Work

A novel crack propagation rate model based on a two-parameter approach for electron beam welded joint of nickel-based superalloys

Year: 2025

Type: article

Abstract: Fatigue crack propagation tests were carried out on Nimonic 80A electron beam welded joints with different stress ratio using standard CT specimens. The crack propagation rate was characterised using the ‘Kmax−Kmin’ method, the ‘Kmax−Kop’ method and the ‘(Kmax)α(ΔK+)1−α’ two-parameter method. Subsequently, a new crack propagation rate model is proposed, and its accuracy is verified by co-simulation using Abaqus and Franc 3D. The new model can better describe the crack propagation rate under different stress ratio.

Source: Philosophical Magazine Letters

DOI: 10.1080/09500839.2025.2600209

Authors: Tianjian Wang, Fenling Wang, Yunqing Jiang, Tongfei Zou, Hong Zhang

Institutions: China Iron and Steel Research Institute Group, Dongfang Electric Corporation (China), Sichuan University

Language: English

Topic: Fatigue and fracture mechanics

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, State Key Laboratory of Power Transmission Equipment and System Security

Awards: G3183167260, G5776701440