A microstructural fatigue crack nucleation model is developed for cast irons with graphite inclusions of different shapes, based on Eshelby’s solution for ellipsoidal inclusions and the Tanaka-Mura-Wu model for fatigue crack nucleation. This model is used to analyze ductile cast iron with nodular graphite microstructure, gray cast iron with flake-like graphite microstructure, and compacted graphite iron with vermicular graphite microstructure. Excellent agreements are found between the model predictions and the experimental data or the Coffin-Manson-Basquin best-fit correlations. This has established an analytical microstructure-fatigue prediction approach, which saves the time and cost of fatigue design with regards to these materials.
Microstructure-Fatigue Relationships for Cast Irons
Sae Technical Papers
WCX SAE World Congress Experience ; 2020
2020-04-14
Aufsatz (Konferenz)
Englisch
Iron , Fatigue , Casting , Nanotechnology , Graphite
Engineering Index Backfile | 1932
|Engineering Index Backfile | 1941
Engineering Index Backfile | 1939
|Microstructure and Wear Behavior of Austempered and as-cast Ausferritic Gray Cast Irons
SAE Technical Papers | 2011
|Austempered baintic cast irons
Kraftfahrwesen | 1982
|