Formation of Metastable Disordered Ni3Al by Pulsed Laser-Induced Rapid Solidification

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Formation of Metastable Disordered Ni3Al by Pulsed Laser-Induced Rapid Solidification

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Title: Formation of Metastable Disordered Ni3Al by Pulsed Laser-Induced Rapid Solidification
Author: Manos, James T.; West, Jeffrey A.; Aziz, Michael

Note: Order does not necessarily reflect citation order of authors.

Citation: West, Jeffrey A.,James T. Manos, and Michael J. Aziz. 1991. Formation of metastable disordered Ni3Al by pulsed laser-induced rapid solidification. Materials Research Society Symposia Proceedings 213: 859-864.
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Abstract: Thin films of Ni3 formed by co-evaporation onto insulating substrates form single phase fcc disordered lattice upon rapid solidification following excimer laser-induced melting with an interface velocity of ~4 m/s. Transmission Electron Microscopy (TEM) and x-ray diffraction (XRD) analyses exhibit no superlattice diffraction at room temperature. Resistivity measurements, indicating that the disordered phase has a higher resistivity and much smaller temperature coefficient at room temperature than the stable ordered (L12) phase, permit us to monitor phase changes and ordering on a fast time-scale. Subsequent annealing recovers long-range order, with resistivity measurements indicating that reordering begins just below 300 degrees C.
Published Version: http://www.mrs.org/s_mrs/sec.asp?CID=1727&DID=38980
Other Sources: http://www.seas.harvard.edu/matsci/people/aziz/publications/mja048.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:2870604

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  • FAS Scholarly Articles [6463]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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