Fatigue failure of micro-alloyed 23MnB4 steel

• Autorzy: Rusz S. , Cizek L. , Filipec P. , Pastrnak M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In the following paper there have been the structure and fatigue properties of micro-alloyed 23MnB4 steel in initial state and after heat treatment evaluated. Design/methodology/approach: Fatigue test of micro-alloyed 23MnB4 steel was completed by metallographic and fracture analyses. For scope the methods of the light microscopy and SEM were used. Findings: Microstructure of examined alloy in initial state was characterized mostly by fine ferrite with pearlitic net and in state after heat treatment was formed by martensite or partly by bainite and after tempering was formed by tempered martensite. Objective of this work consisted in determination of fatigue characteristics of micro-alloyed 23MnB4 steel, including fracture analyze. Results of fatigue testing at various stress levels for the samples in initial state and after the heat treatment have confirmed that obtained values of cycles to rupture were at least 585 000 cycles. Change of fatigue properties in dependence on heat treatment of the used steel. Research limitations/implications: For define fracture area a samples must be provide with notch. The experiment was limited by occurrence a void in cast alloys. Practical implications: The results may be utilized for application of the investigated material in process of manufacturing. Originality/value: These results contribute to explanation of fracture mechanism of micro-alloyed 23MnB4 steel.

Słowa kluczowe

EN

mechanical properties; micro-alloyed 23MnB4 steel; fatigue test; fracture characteristics

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 2
• Strony: 356--363
• Opis fizyczny: Bibliogr. 15 poz., wykr.

Twórcy

autor

Rusz S.

autor

Cizek L.

autor

Filipec P.

autor

Pastrnak M.

• Faculty of Mechanical Engineering, VSB - Technical University of Ostrava, 17 listopadu 15, 708 33 Ostrava - Poruba, Czech Republic,

Bibliografia

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