Mechanical properties of phase constituents in selected grades of cast steel

• Autorzy: Garbiak M. , Zubko P.
• Języki publikacji: EN

Abstrakty

EN

The nanoindentation measurements performed on three cast steels of 0.3C-30Ni-18Cr type with various content of niobium and titanium were carried out. Mechanical properties of the main phase constituents of the alloys, such as austenite, MC and M23C6 type carbides, were determined and analysed. The values of hardness (H) and Young modulus (E) for the austenite matrix were similar within the tested alloys. Essential differences (H=12÷24 GPa; E = 250÷400 GPa) were found between the carbide p hases p resent in tested alloys. The nanoindentation measurement on small particles is affected by different effects. One of these effects was excluded using numerical simulation of impressing the phase constituent into the matrix during indentation. The values of H and E obtained from simulation were: 30/450 GPa for NbC; 50/580 GPa for TiC; and 19/320 GPa for Cr₂₃C₆ respectively.

Słowa kluczowe

EN

nanoindentation measurement; Young modulus; austenitic cast steel

PL

pomiar nanoindentacji; moduł Younga; staliwo austenityczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 3 spec.
• Strony: 57--60
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Garbiak M.

• Institute of Materials Science and Engineering, West Pomeranian University of Technology, al. Piastów 17, 70-310 Szczecin

autor

Zubko P.

• Department of Materials Science, Technical University of Košice, Letná 9, Košice, Slovakia

Bibliografia

• [1] Piekarski B.: The thermal fatigue behaviour of creep-resistant Ni-Cr cast steel. Archives of Foundry Engineering, Vol. 7, No 4 (2007) 155–158.
• [2] Knowles D.M. et al.: In service embrittlement of cast 20Cr32Ni1Nb components used in steam reformer applications. Int. J. Press. Vess. Piping, vol.81 (2004) 499-505.
• [3] Garbiak M., Chylińska R.: Microhardness of phase constituents present in creep-resistant cast steel. Chemical Letters, Vol.105 (2011) 187-190.
• [4] Lucca D.A., Hermann K., Klopfstein M.J.:Nanoindentation. Measuring methods and applications. Manufacturing Technology, Vol. 59 (2010) 803-819.
• [5] Garbiak M., Piekarski B.:Węgliki eutektyczne w staliwie austenitycznym. Inżynieria Materiałowa No 1 (2010) 12-16 (in Polish).
• [6] Zubko, P.: Local mechanical properties in microvolume dimensions of metal materials, PhD. thesis, 2008, Košice, (in Slovak).
• [7] Zubko P, Pešek L., Bláhová O.: Mechanical properties of hard particles in soft matrix, Chemical Letters S, 2011, in press.