ISO 10275:2007 specifies a method for determining the tensile strain hardening exponent of flat products (sheet and strip) made of metallic materials. The method is valid only for that part of the stress-strain curve in the plastic range where the curve is continuous and monotonic.
ISO 10275:2007 specifies a method for determining the tensile strain hardening exponent of flat products (sheet and strip) made of metallic materials.
The method is valid only for that part of the stress-strain curve in the plastic range where the curve is continuous and monotonic.
Le présent document définit une méthode de détermination du coefficient d'écrouissage, n, des tôles en acier caractérisant la ductilité du métal et son aptitude à répartir la déformation.
<p>This document specifies a method for determining the tensile strain hardening exponent <i>n</i> of flat products (sheet and strip) made of metallic materials.</p> <p>The method is valid only for that part of the stress-strain curve in the plastic range where the curve is continuous and monotonic (see 8.4).</p> <p>In the case of materials with a serrated stress-strain curve in the work hardening range (materials which show the Portevin-Le Chatelier effect, e.g. AlMg-alloys), the automatic determination (linear regression of the logarithm true stress vs. the logarithm true plastic strain, see 8.7) is used to give reproducible results.</p>
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