17-4 elongation, what do I need for 45000 rpm?
17-4 elongation, what do I need for 45000 rpm?
(OP)
elongation should have been 12% came out 10%
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17-4 elongation, what do I need for 45000 rpm?
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RE: 17-4 elongation, what do I need for 45000 rpm?
You really are going to have to give us more information. To convert that rotational velocity to a load requires mass. (and probably some other things, mechanics is not my strong suit) To figure out if the extra 2% elongation before break is detrimental to your application is much more complex. What were the yeild and tensile strengths? Those are much more important under normal conditions than elong. @ Break. What condition is the material in? What is the specification for the material and condition?
There are many other hunchbacks (?) I could give you, It just depends on which soldiers (!) you're looking for.
Nick
I love materials science!
RE: 17-4 elongation, what do I need for 45000 rpm?
RE: 17-4 elongation, what do I need for 45000 rpm?
Operational life ~~45min.
Can not redo to correct properties, use or loose it.
RE: 17-4 elongation, what do I need for 45000 rpm?
In your case, it looks like the yield strength is way above the minimum specified and assuming that the operating stress is based on the yield stress and that you carefully inspect the part prior to use for any flaws I believe it will be OK.
RE: 17-4 elongation, what do I need for 45000 rpm?
Use full sized bars?
From center, mid-radius, or near edge?
Tried testing at various strain rates?
Why can't you re-do? It looks like this might benifit from a little overaging. A bit of time at a higher temp may help.
I don't like the very close UTS/yield. This is not good for fatigue and cracking.
Is there any historical data on impact or DCB crack testing?
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: 17-4 elongation, what do I need for 45000 rpm?