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Creep and Toughness of Cryomilled NiAl Containing CrNiAl-AlN + Cr composites were produced by blending cryomilled NiAl powder with approx. 10 vol % Cr flakes. In comparison to the as-consolidated matrices, hot isostatically pressed Cr-modified materials did not demonstrate any significant improvement in toughness. Hot extruded NiAl-AlN+10.5Cr, however, possessed a toughness twice that determine for the base NiAl-AlN alloy. Measurement of the 1200 to 1400 K plastic flow properties revealed that the strength of the composites was completely controlled by the properties of the NiAl-AlN matrices. This behavior could be successfully modeled by the Rule-of-Mixtures, where load is shed from the weak Cr to the strong matrix.
Document ID
20010060374
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Whittenberger, J. Daniel
(NASA Glenn Research Center Cleveland, OH United States)
Aikin, Beverly
(NASA Glenn Research Center Cleveland, OH United States)
Salem, Jon
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2000
Subject Category
Metals And Metallic Materials
Meeting Information
Meeting: Spring 2001 TMS Annual Meeting and Exhibition
Location: New Orleans, LA
Country: United States
Start Date: February 11, 2001
End Date: February 15, 2001
Sponsors: Metallurgical Society
Funding Number(s)
PROJECT: RTOP 523-31-13
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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