Selected properties of new "duplex" cast steel

• Autorzy: Pietrowski S. , Gumienny G. , Masalski M.
• Języki publikacji: EN

Abstrakty

EN

In this paper selected properties of new 'duplex' cast steel are presented. The new cast steel was devised in HYDRO-VACUUM company in Grudziądz, where 'duplex' cast steel for pump elements is smelted. The goal was to devise a new grade of 'duplex' cast steel of better physicochemical properties and cheaper than now applied. It was demonstrated, that there is the possibility of devising the new grade of 'duplex' cast steel. It is characterized by higher mechanical properties, similar wear resistance and greater corrosion resistance in 15% water solution of H2SO4 in comparison to now ap p lied 'duplex' cast steel. The chemical composition was selected to obtain in microstructure about of 50% ferrite and 50% austenite. It guarantee the highest properties and the lowest costs of its smelting. In the paper results of: the microstructure, Rm, Rp0,2, A5, HB, wear resistance and corrosion resistance in water solution of 15% HCl and H2SO4 acids of new cast steel was presented. They were compared with now applied in HYDRO-VACUUM company 'duplex' cast steel.

Słowa kluczowe

EN

duplex cast steel; microstructure; mechanical properties; abrasive wear; corrosion

PL

staliwo typu duplex; mikrostruktura; właściwości mechaniczne; zużycie ścierne; korozja

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 4
• Strony: 123--130
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Pietrowski S.

autor

Gumienny G.

autor

Masalski M.

• HYDRO-VACUUM, Droga Jeziorna 8 Str., 86-303 Grudziądz, Poland,

Bibliografia

• [1] Practical Guidelines for the Fabrication of Duplex Stainless Steel. International Molybdenum Association. London, 2009.
• [2] Practical Guidelines for the Fabrication of High Performance Austenitic Stainless Steels. International Molybdenum Association. London, 2010.
• [3] Nowacki J.: Duplex steel and its weldability. Warsaw: WNT, 2009 (in Polish).
• [4] Adamczyk J.: Metal materials engineering. Gliwice, of Silesian University of Technology Publishing House 2004 (in Polish).
• [5] Dobrzański L. A.: Bases of materials and metal science. Gliwice - Warsaw: WNT, 2002 (in Polish).
• [6] Malkiewicz T.: Metal science of iron alloys. Warsaw - Cracow: PWN, 1976 (in Polish).
• [7] Blicharski M.: Introduction to materials engineering. Warsaw, WNT, 2003 (in Polish).
• [8] PN-EN 10020:2003 Definition and classification of steel grades (in Polish).
• [9] Kawiak M., Nowacki J.: Mechanical properties of duplex steels welded joints. Materials Engineering. 2003. 6. p. 720 - 723.
• [10] Lalik S., Cebulski J., Rzychoń T.: Studies of the thermal cycle and welding technology influence on properties and the structure of duplex steel joint. Materials Engineering. 2005. 3. p. 112-116.
• [11] Pirowski Z., Gwiżdż A., Uhl W.: Two-phase alloys - chromium - nickel - molybdenum cast steel. Part I: superficial wear - measure methods of erosive wear. Bulletin of Foundry Research Institute. 2002. 1. p. 14-19 (in Polish).
• [12] Pirowski Z., Gwiżdż A., Uhl W.: Two-phase alloys - chromium - nickel - molybdenum cast steel. Part. II: Microstructure assessment. Bulletin of Foundry Research Institute. 2002. 2. p. 12-23 (in Polish).
• [13] Pirowski Z., Gwiżdż A., Uhl W.: Two-phase alloys - chromium - nickel - molybdenum cast steel. Part. III: Resistance on corrosion; microhardness; erosive and corrosive wear. Bulletin of Foundry Research Institute. 2002. 3. p. 12-20 (in Polish).
• [14] Pirowski Z., Wodnicki J.: Two-phase alloys - chromium - nickel - molybdenum cast steel. Part. IV: Selection of machining parameters to improvement of corrosive wear. Bulletin of Foundry Research Institute. 2002. 5. p. 3-10 (in Polish).
• [15] Kuder M.: Influence of wall thickness on selected parameters of duplex steel structure. Bulletin of Foundry Research Institute. 2001. 5. p. 8-17 (in Polish).
• [16] Leger M. T.: Predicting and Evaluating Ferrite Content in Austenitic Stainless Steel Castings. Stainless Steel Castings. ASM STP 756. 1982. p. 105-125.
• [17] http://www.lme.com.
• [18] http://www.all-met.pl.
• [19] http://www.euro-inox.org.
• [20] Baker H., ASM Metals HandBook Volume 03 - Alloy Phase Diagrams. ASM International. 1992.
• [21] Gudremon E. Special steels. Moscow 1960 (in Russian).