title: Description of full-range strain hardening behavior of steels.
abstract: Mathematical expression describing plastic behavior of steels allows the execution of parametric studies for many purposes. Various formulas have been developed to characterize stress strain curves of steels. However, most of those formulas failed to describe accurately the strain hardening behavior of steels in the full range which shows various distinct stages. For this purpose, a new formula is developed based on the well-known Ramberg-Osgood formula to describe the full range strain hardening behavior of steels. Test results of all the six types of steels show a three-stage strain hardening behavior. The proposed formula can describe such behavior accurately in the full range using a single expression. The parameters of the formula can be obtained directly and easily through linear regression analysis. Excellent agreements with the test data are observed for all the steels tested. Furthermore, other formulas such as Ludwigson formula, Gardner formula, UGent formula are also applied for comparison. Finally, the proposed formula is considered to have wide suitability and high accuracy for all the steels tested.
authors: Institute of Process Equipment, Zhejiang University, Hangzhou, 310027 Zhejiang People's Republic of China.
authors: Tao
authors: T
authors: Li
authors: Institute of Process Equipment, Zhejiang University, Hangzhou, 310027 Zhejiang People's Republic of China ; High-Pressure Process Equipment and Safety Engineering Research Center of Ministry of Education, Zhejiang University, Hangzhou, 310027 Zhejiang People's Republic of China ; The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027 Zhejiang People's Republic of China.
authors: Jinyang
authors: J
authors: Zheng
authors: Chinese Standardization Committee on Boilers and Pressure Vessels, Beijing, 100029 People's Republic of China.
authors: Zhiwei
authors: Z
authors: Chen
keywords: Plastic deformation; Strain hardening behavior; Stress strain curve