☆ 4.1 Article

Role of Martensite-Austenite Component of Bainitic Structure in Formation of Properties of Pipe Steel. 3. Effect of Martensitic Transformation of Austenite in the MA-Component of Bainite on the Ductility of Steel

METAL SCIENCE AND HEAT TREATMENT (2023)

Role of Martensite-Austenite Component of Bainitic Structure in Formation of Properties of Pipe Steel. 1. Effect of Parameters of TMT

N. G. Kolbasnikov et al.

Summary: The effect of hot rolling and controlled cooling parameters on the formation of the martensite-austenite component in bainitic and ferritic-bainitic structures of K60 pipe steel was studied. Experimental results showed that the volume fraction of the martensite-austenite component varied from 0.5% to 8% depending on the parameters of the thermomechanical treatment. The accumulated strain was found to play a dominant role in the formation of martensite-austenite particles and the determination of the acicular ferrite fraction.

METAL SCIENCE AND HEAT TREATMENT (2022)

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Article Engineering, Civil

The research on pipe structural behavior of 3D UOE manufacturing process

Jian-xing Yu et al.

Summary: In this study, a 3D UOE manufacturing process is established using ABAQUS software with detailed boundary conditions. The effects of each forming step on geometric profile and material distribution are analyzed in three directions, and the structural behavior of the UOE pipe is determined according to the Bauschinger effect principle. The 3D UOE model shows a stronger collapse resistance and sensitivity to external pressure compared to the 2D model.

THIN-WALLED STRUCTURES (2021)

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Article Engineering, Manufacturing