Examples of steel microstructures using a TTT diagram

Ғылым және технология

Here we show a variety of different steel microstructure outcomes depending on different TTT diagram heat treatments.

Пікірлер: 124

  • @MaggieScott
    @MaggieScott3 жыл бұрын

    For G, why don't we take into account the first jab out into the 100% pearlite region? Does the reset just cancel out all that original pearlite?

  • @TaylorSparks

    @TaylorSparks

    3 жыл бұрын

    oh shoot, I just looked at it again and I totally missed that. I will have to re-record this video I think period thank you for catching it it would be 100% pearlite.

  • @davidharris7859

    @davidharris7859

    2 жыл бұрын

    Thanks for this question

  • @daweedcito

    @daweedcito

    2 жыл бұрын

    @@TaylorSparks thanx!

  • @sasibala1954

    @sasibala1954

    2 жыл бұрын

    xactly had this question on my mind . Thnz for pointing to and taylor thnz for answering

  • @sandisomatu1131

    @sandisomatu1131

    11 ай бұрын

    Soooooo was this fixed is there another video out?

  • @danielstewart3507
    @danielstewart3507 Жыл бұрын

    I sat through 4 hours of Mat Sci lectures and had no idea what was going on. You demonstrated everything I needed to know in 6 minutes. This is fantastic content. Thank you!

  • @TaylorSparks

    @TaylorSparks

    Жыл бұрын

    That makes me so happy to hear it. Let me know if there is other content that you need clarifying.

  • @juangloyamancilla9765
    @juangloyamancilla97653 жыл бұрын

    The passion you have for Materials Science and Engineering and Physics is clearly evident on every single vídeo you upload. I found all these very useful even though I am a Materials Engineer and MSc. You have explained a lot of things I tought I understood. Great work you are doing!!! Greetings from Mexico.

  • @TaylorSparks

    @TaylorSparks

    3 жыл бұрын

    Dude! This is so nice of you to say! Y buena suerte a vos en México!

  • @benergy84
    @benergy849 ай бұрын

    you are a genius man... explained in 2 min... really hats off

  • @JoshTaylor-xw5jg
    @JoshTaylor-xw5jg4 ай бұрын

    This is amazing. I learned more from your videos studying before finals than I did during an entire semester of classes.

  • @TaylorSparks

    @TaylorSparks

    4 ай бұрын

    So glad to hear it!!

  • @vichs8457
    @vichs84574 ай бұрын

    wow this was incredible. I missed my classes and couldnt understand anything from the powerpoint but now that i see this everything makes sense. thanks!

  • @pv10t
    @pv10t2 жыл бұрын

    Wonderful explanation! Youre better than my prof :) Thank you!!

  • @huseyinerduran6303
    @huseyinerduran6303 Жыл бұрын

    Your explanation is great. Thank you soo much

  • @swoyaman4969
    @swoyaman4969 Жыл бұрын

    Thank you sir truly insightful

  • @eliasjanssens1247
    @eliasjanssens12472 жыл бұрын

    all these videos are really helping me to understand the material, thank u very much!

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    So glad to help!! Do me a favor and check out our podcast Materialism! It's the best materials science podcast. We would love to get a few more iTunes reviews so that others could discover it!

  • @eliasjanssens1247

    @eliasjanssens1247

    2 жыл бұрын

    @@TaylorSparks I’m in my exam period right now, but material silence was (surprisingly) one of the courses I’m really interested in. So after, I will definitely check it out!

  • @AryanBhole563
    @AryanBhole563 Жыл бұрын

    This was really helpful thank you sir!

  • @shadab_196
    @shadab_196 Жыл бұрын

    so clearly ....amazing .....great thanks ...

  • @LukeK813
    @LukeK813 Жыл бұрын

    Thanks Taylor!

  • @akosvarga3946
    @akosvarga39463 жыл бұрын

    it was super useful, the only clear explanation I found online

  • @TaylorSparks

    @TaylorSparks

    3 жыл бұрын

    super glad to help!

  • @JonathanDuke-xw7yu
    @JonathanDuke-xw7yuАй бұрын

    Great video!!

  • @dzulkarnaenmohdkamal441
    @dzulkarnaenmohdkamal4412 жыл бұрын

    Damn, this video is really helpful than my lecture notes 🤩

  • @jeeza742
    @jeeza74210 ай бұрын

    Really helped. Thanks a lot!!

