Microstructural investigations of the PM superalloy N18 in deformed and undeformed state.

• Autorzy: Neves S. , Penkalla H.J. , Schubert F. , Singheiser L.
• Konferencja: XVth Physical Metallurgy and Materials Science Conference on Advanced Materials & Technologies AMT'98, 17-21 May 1998, Kraków-Krynica, Poland
• Języki publikacji: EN

Abstrakty

EN

In the present work microstructural investigations by means of transmission electron microscopy (TEM) were carried out on the powder metallurgy (PM), nickel-base superalloy N18. The material was characterized in the as-received, hot extruded state as well as after complete heat treatment. Especially the gamma-distribution and the presence of further precipitates were considered. The elemental distribution was characterized with the assistance of energy dispersive X-ray analysis (EDX) and energy filtering (TEM) (EFTEM). Additionally strain rate controlled tensile tests with different strain rates were carried out at 700 degrees centigrade in laboratory air. The microstructure of the deformed material was mainly investigated on dislocation distribution and deformation inhomogeneities.

Słowa kluczowe

EN

microstructure; powder metallurgy; superalloy; nickel; deformation; electron microscopy

PL

mikrostruktura; metalurgia proszków; nadstop; nikiel; odkształcenie; mikroskopia elektronowa

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 1998
• Tom: R. XIX, nr 3
• Strony: 459--462
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Neves S.

• Institute for Materials in Energy Systems IWE, Forschungszentrum Jülich GmbH

autor

Penkalla H.J.

• Institute for Materials in Energy Systems IWE, Forschungszentrum Jülich GmbH

autor

Schubert F.

• Institute for Materials in Energy Systems IWE, Forschungszentrum Jülich GmbH

autor

Singheiser L.

• Institute for Materials in Energy Systems IWE, Forschungszentrum Jülich GmbH

• Institute for Materials in Energy Systems IWE, Forschungszentrum Jülich GmbH

Bibliografia

• [1] M. Weber, M. Rödig, F. Schubert and H. Nickel (PhD-Thesis), Berichte des Forschungszentrums Jülich Nr. 2958 (1994)
• [2] J.Y. Guedou, J.C. Lautridou and Y. Honnorat, Superalloys 1992, The Minerals, Metals & Materials Society (1992) 267
• [3] T. Schober and D.G. Westlake, Metallography 14 (1981) 359
• [4] B.J. Kestel, Mat. Res. Soc. Symp. Proc. 199 (1990) 51
• [5] S.T. Wlodek, M. Kelly and D. Alden, Superalloys 1992, The Minerals, Metals & Materials Society (1992) 467
• [6] S. Pommier, C. Prioul, J.C. Lautridou and P. Bompard, Fatigue Fract. Eng. Mater. Struct. 19 (1996) 1117