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Metallurgist
Published in: Metallurgist 11-12/2021

04-04-2021

Fatigue Strength of Structural Steel DAN400 Plate Produced by Thermomechanical Treatment Technology with Accelerated Cooling

Published in: Metallurgist | Issue 11-12/2021

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Abstract

Fatigue properties of contemporary low-carbon micro-alloyed structural steel grades have not been studied sufficiently in spite of a large amount of available reference information. This slows down and hinders introduction of the latest generation of structural steel grades into production chains for manufacturers of heavy machinery and structures. According to multicycle fatigue test results for plate steel grade DAN400 36 mm thick with σy = 450 MPa, Cequ = 0.27%, and Pwi = 0.12% produced by thermomechanical treatment technology with accelerated cooling (TMTT + AC) the fatigue strength (σ–1, MPa) on a base of two million cycles, the index of the left-hand branch of the fatigue curve m = 1/α, and coefficients C and α in the equation for the left-hand branch of the fatigue curve σ–1 = С·N–α are determined. An experimental fatigue curve is constructed on double logarithmic coordinates for the test steel.
previous article Effect of Structural State on Tendency Towards Stress Corrosion Cracking of Ultralow-Carbon Martensitic and Low-Alloy Pipe Steels
next article Method for Determining the Kinematic Parameters of Longitudinal Pass Rolling

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Metadata
Title
Fatigue Strength of Structural Steel DAN400 Plate Produced by Thermomechanical Treatment Technology with Accelerated Cooling
Publication date
04-04-2021
Published in
Metallurgist / Issue 11-12/2021
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-021-01114-z

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