29. Nuclear Materials Science Continued

MIT 22.01 Introduction to Nuclear Engineering and Ionizing Radiation, Fall 2016
Instructor: Michael Short

The lecture on nuclear materials and reactor materials is continued, linking the material properties we learned by watching the Finnish hydraulic press with the defects created by radiation damage. Key measures of reactor material health are discussed, from ductility, to ductile to brittle transition temperature (DBTT), to radiation-accelerated corrosion via radiolysis and elemental segregation are shown. Prof. Short introduces a technically riskier part of his research, aimed at directly measuring the stored energy of radiation defects as a better quantifier of material damage.

License: Creative Commons BY-NC-SA

[cherrymarriedindiscord]

I'm not gonna pretend I understood everything... I'll just keep coming back

[davidschaftenaar]

Dr. Short has a certain trace amount of snark in his lectures that I find very enjoyable. It in no way affects the factual accuracy or completeness of his lectures, but rather contributes to making those listening care passionately about what he's teaching. And it does so much more effectively than mere uncritical positivity would.

[jacobjohn]

Michael Short's description of his reasearch @ 47:05 puts into perspective the importance of organizations like MIT. These organizations support individuals like Dr. Michael Short to measure things that most people are not aware of the existence, let alone importance. I am so grateful this is shared for free, thank you.

[evenightmare]

I’m watching him while eating or baking/cooking a lot. It’s explained so good that i can do something else while knowing more stuff.
My old teacher in high school frustrated me so much that i decided to quit applying to German technology colleges & became a ICU nurse later.

Now i’m applying to colleagues again in this field thanks to the professor in this video.

[ehfik]

that videosnip of the vacancy diffusion is incredible!

[pablogracia]

Again, brutal lecture. Amazing explanations by Michael Short. Thank you.

[harrynking]

Dr. Michael Short's lectures are unrivalled, in my view. Seeing them makes me want to go back to Imperial College, where I studied for a masters in nuclear engineering.

[nathanielthomas]

Incredible videos, I knew we had pictures, but I didn't know that we had videos of these phenomena as well!

[felipegarcia]

Beautiful Class. Greetings from a Materials Engineering student at the Federal Rural University of Rio de Janeiro

[goldibollocks]

I had no idea of or interest in nuclear energy before. Then I found the lecture on Tschernobyl (no. 26?) and I can’t stop watching since.

[michaelknight]

What an utterly brilliant introduction.

[brainstormingsharing]

Absolutely well done and definitely keep it up!!! 👍👍👍👍👍

[rui]

That's why Mr. Short is a Professor at MIT

[MarriageArezou]

If we run out of a Charpy test sample, could we correlate an NDT test to a destructive Charpy test and perform an NDT test on the vessel? Something like the NDT hardness test?

[davidschaftenaar]

I've heard that cold welding works because low temperatures can cause atoms not fully integrated into a crystal lattice (so those along surfaces for example) to "wander" from their bonded place and then resettle into a new lattice configuration once heated back up to room temperature. Could you use that process to fix radiation damage to reactor containment vessels?

[colinpitrat]

31:45 I don't quite get why the crystal plane is always 45° to the direction in which we push/pull. If piece of metal had been rotated by 45° before being manufactured, it would still deform the same way, right?

[greatraven]

What would happen if you were to put hardened (rolled) steel, or aerogel into a highly radioactive area?

[jacobjohn]

Where can someone find a paper that includes the efficiency plots shown in 48:27? Have been trying to find a good source for this for a long time!

[SecretWebiste]

Maybe it's just me but... Buster Bluth?

[daleglass]

A random thought:

Jet engine blades are made from single crystals. Airplanes fly in a slightly more radioactive environment. Does there exist a possibility of an engine blade being damaged by the background radiation?