In situ TEM straining experiments on incoloy Ma956 at room temperature and at high temperatures.

• Autorzy: Wasilkowska A. , Bartsch M. , Messerschmidt U. , Czyrska-Filemonowicz A.
• 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

A direct experimental proof of dislocation motion during plastic deformation of ferritic oxide dispersion strengthened (ODS) alloys is first given for ferritic alloy INCOLOY MA956. In situ straining experiments were performed at room temperature and at high temperatures (up to 1010 degrees centigrade) by means of high voltage electron microscopy (HVEM). Moving dislocations revealed a Burgers vector of a/2<111>type. Deformation at room temperature proceeds by jerky motion of dislocations on {110} slip planes. At high temperatures the dislocations show a completely different behaviour. A strong pinning of dislocations at dispersoids was observed, but the density of interaction points was low. Slip takes place on {112} and {123} planes. No subgrain formation was detected.

Słowa kluczowe

EN

dislocation; plastic deformation; alloy; ferrite; temperature

PL

dyslokacja; odkształcenie plastyczne; stop; ferryt; temperatura

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 1998
• Tom: R. XIX, nr 3
• Strony: 463--466
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Wasilkowska A.

• University of Mining and Metallurgy, Faculty of Metallurgy and Materials Science, Kraków, Polska

autor

Bartsch M.

• Max Planck Institute of Microstructure Physics, Weinberg, Germany

autor

Messerschmidt U.

• Max Planck Institute of Microstructure Physics, Weinberg, Germany

autor

Czyrska-Filemonowicz A.

• University of Mining and Metallurgy, Faculty of Metallurgy and Materials Science, Kraków, Polska

• University of Mining and Metallurgy, Faculty of Metallurgy and Materials Science, Kraków

Bibliografia

• [1] F.H. Froes and J. J. de Barbadillo (eds.), Proc. of ASM Int. Conf. on Structural Application of Mechanical Alloying, Myrtle Beach, South Carolina, 1990.
• [2] H. Schröder, E. Arzt, Prakt. Met, 25 (1988) 264.
• [3] E. Arzt, Res. Mechanica, 31 (1991) 399.
• [4] A. Czyrska-Filemonowicz, M. Wróbel, B. Dubiel, P.J.Ennis, Scripta Met., 32 (1995) 331.
• [5] A.Wasilkowska, R.Herzog, A.Czyrska-Filemonowicz, Archives of Metallurgy, 42 (1997) 89.
• [6] U. Messerschmidt and M. Bartsch, Ultramicroscopy, 56 (1994) 163.
• [7] A. Wasilkowska, PhD thesis, University of Mining and Metallurgy, Kraków, in preparation.