Changes of phase morphology in 29%Cr-6%Ni-3%Mo-3% Cu steel castings with varied wall thickness

• Autorzy: Kalandyk B. , Augustyn-Pieniążek J.
• Języki publikacji: EN

Abstrakty

EN

The article discusses the effect of wall thickness and temperature of solution treatment on the morphology of phases present in castings made from 29%Cr-6%Ni-3%Mo-3% Cu steel. The presence of acicular precipitates near the casting surface in as-cast condition was stated. The precipitates ceased to exist after the solution treatment, while volume fraction of the alloyed ferrite increased quite obviously. Compared with parallel investigations carried out on cast steel heats with lower concentration of Cr (24-25%), it has been started that high concentrations of Cr and Mo favour the occurrence of a brittle phase σ, both in as-cast condition and after solution treatment.

Słowa kluczowe

EN

stainless steel Cr-Ni; heat treatment; sigma phase

PL

stal nierdzewna Cr-Ni; obróbka cieplna; faza sigma

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 1 spec.
• Strony: 175--178
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Kalandyk B.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering AGH, ul. Reymonta 23, 30-059 Cracow, Poland

autor

Augustyn-Pieniążek J.

• Department of Physical & Powder Metallurgy, Faculty of Metals Engineering and Industrial Computer Science AGH, al. Mickiewicza 30, 30-059 Cracow, Poland

Bibliografia

• [1] Stainless steels and nickel alloys, Cast Publishing Inc, Canada (2001).
• [2] A.J. Sedriks, Corrosion of stainless steels, JW Inc, USA (1996).
• [3] R.N. Gunn, Duplex Stainless Steels, Abington, Cambridge, England (1999).
• [4] J.A. Jimenez, M. Carsi, O. A. Ruano, Characterization of a δ/γ duplex stainless Steel, Journal of materials science, vol. 35, (2000) 907-915.
• [5] Z. Cvijovic, A. Ibrahib, D. Mihajlovic, Image Anal Stereol., 20 (Suppl 1), (2001) 151-156.
• [6] D.M.E. Villanueva, F.C.P. Junior, R.L. Plaut, A.F. Padilha, Comparative study on sigma phase precipitation of three of stainless steels: austenitic, superferritic and duplex, Materials Science and Technol, vol. 22, No.9 (2006) 1098-1104.
• [7] M. Pohl, O. Storz, Sigma-phase in duplex-stainless steels, Z. Metallkd., vol. 95, No 7, (2004) 631-638.
• [8] T.H. Chen, J.R. Yang, Effects of solution treatment and continuous cooling on o phase precipitation in a 2205 duplex stainless Steel, Materials Sci. and Eng. A311 (2001) 28-41.
• [9] T. Sourmail, Precipitation in creep resistant austenitic stainless steels, Materials Science and Technol., vol.l7, (2001) 1-12.
• [10] M.B. Cortie E.M. Jackson, Simulation of the precipitation of sigma phase in duplex stainless steels, Metallurgical and Materials Transactions A, vol. 28A (1997) 2477-2484.