Metalurgija: sadašnjost Metallurgy: Present Metalurgija ... - CARNet

P. MALATYŃSKA et al.: CARBON CONTENT INFLUENCE ON THE PERITECTIC REACTION PATH IN STAINLESS STEELS
and properties of cast steels. Several strength and corrosion
resistant properties depend on its pathway. This
reaction mainly depends on the alloying elements content
and also – as it was shown in the presented here
study – on the carbon content. It is worth emphasizing
that such strong infl uence, on the three-phase area of the
peritectic reaction and its further transformation, is exerted
by such small differences in the carbon content
(calculations were performed every 0,01 % of C). It was
noticed, that the higher carbon content the wider area of
the peritectic reaction occurrence. However, the following
transformation of the BCC_A2 phase into FCC_A1
increases its range. Unfortunately the BCC_A2 phase
amount after the alloy solidifi cation depends on the peritectic
reaction range. The BCC_A2 phase is very important
due to its infl uence on corrosion resistance
properties and formation of brittle phases.
Acknowledgements
The research program was performed within the
Project: NSC No. N N508 624440 (2011-2013)
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Note: The responsible translator for English language: “ANGOS”
Translation Offi ce, Kraków, Poland
18 METALURGIJA 52 (2013) 1, 15-18
A)
B)
Figure 6 Solidifi cation course in temperature 1 475 ˚C of Fe-
Cr18-Ni9 system: A) 0,01 -0 ,03 % C, B) 0,04 - 0,06 % C