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<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>
Reģistrācijas numurs (WIID)
80882
Darbības sfēra
<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>
