Examples of steel microstructures using a TTT diagram

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

[MaggieScott]

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?

[danielstewart]

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!

[juangloyamancilla]

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.

[JoshTaylor-xwjg]

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

[benergy]

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

[xxj]

Thank you for helping me pass the metallurgy class.

[Emma-ddfc]

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

[thomasvancil]

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

[vencentjansen]

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

[thedarkknight]

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

[vichs]

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!

[eliasjanssens]

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

[codyjohnson]

You make the best MSE content out there FYI

[barosnb]

That is what I was looking for, thanks so much!!

[yossefsorail]

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?

[akosvarga]

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

[Melisaakcm]

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.

[justinbreau]

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?

[huseyinerduran]

Your explanation is great. Thank you soo much

[stevensalaheddine]

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