Thank you University of Texas, class is for students without KZitem
@erasmo273
8 жыл бұрын
i was watching alien videos how did i get here lol
@juliosanchez1614
8 жыл бұрын
+erasmo hinojosa this is a education video for are materials class
@syedmahdi4934
8 жыл бұрын
It's usually the other way around
@wiixxxproducers
7 жыл бұрын
LOL LEARNING THIS AN HOUR BEFORE MY MATERIALS FINAL
@jyvan9386
7 жыл бұрын
wiixxxproducers same here
@ajonelag
7 жыл бұрын
LOL SAME fam
@katek5568
7 жыл бұрын
very well presented. thank you. x10000000 likes
@a7majed
8 жыл бұрын
I have a question.. @3:50 you said: "When you hit the Solidus line" describing the solidification process, although solidification starts when you hit the Liquidus line, it ends when you hit the Solidus line, doesn't it?
@melearn-utrgvley2252
8 жыл бұрын
When cooling from the molten state, solidification begins when you reach the liquidus line, continues as you cool through the two phase liquid-solid region and then finishes when you hit the solidus line. Note that these are equilibrium diagram temperatures so a practical cooling rate will not begin solidification at exactly the diagram indicated liquidus temperature (usually slightly lower) nor finish at the diagram indicated solidus temperature (again probably slightly lower). The slower you cool (that is the closer you keep the entire system to equilibrium) the closer the actual temperatures will be to the diagram values. If you cool really fast, some systems can achieve a super-cooled liquid state which will solidify rapidly once initiated. The King of Random has some nifty experiments you can do with super-cooled water: kzitem.info/news/bejne/1IeasqiqjpqQlWU - Dr. Jones
@lorenamonteiro6411
7 жыл бұрын
very helpful. thank ou
@waqasmuneer7951
7 жыл бұрын
Excellent presentation
@oscarjeans4119
7 жыл бұрын
This is a really good video! thank you very much :)
@2sunami
7 жыл бұрын
thanks for this very informative video,,, I have a question though what if I heated the alloy to 800 and then quenched it rapidly all the way to room temperature without holding seconds in between. Then what phases will I have?
@melearn-utrgvley2252
7 жыл бұрын
If it's 800C it's 100% Martensite. If it's 800F, then it would be considered a reheat.
@2sunami
7 жыл бұрын
thanks for your reply +MELearn UTRGV the question I am trying to solve is I am working with 2 steels 1045 and 1022 I am doing two experiments for both steels exp 1: heating to 900C and then quenching in oil heating to 900C and then quenching in water exp 2: heating to 800C and then quenching in oil heating to 800C and quenching in water assuming cooling rate for oil is 75C/sec and assuming cooling rate for water is 300C/sec. what phases will I have for them? thanks
@melearn-utrgvley2252
7 жыл бұрын
If you have your continuous cooling curves for both of these steels, you can email them at melearn.utrgv@gmail.com.
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