If two materials with different yield stress have similar FLD diagrams could we say that they can be formed similarly?
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Multiaxial forming behaviour in the plane of sheet metal will be similar with respect to necking and failure against cracking. Also, if the FLCs are similar, similar hardening behaviour could be assumed too - according to modeling approaches, e.g. Keeler.
However, different yield stress will also cause different springback, playing an important role in any geometrical application. Moreover, forming forces will be significantly different, du to different yield stresses and as UTS is not considered.
In such cases effect of Strain hardening constant( K raise to some power) also plays important role.
If the strain hardening constant is same then possibly it could be formed easily under similar conditions.
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