Muddiest Points: Dislocations and Plastic Deformation of Metals

This video contains the explanation of students' muddiest points regarding plastic deformation of metals including slip planes/directions, and dislocations.
To study the vocabulary used in this video, visit this site:
quizlet.com/MatSciASU
We're also at:
www.slideshare.net/mseasuslides
This work was supported by NSF Grants #0836041 and #1226325.

[@Nina-br8by]

i really appreciate all these videos, really beats our lecturer any day

[@Jameshf007]

Excellent video. Very well presented with clear diagrams. Thanks!

[@marcusgelder7145]

Thank you for this clear video!

[@zjason7582]

Excellent video, thank you very much!

[@hosseinderakhshandeh8071]

Beside your good teaching, your voice is very nice!

[@jaylenjames322]

Thank you for this!

[@manuelsanchez9782]

Very helpful, thank you.

[@timonserrano3198]

Really good review

[@satwantsingh9627]

Amazing..............your voice and reading skils made me watch this entire video...!!!

[@satwantsingh9627]

you just sound like dakota johnson

[@saoussenbelghith7051]

excellent! thank you

[@Littlefa3]

Could you please make a video about fatigue and torsion testing or just about torsional fatigue

[@nomipakistanli]

someone please give this woman a glass of water. PLEASE!!

[@ROHITKUMAR-zw2nc]

thankyou u are good

[@guoyu1897]

I love your voice omg

[@abdullahceylan1857]

Hello, very nicely presented explanations..i have one point though, during bcc slip plane explanations the way you have placed x', y', z' are wrong..either z' is to be reversed or x' and y' are to be switched..

[@harshbhakta2984]

please explain slip system along HCP crystal structure.

[@niharvete9667]

Excellent video, very helpful! As far as I know, proportional limit and yield strength are not the same. May want to check that tho.

[@arcantos560]

Great explanation much better than my professor lol

[@ericksin6134]

Quick question: At 8:00 mins, if the bonds are stronger and closely packed, doesn't that make it harder to break the bonds and easier to re-form rather than easy to break and easy to re-form?

[@zzztttsss]

It makes it harder to break the bonds yes but that should only inform how you're conceptualizing activation energy not dislocation motion.

[@ahmednouh9347]

finally,i miss you from the last video 😂

[@azeddinechaibe2385]

Can i find some explication about alexander and hassan model in your chanel

[@kleinsontan3813]

May i know how you determine the origin ?

[@speedyvedo99]

Wait can slip system answers vary based on what we chose as our orgin?

[@tanyafaltens5967]

That should not matter.

[@xiongjiacheng7813]

I like your voice

[@unlovableghost]

Very well explained, thank you! I'm not sure why there isn't a slip plane that is (-1 -1 -1) or (-1 1 -1) etc, does anyone know? :)

[@tanyafaltens5967]

These additional planes in the {111} family of planes can be slip planes if there is some component of resolved shear stress that will move that particular plane. You must look at the direction that the planes would slip and the direction of the applied stress and how these are oriented with respect to the plane that you are considering as a potential slip plane.

[@marwanadel__]

@@tanyafaltens5967 but why aren't they counted with the other slip planes?? she says in the video that there are 4 planes !!!

[@tanyafaltens5967]

@@marwanadel__ You need to look at the complete slip system - specific sets of planes that are associated with a direction of applied stress. (111) is the same as (-1-1-1) , you will see if you draw out the planes. If the plane is perpendicular to or parallel to the direction of applied stress, then it is not a part of the slip system. You need to have a component of resolved shear stress in the plane.

[@marwanadel__]

@@tanyafaltens5967 now i get it..thanks for your heed!

[@detu9134]

so hard broo , harddd

[@jengerp]

Who else wishes to see the face of the person behind this.

[@johncantor1639]

why no videos since 7 years ?

[@rookiemvp2008]

All of MSE 250 is a muddiest point.

[@PsyCodeqz]

get a desser for your videos yet? i sure hope so

[@atulkishan3752]

You sound very close to Jenna Fischer

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[@guptaji8239]

Lol

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[@harshbhakta2984]

please explain slip system along HCP crystal structure.