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Tyler C.
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 Posted: Tue 28 Jul, 2020 12:53 pm Post subject: |
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| Paul Hansen wrote: | The problem I was thinking about was if the core exceeds the yield strength while the surface is still elastic. I think in that case, the sword would still take a bend.
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Yes you are absolutely right. If any part of the blade exceeds the local yield strength it will take a set. The yielded areas will prevent the unyielded areas from returning to their original shape and there will therefore also be some residual stresses.
| Paul Hansen wrote: |
Also I think calculating sword strength is a bit complicated if we consider pattern welding and welded-on steel edges, as well as hardening thickness. |
I agree. The complexity is just too high to get exact numbers and there's not really much point in it anyway. But, if you wanted, you could at least get a good idea of what hardening thickness you would need so that the soft core will not affect performance. I'm guessing you would not need a very tick hardened layer to do all the heavy lifting.
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This is a standard topic
