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Microstructure Strength Relationship in Microalloyed Cast Steels

Barbara Kalandyk 

AGH University of Science and Technology (AGH), al. Mickiewicza 30, Kraków 30-059, Poland


The staircase test block with 20, 45 and 75mm wall thickness were performed on low alloyed Mn-Ni cast steels microalloyed by V or V + Nb additions. Precipitations of carbo -nitrides in these alloys are related to the different cooling rate and segregation during solidification process.
The effects of V + Nb nanoparticles and heat treatments increased yield strength up to 850-950 MPa at the elongation above 8-10 %. Particle size changes from 10 to 60nm and depends on the cooling rates (0,15 - 0,9 0C) and the process of microalloying. Carbo - nitrides are distributed mainly in one phase of mikrostructrue.


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Presentation: poster at E-MRS Fall Meeting 2004, Symposium C, by Barbara Kalandyk
See On-line Journal of E-MRS Fall Meeting 2004

Submitted: 2004-05-26 11:00
Revised:   2009-06-08 12:55