On the Relationship between Yield Ratio, Uniform Elongation, and Strain Hardening Exponent of High Grade Pipeline Steels

摘要

Physical parameters characterizing the deformation capacities of high grade line pipes were normally yield ratio, uniform elongation, and strain hardening exponent. The purports to control these parameters were presented in the paper and the demand of line pipes to resist plastic deformation was analyzed. By means of statistics and regression analysis of test data, the relationship between uniform elongation, strain hardening exponent, and yield ratio were developed.