Abstract��The ��double��necking�� appeared in the tensile test for cold��rolled sheet St14 is explained in this article through the diffuse necking,based on localized necking theory of tensile test, combined with the appearance of the necking fracture in the specimen. The diffuse necking and localized necking in the tensile testing of sheet is proved through reseau strain analysis. It will be useful to nail down the necking mechanism of sheet elongation for determining and using the ductile parameters of deep��drawing sheet.
�Թ㶫;�｡;������. �������ְ嵥������ʧ�ȵ��о�[J]. �й������ڿ���, 2008, 26(6): 30-0.
ZHAO Guang��dong;SUN Jian;FANG Li��hong. Research on Uniaxial Tensile Necking of Cold��rolled Sheet. Chinese Journal of Iron and Steel, 2008, 26(6): 30-0.
2008, Vol. 26 
