Microstructural effects on the fatigue crack growth behavior of γ-phase containing WC-Co cemented carbides: Mechanics, mechanisms and fatigue sensitivity

Key Points

• Fatigue crack growth behavior is significantly influenced by microstructural effects in γ-phase cemented carbides, indicating material durability.
• Analyzed crack growth rates show a clear dependence on the microstructure, with variations noted in WC-Co phase compositions.
• Assessment using mechanical testing and microstructural examinations identifies critical mechanisms influencing fatigue sensitivity in these materials.
• Findings stress the need for future studies to explore these microstructural impacts in diverse manufacturing conditions for enhanced material performance.