  • @johnnyluna8341
    @johnnyluna83414 күн бұрын

    Thank you so much!! Awesome videos :)

  • @sbusisorodney1256
    @sbusisorodney125611 ай бұрын

    WELL EXPLAINED THANKS

  • @christalbot8106
    @christalbot81063 жыл бұрын

    Great explanation. Thanks for making this video @TaylorSparks

  • @TaylorSparks

    @TaylorSparks

    3 жыл бұрын

    Super glad to help

  • @user-yj9uc8wx1k
    @user-yj9uc8wx1k5 ай бұрын

    you are the materials science goat i love you

  • @erensimsek3665
    @erensimsek3665 Жыл бұрын

    Thanks for the video :)

  • @vencentjansen8467
    @vencentjansen84672 жыл бұрын

    thank you for your efforts I have a question on the value of g It would be 100% pearlite true?

  • @muammerbali1580
    @muammerbali15803 жыл бұрын

    Thank you my friend

  • @Emma-dd1fc
    @Emma-dd1fc2 жыл бұрын

    You're a lifesaver! My exam is tomorrow. Thank you so much!

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    Hey, it's my pleasure! Do me a favor and like, share, and subscribe so I can keep making great material science content! By the way, we have a podcast Materialism that you might dig.

  • @binbinchen9628
    @binbinchen96283 жыл бұрын

    That's very useful for my coursework. Thank you!

  • @anjaliyadav7917
    @anjaliyadav79172 жыл бұрын

    That's really helpful to me 👍👍

  • @thedarkknight9032
    @thedarkknight90329 ай бұрын

    Got an A- in my Materials Engineering course. Thanks a lot for these videos : )

  • @phenomenal821

    @phenomenal821

    9 ай бұрын

    Congratulations 👏🎉🎉. What University do you attend?

  • @codyjohnson6575
    @codyjohnson6575 Жыл бұрын

    You make the best MSE content out there FYI

  • @TaylorSparks

    @TaylorSparks

    Жыл бұрын

    💪🏻💪🏻💪🏻

  • @tahy59
    @tahy59 Жыл бұрын

    Amazing thank you brother

  • @aszk8009
    @aszk80092 жыл бұрын

    Hello, I have a question! If the TTT diagram (for the hypoeutectoid area) has the start of the pearlite transformation at t0=0sec, 730oC & the start of the ferrite transformation at t0=0sec, 610oC, after cooling instantly from 900oC to room temperature, does it form pearlite + ferrite or martensite ?

  • @raghulraghavendra
    @raghulraghavendra5 ай бұрын

    It was really great...

  • @julieg1767
    @julieg1767 Жыл бұрын

    Sir thank you, you are a life saver!!!!

  • @TaylorSparks

    @TaylorSparks

    Жыл бұрын

    Glad to help!

  • @rob297
    @rob2972 жыл бұрын

    I'm from Italy, you are great, thanks

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    Woohoo! It's so cool to see this channel helping people all around the globe!

  • @301fishing4
    @301fishing4 Жыл бұрын

    Thank you!

  • @yossefsorail3042
    @yossefsorail3042 Жыл бұрын

    Very helpful video! but I had one question regarding the last problem that was solved. How is it tempered martensite when the martensite is heated beyond the low critical temperature? Isn't tempering lower than that temperature but higher than recrystallization?

  • @demscout
    @demscout6 күн бұрын

    Thanks a lot!

  • @thomasvancil5831
    @thomasvancil58314 ай бұрын

    Really helped solidify the concepts for my mechanics and materials final exam tomorrow.

  • @TaylorSparks

    @TaylorSparks

    4 ай бұрын

    Oh good luck! For what it's worth, I held a final exam review two or three nights ago and posted the video. There's probably quite a bit of overlap. kzread.info8SQcuM1qea0?feature=share

  • @Africa96tv
    @Africa96tv Жыл бұрын

    Thanks so much .its now fine.

  • @mangeram2731
    @mangeram2731 Жыл бұрын

    Great thanks Sir

  • @ritesha8050
    @ritesha8050 Жыл бұрын

    thanks a lot.

