Please use this identifier to cite or link to this item: doi:10.22028/D291-23997
Title: Influence of coarse second phase additions on mechanical properties of NiAl
Author(s): Clemens, Helmut
Rumberg, I.
Schretter, P.
Grahle, Peter
Lang, O.
Wanner, Alexander
Arzt, Eduard
Language: English
Year of Publication: 1993
OPUS Source: High-temperature ordered intermetallic alloys V : symposium held November 30 - December 3, 1992, Boston, Massachusetts, U.S.A. - Pittsburgh, Pa. : Materials Research Society, 1993. - (Materials Research Society symposium proceedings ; 288), S. 1087-1092
SWD key words: Aluminiumlegierung
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: NiAl/Nb and NiAl/Cr composite materials were prepared by a powder metallurgical approach. The content of the second phases varied between 5 and 10 weight percent. The thermodynamic stability of Nb and Cr particles in the NiAl matrix was studied at 1473 K (1200 °C) by means of SEM, XRD and microhardness measurements. In the case of Nb the formation of a Laves phase (NbNiAl) was observed whereas the Cr particles remained stable but were hardened to a remarkable extent due to in-diffusion of Ni and Al. This paper presents the results of three-point bending tests performed on as-HIPed and annealed material at room temperature and elevated temperatures. The yielding behavior at room temperature and the creep behavior at 1200 K (927 °C) were investigated by compression tests.
Link to this record: urn:nbn:de:bsz:291-scidok-20152
Date of registration: 2-Feb-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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