Cyclic plastic deformation mechanism and cyclic hardening model of Sanicro 25 steel welded joint

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 827; p. 141878
• Main Authors: Li, Haizhou, Chen, Jintao, Chen, Hui, Xu, Lianyong, Wang, Qingyuan
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 19.10.2021; Elsevier BV
• Subjects: Amplitudes; Austenitic stainless steels; Cyclic hardening model; Cyclic plastic deformation mechanism; Deformation mechanisms; Dislocation morphology; Entanglement; Fatigue life; Low cycle fatigue; Plastic deformation; Precipitation hardening steels; Welded joint; Welded joints; Cyclic plastic deformation mechanism; Welded joint; Dislocation morphology; Cyclic hardening model; Low cycle fatigue

The low cycle fatigue (LCF) behaviors of Sanicro 25 steel welded joint were investigated under different total strain amplitudes (Δεt/2) at 700 °C. The results revealed that the stress amplitude increased with an increase in Δεt/2, while the fatigue life decreased. In addition, the cyclic hardening...