Superplastic deformation in a coarse-grained Fe3Al based alloy

The superplastic deformation behavior in a coarse-grained Fe-28.9Al-5Cr-0.5Nb-0.1C at. pct alloy is studied. Large elongation is achieved with a maximum value of 254 percent at 850 C and an initial strain rate of 8.4 x 10 exp -4/s. The substructure of the deformed specimens is characterized by subgr...

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Veröffentlicht in:	Scripta materialia 2001-03, Vol.44 (3), p.501-505
Hauptverfasser:	GAO, D. C, YANG, W. Y, HUANG, X, SUN, Z. Q
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: structure, mechanical and thermal properties Deformation and plasticity (including yield, ductility, and superplasticity) Exact sciences and technology Mechanical and acoustical properties of condensed matter Mechanical properties of solids Metals. Metallurgy Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The superplastic deformation behavior in a coarse-grained Fe-28.9Al-5Cr-0.5Nb-0.1C at. pct alloy is studied. Large elongation is achieved with a maximum value of 254 percent at 850 C and an initial strain rate of 8.4 x 10 exp -4/s. The substructure of the deformed specimens is characterized by subgrain boundaries with low misorientation angles and high dislocation density within the subgrains, indicating that the basic process of deformation is the motion of dislocation rather than grain boundary sliding. (CSA)
ISSN:	1359-6462 1872-8456
DOI:	10.1016/S1359-6462(00)00626-6