摘要
Three characteristic points in the deformation history of a fractured tensile specimen are selected tocalculate two values of n( n1 and n2 ) to represent the hardening ability of material during the homogeneous plas-tic deformation and the following large plastic deformation. Experimental results obtained with mild streel andred copper show that n determined using the three-point method proposed is better to describe the hardening a-bility of material. It is therefore concluded that three-point method can be used to describe the hardening prop-erty of material during both homogeneous deformation and large plastic deformation.
Three characteristic points in the deformation history of a fractured tensile specimen are selected to calculate two values of n(n_1 and n_2 ) to represent the hardening ability of material during the homogeneous plastic deformation and the following large plastic deformation. Experimental results obtained with mild streel and red copper show that n determined using the three-point method proposed is better to describe the hardening ability of material. It is therefore concluded that three-point method can be used to describe the hardening property of material during both homogeneous deformation and large plastic deformation.
