Please use this identifier to cite or link to this item:
doi:10.22028/D291-24007
Title: | 1300-K compressive properties of a reaction milled NiAl-AlN composite |
Author(s): | Whittenberger, J. Daniel Arzt, Eduard Luton, Michael J. |
Language: | English |
Year of Publication: | 1990 |
OPUS Source: | Intermetallic matrix composites : symposium held April 18 - 20, 1990, San Francisco, California, U.S.A.. - Pittsburgh, Pa. : Materials Research Soc., 1990. - (Materials Research Society symposium proceedings ; 194), S. 211-218 |
SWD key words: | Kristallstruktur Nickel Aluminide Stickstoff |
DDC notations: | 620 Engineering and machine engineering |
Publikation type: | Conference Paper |
Abstract: | Cryomilling (high intensity mechanical ball milling in aliquid nitrogen bath) of the B2 crystal structure nickel aluminide leads to a NiAl-AlN composite containing about 10 vol pct second phase which is dispersed as very small diameter (<50 nm) AlN particles in a mantle surrounding particle-free NiAl grains. The AlN particles are the result of reaction milling, where nitrogen incorprated into the matrix during cryomilling reacts with Al during subsequent thermomechanical processing to form a composite. Compressive testing at 1300 K of such materials densified by either hot extrusion or hot isostatic pressing have indicated that strengh at relatively fast strain rates. In addition deformation at 1300 K occurs by two distinct mechanism, where at high strain rates the stress exponent is greater than 13 while at slower rates (<10-7 s-1) a much lower stress exponent (-6) was found. |
Link to this record: | urn:nbn:de:bsz:291-scidok-20373 hdl:20.500.11880/24063 http://dx.doi.org/10.22028/D291-24007 |
Date of registration: | 5-Feb-2009 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - INM Leibniz-Institut für Neue Materialien |
Collections: | INM SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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