"Everything You Always Wanted To Know About Martensite..." by the intrepid Mr. Cashen

Sam Salvati said:
Sounds right. The material has to go somewhere and it doesn't really crinkle or compress or expand, it just moves.
Click to expand...

The space to stretch and compress has to come from somewhere, right?

... If the inside radius upsets, it means it gets thicker and wider. If the outside radius stretches it must get thinner and narrower. I guess that's the only thing that makes sense geometrically.

It's amazing how the steel can store energy and release again when it springs back.
 
Slipping and sliding atoms, deformation of crystals, upsetting and stretching might explain a "bend".

... but how can the steel hold energy and release it again, if something isn't going on at the atomic level, when it springs?

It's probably a stupid question,... but we are still talking about martensite. :)
 
Why does it snap back?

Is Kevin saying that when the atoms pass the point of no return the stay put, and when they don't the applied force reveres when it is released and it snaps back to the original position?

... Or if the force is too much and pushes it too far it fractures?

Spring is much more interesting than bend. :D
 
Kevin,

The general rule is that the author of a work owns the copyright to it, in which case it's entirely fair for him to do whatever he wants with it, subject to the limits imposed by any licenses that he may grant to other parties. An exception to the general rule is a "work made for hire," a category into which your article might fall. Did you have a written contract with ABS to produce the article?
 
Hey Sam, which direction does the "negative space" come from, and why? Why does the negative space go back the way it came? LOL :D
 
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