Investigation of planar anisotropy evolution in aluminium alloy sheets under hot stamping conditions using digital image correlation

Open Access

Table 3

Material constants for r-value evolution with increasing ε_x of AA6082.

A₁ for S₂	A₁ for S₄	B₁	n₁	n₂ for S₂
190	204	5.66	8.4	2.52E-2
n₂ for S₄	Q(J/mol)	R(J/(mol⋅k))	${\dot{ε}}_{r} (s^{- 1})$
2.82E-2	4800	8.314	1

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