Materials (Part 2: Carbon Steel Crystal Structure)

One of the hidden requirements of an #engineer is to know which material is appropriate for which application. The selection of the wrong type of #steel can be detrimental to your design as well as greatly impact your #manufacturing processes (#welding, #forming, #stamping). In this video we discuss the crystal structure of #carbon #steel and how this impacts the various applications of steel.
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[@infinitymfg5397]

For other videos on engineering and manufacturing: GD&T: kzbin.info/www/bejne/g2HFh4uOor2Lmqs Strength of materials: kzbin.info/www/bejne/jWbGp5yCpNyNZ7c Metal Casting: kzbin.info/www/bejne/l5nUoqB5m6Z0adk Automation: kzbin.info/www/bejne/gXy6hqt3n92rasU Kinematics: kzbin.info/www/bejne/lXq2iHWlaad_mbs Design: kzbin.info/www/bejne/aJLHnn9qhtZqq9U Calculus: kzbin.info/www/bejne/pKmuk6qJlLaCntk

[@dankuchar6821]

Thank-you for this content. Excellent!

[@jdepew]

This series is EXACTLY what I need! I machine aluminum on a daily basis, and want to get into steels, but lack an understanding of the material science and processes. Thank you for putting together these well thought out videos!

[@infinitymfg5397]

Thanks for supporting the channel Jack!

[@sergefighter6607]

2.30. This structure is very similar to the polygonal Peruvian masonry. Delightful!

[@infinitymfg5397]

I didn't know what this was and I had to google it. You're right! :)

[@nomipakistanli]

best video ever. what does it have whcih other videos dont? 1. you dont jump to phase diagram and start with the terms. 2. slowly build the knowledge based on the strength and capacity of each cubic structure. best video i have ever watched. and i watched many... i understood about diffusion. capacity to hold carbon atoms as solution which is need for diffusion. very good.

[@infinitymfg5397]

Thanks! I really appreciate your feedback.

[@Zbroja69]

Nice vid thanks. However you confused iron with carbon several times, ie when you were talking about diffision. It is carbon that is diffusing, not iron.

[@mrmkl9839]

4:33 The transformation temperature and the Curie temperature are two different things. At room temperature you've got alpha-iron (ferrite) with body centered cubic lattice. When you go up to around 770 degrees you reached the Curie point, which is the temperature where a ferromagnetic material looses it's ferromagnetic behaviour and becomes paramagnetic. A long time ago metallurgist thought it was a phase transition and called it beta-iron, but soon they figured out it was not, and this is why we have alpha gamma and delta iron but not beta.

[@DescartesRenegade]

Wish you could've gone into the effect the cooling process has on grain size and grain boundaries :(

[@shrikantkusnurkar4695]

This is really awesome information.Thanks for this video.

[@aleksaorevic536]

Thanks much! Great videos keep it up!

[@rouadaghstani641]

This video is worth more than the tuition i paid for my materials and processes class in the whole semester. Thank you so much.

[@infinitymfg5397]

Thanks for watching.

[@prafullchandra8098]

Thank You.......Magnificent Work!!!

[@infinitymfg5397]

Thanks for watching!

[@michaelhopkins5823]

very helpful video. Thank you for your help!

[@MsGodisyou]

excellent and simple explanation. Thanks

[@infinitymfg5397]

Thanks for watching!

[@andrewnallayanw2357]

Great & lovely presentaion with all those pictures ..It was indeed crisp and precise sir....Thanks for this viseo...

[@Nobody-xg2un]

Excellent, thanks for simplifing a complicated subject that's important for me to understand in the welding industry.

[@infinitymfg5397]

Thanks for watching!

[@EllEnchanted]

Very good explanation, thank you!

[@infinitymfg5397]

Thanks! I'm glad that you liked it.

[@fitzbelgrave8580]

LUV these vids!!!

[@infinitymfg5397]

Thanks! Keep watching, there will be more to come!

[@mikeymishu]

Very good video, thanks for the information.

[@infinitymfg5397]

Thanks for watching and your feedback!!

[@pambudibaguswidodo9768]

Easy to understand. Thank you.

[@infinitymfg5397]

Thanks, I appreciate that. I always hope that these videos help people to get a better hold of some concepts.

[@jacksonminnear5928]

Very informative video with great easy to understand training, thanks.

[@infinitymfg5397]

Thanks for watching!

[@awcarvey]

