MATEC Web Conf.
Volume 349, 20216th International Conference of Engineering Against Failure (ICEAF-VI 2021)
|Number of page(s)||7|
|Section||Metallic Materials: Characterization, Mechanical Behavior and Modeling, Detection of Metal Failures|
|Published online||15 November 2021|
Fatigue strength evaluation of a 13%Cr supermartensitic stainless steel by the thermographic method
1 Universidade Federal Fluminense – Departamento de Engenharia Mecânica, Rua Passo da Pátria, 156, São Domingos, Niterói, RJ, Brazil
2 PPEMM- Programa de Pós-Graduação em Engenharia Mecânica e Tecnologia de Materiais - CEFET/RJ, Rua General Canabarro, 485, Maracanã, Rio de Janeiro, RJ, Brazil.
3 Universidade Federal Fluminense – Instituto de Química, Rua São João Batista, 2-188, Centro, Niterói, RJ, Brazil
* Corresponding author: email@example.com
The fatigue limits of a 13Cr super-martensitic stainless steel from a hot rolled seamless tube were determined for three heat treatment conditions, including the as received quenched and tempered (QT) condition, quenched (Q), and quenched and double tempered (Q-DT). These heat treatments were applied to produce different microstructures and different tensile mechanical properties. The microstructures were characterized by microscopy and magnetic methods. The fatigue strength was accessed through the utilization of the thermographic technique. The results show that fatigue limits measured were between 38% and 44% of the ultimate strength. The as quenched condition gave the higher fatigue limit (444 MPa). However, the material has the lower dutility at this condition. The results aid to decide the best heat treatment condition and give support to design in applications where dynamic loadings are expected
© The Authors, published by EDP Sciences, 2021
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