Abstract��The effect of different tensile control model on strain hardening exponent(n-value) was analyzed on the basis of Hollomon formula. The effect of tensile rate on n-value was also discussed by simple tensile test. It is indicated that from the study: 1)the strain hardening exponent is not a constant but a variable being relevant with the control model; 2) Since plastic deformation of polycrystalline metal is time-dependent, the n-value decreases with increasing the tensile rate . 3) It is suggested to use the strain rate control model at tensile step of uniform plastic deformation. As the tensile test is static loading test, it��s more close to the true value for low tensile rate.
̷���. Ӧ��Ӳ��ָ��(nֵ)���������ģʽ���������ʹ�ϵ��̽��[J]. �й������ڿ���, 2010, 28(6): 12-12.
TAN Hong-Feng. Discussion of the effect of tensile control model and tensile rate on strain hardening exponent (n-value). Chinese Journal of Iron and Steel, 2010, 28(6): 12-12.
2010, Vol. 28 