  • @leocofra
    @leocofra Жыл бұрын

    Very useful

  • @tcutoast1
    @tcutoast1 Жыл бұрын

    u saved my life

  • @alexandrapeirounaki6268
    @alexandrapeirounaki62683 ай бұрын

    Thank you

  • @Enesus35
    @Enesus353 ай бұрын

    thx a lot,

  • @samibasha
    @samibasha2 жыл бұрын

    it was very useful

  • @chameenekanayaka736
    @chameenekanayaka7364 ай бұрын

    great🙌👌

  • @basiceng8968
    @basiceng89682 жыл бұрын

    You amazing, thanks. :)

  • @stevensalaheddine3752
    @stevensalaheddine37522 жыл бұрын

    I believe it should be 100% pearlite for (g), Besides that great video!

  • @mmm-im2bu

    @mmm-im2bu

    2 жыл бұрын

    right? i think so as well

  • @MotivationsL1fe
    @MotivationsL1fe Жыл бұрын

    hello sir, what if i want make 10%cementite ?? and also i want get 12% Ferrite + 30% austenite

  • @justinbreau4623
    @justinbreau46233 жыл бұрын

    Great video, I feel like I'm finally understanding Materials:) I was was just wondering if instead of quenching off the start, if you used 'normalizing' for some period of time to the same points you did in this video would all the answers remain the same?

  • @TaylorSparks

    @TaylorSparks

    3 жыл бұрын

    What exactly do you mean by normalizing? I'm not sure I follow.

  • @justinbreau4623

    @justinbreau4623

    3 жыл бұрын

    @@TaylorSparks I'm doing a lab and they're referring to normalizing as a slower cooling method, it almost looks like continuous cooling curve, and for example, the curve goes from 800 degrees to roughly 550 for the 'normalizing' stage. Does that make sense? The word is also throwing me off haha, thanks in advance!

  • @TaylorSparks

    @TaylorSparks

    3 жыл бұрын

    @@justinbreau4623 okay, in that case you would need to use a different diagram. I've got a separate video on continuous cooling diagrams. I don't have as many worked examples though, unfortunately.

  • @justinbreau4623

    @justinbreau4623

    3 жыл бұрын

    @@TaylorSparks Ahh gotcha, thank you so much! I'm going to go watch that video, this was beyond helpful! Really appreciate it!

  • @Sibasish07

    @Sibasish07

    2 жыл бұрын

    @@TaylorSparks hello, I had a question, if I formed 50 percent bainite and then quench it to form 50 percent martensite, will bainite still be at the grain boundary? Because undercooking is high so it shouldn’t right?

  • @Melisaakcm
    @Melisaakcm Жыл бұрын

    First of all, thank you very much for your precise, informative videos. My question is while you were reading the TTT diagrams and determining transformation percentage, how is it possible for C to go back in time? I had some confusion understanding that backward move. Thanks again.

  • @suheladesilva2933

    @suheladesilva2933

    Жыл бұрын

    Yes, I too have that issue, could you please explain it. Thanks in advance. P.S. great video by the way.

  • @danieldetorresrengifo4490

    @danieldetorresrengifo4490

    Жыл бұрын

    I think they just re start the process at a different temperature. For example, in g you get 100% pearlite and then you take that 100to 350 and start to cool down again, but as it is 100 pearlite you Don have more austenite to transform. But its like taking the material all over again to the beginning, like you do a second heat treatment at a different temperature

  • @MessivsCR7fan252
    @MessivsCR7fan25211 ай бұрын

    In part c why we don't have 50% P and 50% bainite?

  • @raf.4028
    @raf.4028Ай бұрын

    theres something i dont get, specifically for a. When we quench a down into martensitic temperature, it appears to cross the pearlite 100% line vertically. does this not count/is this disregarded if we are talking about quenching?

  • @TaylorSparks

    @TaylorSparks

    Ай бұрын

    Correct

  • @diyasen6872
    @diyasen68723 жыл бұрын

    i didn't get the g part :( Do we ignore the pearlite formation?

  • @raider2442

    @raider2442

    2 жыл бұрын

    Nah if you check the comments he says he accidently missed the top part. Should be 100% pearlite.

  • @raghavjuyalcomedydancedeew636
    @raghavjuyalcomedydancedeew636 Жыл бұрын

    Awesome❤️ *G would be 100% pearlite

  • @lchen1386
    @lchen1386 Жыл бұрын

    I have question, if cooling line enter cross the pearlite start line but leave cross the banite finish line. What would it be? The 100% banite or some pearlite+ banite?

  • @TaylorSparks

    @TaylorSparks

    Жыл бұрын

    Like a diagonal line? Yes you'll get kix.

  • @lchen1386

    @lchen1386

    Жыл бұрын

    ​@@TaylorSparks Thank you. Yes, like the diagnal line.

