Watch the video and look at the lesson plan from Pacific Northwest National Laboratory!
New Lessons to Try
Thermal Expansion
Be sure to check these lesson plans out about thermal expansion.
Growing Crystals
See these websites if interested in various recipes and techniques for growing crystals!
http://www.waynesthisandthat.com/crystals.htm
Crystal Defects and Motion Delocation
Check out these resources about crystal defects and the TEK8 Design challenge!
TEK 8:
Presentation: https://osu.app.box.com/v/TEK8DesignChallenges -> 2015 TEK8 -> “Dislocations and Material Deformation.pptx”
Videos: https://osu.app.box.com/v/TEK8DesignChallenges -> 2015 TEK8 -> “Dislocation Motion -Telling the Story.mp4” and “Dislocation Motion -Design Challenge Video.mp4”
History of Materials Science
Ever wondered about the history of materials science? Well, check these links out!
“Why the story of materials is really the story of civilisation” by Mark Miodownik article
The Activity Series
Along with the video above, here’s some resources about the activity series from TEDEd!
Nitinol Resources
Check out these resources nitinol and its fascinating properties!
Polyurethane Resources
Steel, Aluminum, and why tiny little precipitates can make metals stronger:
If you were lucky enough to be at the Tolles Materials Science day on Saturday 5/6, you got to hear Dr. Tom Glasgow and Dr. Glenn Daehn give a presentation on supersaturation, Steel, and Aluminum.
One of the takeaways from this was the usefulness of precipitates in strengthening materials. To make a material stronger, you want to make it harder for dislocations to move through the metal. In the bobby pin experiment, you show that a water quench will create a strong and brittle steel. This is because the steel forms martensite, which is a particular structure of Fe & C that dislocations have a hard time moving through.
Here is a video of martensite forming in steel during a quench:
Tom also mentioned that we form martensite in order to temper it (martensite is brittle, after all, and we don’t want our metals to be brittle). When we heat it up, we allow the steel to change back to its equilibrium and ductile body-centereed-cubic structure with very small hard carbides throughout. This is actually how aluminum is strengthened as well. Watch Mark Midownik talk about that here:
