation is very good throughout the video, but I would like to add a point to this, these all things are true if we assume pressure remains constant. Though in your definition of equilibrium phase diagram you gave a clue that we can see variation with pressure as well, indicating you assumed it constant in temperature and composition phase diagram.

@introductiontomaterialsscience

4 ай бұрын

Yes, you are right. We are discussing constant pressure diagrams with P=1 atm.

I started loving material science.

Thank you sir

Sir ,what is supercolling?

Thank thanku so much for this video

Please upload video lecture on ternary phase diagram.

Nice sir

👍👍👍👍👍

ty very much sir

What is beta and gamma phase?

Hello sir I have a doubt : Why do alloys melt over a range of temperatures?

@introductiontomaterialsscience

Жыл бұрын

This can be explained using free-energy composition curves. I have not discussed this concept in this series, but you can check books or website.

Cubic close packed is also termed as FCC (Face centered cubic)

@introductiontomaterialsscience

Жыл бұрын

It is quite common to consider CCP and FCC as synonyms. However, I wish to distinguish between them. I consider FCC as one of the 14 Bravais lattices and CCP as a crystal structure with FCC as its lattice and a single atom motif located at 0,0,0. Thus CCP is only one of the structures which can be based on an FCC lattice, Other examples of structures with FCC lattice are Diamond Cubic and NaCl.

Love you sir

Sir is Cu Ni alloy a disordered solid solution or ordered solid solution?

@introductiontomaterialsscience

3 жыл бұрын

It is disordered

@prakharbhalla9461

3 жыл бұрын

@@introductiontomaterialsscience sir even for compositions such as AB, A2B or A3B also will it be disordered? Because in phase diagram we get a single phase solid CCP for all compositions. which will not be the case if it becomes ordered for compositions like A2B or A3B.

@rajeshprasad101

3 жыл бұрын

@@prakharbhalla9461 You are right. Cu-Ni alloy is disordered at all compositions.

@prakharbhalla9461

3 жыл бұрын

@@rajeshprasad101 thanks sir

Well

Is this a btech lecture for mechanical engeenering

@introductiontomaterialsscience

3 жыл бұрын

At our institute B.Tech students of Materials, Mechanical, Chemical, Biotechnology take this course,

it will be very appreciated if it's was ppt presentation, by the way video was nice sir

tq sir

Sir why we considered Ni presentation in this...mean why not cu?...kindly give me ans

@rajeshprasad101

4 жыл бұрын

I have taken %Ni as the concentration. You can take %Cu as well. Two are related %Cu=100-%Ni and both are correct.

@aishanazir8958

4 жыл бұрын

@@rajeshprasad101... thank u sit

@aishanazir8958

4 жыл бұрын

Sir

Respected Sir , I am a dental student and I have a Equilibrium phase diagram of Silver -tin system in my Dental Materials Subject. I hardly understand anything in that diagram.. kindly help me with that 🙏

@introductiontomaterialsscience

3 жыл бұрын

It appears complicated, but not more so than the Fe-C diagram discussed later in this course. The three horizontals correspond to three invariant reactions. The lowest temperature one is a eutectic and the other two are peritectic. If you complete all the videos in the phase diagram playlist it will help.

@ujjwalasingh7925

3 жыл бұрын

@@introductiontomaterialsscience Ok Sir🙏

Got to see this a little late

But i suggest that this subject is not for 1 day... It requires a full time...

IIITian here

APL102 waale kitne hai?? xD

Thankyou sir you are saving me from getting 0 in viva ☺️

As far as i know, Ni alloy is FCC, isn't it?

@rajeshprasad101

5 жыл бұрын

I am calling it Cubic Close Packed (CCP) which describes the crystal structure. CCP crystal structure is FCC lattice with one atom basis. If you call it FCC you are giving only the lattice. Basis information is missing. Often by saying FCC we assume a single atom basis. But consider NaCl which also has FCC lattice but has two atom basis and is thus not CCP.

@gopalcse1

5 жыл бұрын

@@rajeshprasad101 Sir I gone through many NPTEL lectures.Your presentation , delivery keeping in mind targeted audience(students) and finally your response that brought you many fans like me. thank you sir I finished 75 videos of yours. And that topic wise small length videos brought more interest.

@staycalmandgetsuccess8743

4 жыл бұрын

@@rajeshprasad101 every time i understand everything and in interview i explain everything to them but i dont know why they say everytime "we are not satisfied by your answer"😕

Why is it significant to mention CCP structure of in both?

@mamidisssnmsatwick3982

3 жыл бұрын

So that we can say it is substitutional solid solution acc to humerothery rules

Any Nandi Sir student here

When you notice the equilibrium spelling being editted xD

Sir note provided