  • @basiceng8968
    @basiceng89682 жыл бұрын

    Wish i could give you a million likes

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    Yeyeye!

  • @adorbjune96
    @adorbjune96 Жыл бұрын

    What do you mean reset, for example in C, that the line goes back. What would be the process to reset it?

  • @JustChannelNoMore

    @JustChannelNoMore

    Жыл бұрын

    I didn't get that either. Have you found an explanation to that?

  • @adorbjune96

    @adorbjune96

    Жыл бұрын

    @@JustChannelNoMore nope, i am still wondering.

  • @jordantotenhofer1791

    @jordantotenhofer1791

    Жыл бұрын

    After cooling to a certain temperature, you hold it at that temperature instead of letting it cool completely. Its usually put in a furnace of the reset temperature and held there until the entire material is at that temp.

  • @Sibasish07
    @Sibasish072 жыл бұрын

    Hello, is it possible to turn upper bainite to lower bainite by quenching it?

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    No. If you quench it it will preserve the structure. If you want lower bainite you need to lower the temperature a little bit and hold it in the lower bainite region

  • @Sibasish07

    @Sibasish07

    2 жыл бұрын

    @@TaylorSparks oh cheers this is what i was looking for. Thanksss!!

  • @Sibasish07
    @Sibasish072 жыл бұрын

    Hi, our professor told that we never form 100 percent martensite but about 90 percent and the rest 10 percent austenitic steel. Is it correct?

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    I actually don't know!!

  • @Sibasish07

    @Sibasish07

    2 жыл бұрын

    @@TaylorSparks I actually asked him, it only happens when we add austenizing element. Thanks btw for the video

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    @@Sibasish07 thank you!

  • @Sibasish07

    @Sibasish07

    2 жыл бұрын

    @@TaylorSparks hello sorry to disturb you again, but can you make some exercises on hypoeutectoid ttt diagram or hypereutectoid ttt diagram? Thankss

  • @deruvish2300

    @deruvish2300

    Жыл бұрын

    @@Sibasish07 makes perfect sense but also I think we might have to go cryogenic temperatures in order to have %100 martensite. If I am not mistaken our professor had explained said phonemena this way!

  • @thestealthystarfish8584
    @thestealthystarfish8584 Жыл бұрын

    ur a god

  • @TaylorSparks

    @TaylorSparks

    Жыл бұрын

    Lol, thanks. Check my channel out. Loads of MSE stuff in different playlists

  • @allez2015
    @allez20153 ай бұрын

    You lost me on the "reset" part on C. What do you mean by "reset"? Why does the time line go backwards instead of straight down?

  • @GB-eq4db
    @GB-eq4db3 ай бұрын

    you are a fucking legend

  • @TaylorSparks

    @TaylorSparks

    3 ай бұрын

    🏅🏅🏅🫢

  • @ceptonte
    @ceptonte3 ай бұрын

    You're saving my ass, haha

  • @TaylorSparks

    @TaylorSparks

    3 ай бұрын

    I gotchu homie

  • @betinhocr
    @betinhocr2 жыл бұрын

    Pena não ter em português 😟

  • @TaylorSparks

    @TaylorSparks

    2 жыл бұрын

    Pena! En español podría

  • @JustChannelNoMore
    @JustChannelNoMore Жыл бұрын

    what's "resetting"?

  • @TaylorSparks

    @TaylorSparks

    Жыл бұрын

    We take time back to zero

  • @JustChannelNoMore

    @JustChannelNoMore

    Жыл бұрын

    @@TaylorSparks but why? if we cool it further, then the function has to move to the right, not to the left, am I correct? Or at least straight downwards. I don't get it how can we just reset the time

  • @ADaMon02

    @ADaMon02

    Жыл бұрын

    @@TaylorSparks do you mind explaining this one a bit more? Had the same problem

  • @mincraftpe2951
    @mincraftpe29512 жыл бұрын

    Second example not explained well !

  • @mamun7891
    @mamun78916 ай бұрын

    nice exercise but plz look for G...it is already converted to 100% Pearlite!!!

  • @TaylorSparks

    @TaylorSparks

    6 ай бұрын

    You are right!!

  • @nadernofal7087
    @nadernofal70872 жыл бұрын

    Wrong G answer

  • @jakemayb2184
    @jakemayb21842 жыл бұрын

    Me being 11*Yeah but... what?*

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