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

Open Access

Fig. 4

Variation of the true strains, r-values and strain ratios with proceeding of deformation for specimen tested at the reference temperature of 500 °C and strain rate of 0.1 s⁻¹ (test condition 1A as shown in Tab. 1). The locations O to 6 and the regions S₁ to S₆ are shown in Figure 3a.

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