Thank you much for these videos! Its wonderful to have a refresher resource from all the classes I took years ago. Constructive Input: Decrease the background music volume & change it from the bouncy up-beat to something more smooth. You have a wonderful mellifluous voice that I find calming and slows down my mind to be able to absorb all the information you are explaining to us (I love it and Thank you!). While background music can act as a 'glue' to keep viewers engaged, (as a metaphor) I think you should be aiming more towards background wallpaper that has an subtle glacial texture rather than the happy bunny bouncing through the sunny park. I feel a subtle glacial background track would compliment you voice and allow viewers to focus more on what you are saying and learn more. With the current background music, I found myself 'ba-da da da dah' -ing along to the tune, wondering when fluffy bunny would find his friend curious squirrel. You've taken great time creating amazing teaching material! Please don't muddy it with distracting music. Part 1 on this didn't have music, and I didn't miss it. Think about giving this lecture to a room full of students - would you bring in a speaker and play that background audio loop the entire lecture? There have been studies that 'noise' (white, brown) can help people focus. Think about ambient HVAC audio tracks :) Cause that is what I'd heard whenever my professors would pause. More input: When you pause talking, the background audio gets louder. I dislike this. From what I am hearing, the audio tracks are probably put through a gain-compressor so we can hear your voice clearly. Unfortunately, the way gain-compressors work, when you pause talking, they will gain the volume of the background music. I want to be focusing on your lecture, but whenever there is a pause, that distracting bunny comes hopping back into the foreground, shaking a balloon in front of my face when I want to be learning about this Awesome Engineering! To address this, put a gain-compressor on your audio track, and then mix in the background. You can then put a (non-gain) compressor after the mixing so you don't get digital clipping (cause from what I've seen & heard from your videos, you don't want that). While you may want to try out a few different types of audio, I find that tracks or audio that has sudden attacks (pings, tinks, or hits) to be distracting. Maybe something like this: kzbin.info/www/bejne/rn-xaJyKdppqoK8 (birds have a melody) kzbin.info/www/bejne/rIOmnmSHnb9goLM (one of my favorites) Though it may be too much like a warm heavy blanket and put people to sleep. That is my input, take it as you will. Thank you again =) I look forward to future videos!

[@infinitymfg5397]

Thanks for watching! This was great feedback. A lot of people aren't digging the music so I'll be dropping it in the future.

[@latinlover62]

this helped me a lot. thank you

[@infinitymfg5397]

Thanks for watching!

[@squidgy6930]

I do heat treatment using mats and transformers Also NDT Really informative this👍

[@anuranandalal3727]

very important for me

[@sreeram476]

great

[@ladegn5161]

Very nice. Good explanation of ferrite, austenite, and martensite. Just a minor criticism; you transposed iron and carbon a few times. An audio edit could fix that easily. Again, thanks!

[@infinitymfg5397]

Thanks for watching! Yeah, I was really out to lunch when doing this video. LOL!

[@davidsteele2729]

Thanks for the clear explanation. But at about time 2:35 forward, the Body Centered Cubic graphic shows only 8 atoms. Shouldn't there be 9? (1 in the center plus 1 at each of the 8 corners).

[@infinitymfg5397]

You're correct. One of the corners is missing. I never noticed that. Good catch!

[@axnbjsbdudbydvydubu9355]

so the die is made from which type ? and the blank is made from which type ?

[@lisalotravels]

Amazing video. Well explained. Thank you :) I guess the curie temperature is the eutectoid temperature?

[@er.anujkumar7027]

i love you mam

[@buthow_]

@@er.anujkumar7027 mission failed we'll get em next time :(

[@pambudibaguswidodo9768]

It would be great if you continue this topic with alloying element in steel, up to stainless and duplex SS. i hope it is not too much to ask :)

[@jackhodari8267]

Good content. I find the music a bit annoying though

[@haroldsimpson8422]

Professor it appears you are explaining the Heat Treat Process if so why arent you using Decalescent, and Recalescent points (My spelling may be off). Then again there is no Oil, Water, to actually capture and hold the grain structure so that the grains become permanently altered. I may be way off in my undrrstanding?

[@paweenPW]

4:40 - 7:33 7:35 - 9:33 9:35 - 11:30 11:33 - 13:25 13:30 - 15:45 15:48 - 16:51

[@edmusthaler9294]

Mixing terms iron and carbon

[@Mech.Masters]

From iron carbon diagram, we understand that austenitic structure in steel can be seen only at high temperature above 723 degree Celsius. Austenitic structure has FCC crystals and they allow carbon atom to be part of their crystal structure. This means that a steel has got good strength characteristics when the structure is Austenitic. But materials used in industries for different applications are used at room temperature. Then how is austenitic structure in steel useful to us when we cannot have a steel with austenitic crystal structure at room temperature.

[@slthbob]

It is an observed property dude... the threshold point for the creation of pearlite and martensite...

[@suleaybar464]

I wish to know your name to use as a reference.

[@infinitymfg5397]

You can always call me Professor Cummings or KZbin dude.

[@haroldsimpson8422]

Sorry about the original question I didn't watch the whole video before I ask the question. 🤣🤣🤣

[@leetquarter]

'austenite' not 'austinite'.

[@thomousdesouza5675]

Pure iron doesn't exist in nature,,, it is not free from carbon, so it is available at BCC Structure....... Friends don't be confused.

[@ScottieG59]

That soundtrack is extremely annoying and distracting. Also, please proof your videos and correct the times you mixed iron and carbon. Overall, I still like what you are trying to do here.

[@JonDingle]

Great video except for the irritating music!

[@infinitymfg5397]

LOL! Yes, future videos will be music free.

[@JonDingle]

@@infinitymfg5397 THANK YOU! I had to stop watching it because I wanted to hear you, I came to learn and got annoyed and left. I am grateful for you doing the videos and going music free, that is a great thing to do. I look forward to your music free videos! Top regards from the UK.

[@KULTvitka]

Just.... don't use Fahrenheit in science

[@VTPSTTU]

I can only stand hearing him say iron when he means carbon a certain number of times. He exceeded the limit, so I had to stop the video and click dislike.

[@MD-rd8vt]

Too many mistakes