Microstructure and properties of ultrafine grain nickel 200 after hydrostatic extrusion processes

• Autorzy: Sitek R. , Krajewski C. , Kamiński J. , Spychalski M. , Garbacz H. , Pachla W. , Kurzydłowski K. J.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the results of the studies of the structure and properties of ultrafine grained nickel 200 obtained by hydrostatic extrusion processes. Microstructure was characterized by means of optical microscopy and electron transmission microscopy. Corrosion resistance was studied by impedance and potentiodynamic methods using an AutoLab PGSTAT 100 potentiostat in 0.1 M Na2SO4 solution and in acidified (by addition of H2SO4) 0.1 M NaCl solution at pH = 4.2 at room temperature. Microhardness tests were also performed. The results showed that hydrostatic extrusion produces a heterogeneous, ultrafine-grained microstructure in nickel 200. The corrosive resistance tests showed that the grain refinement by hydrostatic extrusion is accompanied by a decreased corrosive resistance of nickel 200.

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2012
• Tom: Vol. 30, No. 3
• Strony: 282--289
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Sitek R.

autor

Krajewski C.

autor

Kamiński J.

autor

Spychalski M.

autor

Garbacz H.

autor

Pachla W.

autor

Kurzydłowski K. J.

• Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141 Str., 02-507 Warsaw, Poland

Bibliografia

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