Study on the Microstructure and Mechanical Properties of 20 Steel Strain Aging

Abstract

Abstract:The strain aging process in the prefabrication process of 20 steel high-pressure pipe was simulated. The microstructure, hardness and impact absorption energy of the 20 steel pipes in the process were studied, and the mechanism was explained. The study shows that normalizing before prefabricated and stress relief annealing after prefabricated can be better to ensure the performance of the elbow.