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Vanadium micro-alloyed high strength steels for forgings

C. Zitelli ; Università di Perugia, Dipartimento di Ingegneria, Perugia, Italy
S. Mengaroni ; ThyssenKrupp Acciai Speciali Terni, Terni, Italy
A. Di Schino ; Università di Perugia, Dipartimento di Ingegneria, Perugia, Italy

Sažetak

To fulfill the industrial demand of forged steels with high tensile properties and microstructural requirements coupled with reduced cost, the possibility to increase the properties of C-Mn steels by means of precipitation strengthening as achieved by micro-alloying (and without the addition of expensive elements such as Mo and Cr) has been evaluated. In order to do that, the effect of V addition has been exploited by means of metallurgical modelling followed by a laboratory ingot manufacturing. Heat treatment has been designed aimed to achieve the desired target tensile properties. Results show that ASTM A694 F70 grade requirements can bel fulfilled by 0,15% V addition and a proper heat treatment in a ferrite-pearlite microstructure, representative of a forged component.

Ključne riječi

micro-alloying steel; vanadium; chemical composition; heat treatment; mechanical properties

Hrčak ID:

180974

URI

https://hrcak.srce.hr/180974

Datum izdavanja:

1.7.2017.

Posjeta: 1.938 *