FATIGUE CRACK PROPAGATION THROUGH AUSTEMPERED DUCTILE IRON MICROSTRUCTURE

6533b855fe1ef96bd12b061d

RESEARCH PRODUCT

FATIGUE CRACK PROPAGATION THROUGH AUSTEMPERED DUCTILE IRON MICROSTRUCTURE

Lukáš Bubenko Radomila Konečná Gianni Nicoletto

subject

Crack lcsh:TA401-492 Austempered ductile iron lcsh:Materials of engineering and construction. Mechanics of materials Microstructure Fatigue Stress intensity factor

description

Austempered ductile iron (ADI) has a wide range of application, particularly for castings used in automotive and earth moving machinery industries. These components are usually subjected to variable dynamic loading that may promote initiation and propagation of fatigue cracks up to final fracture. Thus, it is important to determine the fatigue crack propagation behavior of ADI. Since fatigue crack growth rate (da/dN) vs. stress intensity factor K data describe fatigue crack propagation resistance and fatigue durability of structural materials, da/dN vs. Ka curves of ADI 1050 are reported here. The threshold amplitude of stress intensity factor Kath is also determined. Finally, the influence of stress intensity factor amplitude to the character of fatigue crack propagation through the ADI microstructure is described.

year	journal	country	edition	language
2010-10-01	Materiálové Inžinierstvo

http://fstroj.uniza.sk/journal-mi/PDF/2010/03-03.pdf

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