Zobrazeno 1 - 10
of 194
pro vyhledávání: '"L.S. Chumbley"'
Publikováno v:
Journal of Alloys and Compounds. 696:382-390
The GdNi GdCo pseudo-binary system, GdNi 1− x Co x , has been investigated by scanning electron microscopy (SEM). While x-ray powder diffraction analysis indicates the existence of the GdNi-type phase in samples up to x = 0.50, SEM investigation of
Autor:
L. Zhong, B.L. Bowersox, J.S. Moran, J.L. Labbe, T.W. Hanigan, E.L. Spicher, Alan M. Russell, Andrew Becker, D.A. Enyart, L.S. Chumbley
Publikováno v:
Journal of Loss Prevention in the Process Industries. 43:263-272
A sample of 532 anhydrous ammonia nurse tanks with manufacture dates ranging from the 1950’s to 2011 were examined during 2012 by side angle ultrasound to measure the locations, sizes, and orientations of flaw indications. The indications were most
Autor:
Vitalij K. Pecharsky, Timothy E. Prost, Durga Paudyal, L.S. Chumbley, Karl A. Gschneidner, Ya. Mudryk
Publikováno v:
Acta Materialia. 92:18-24
Relationships between the electronic structure, magnetostriction, and phase stability of the GdNi 1− x Co x system have been investigated. Increasing the concentration of Co in GdNi 1− x Co x (0 ⩽ x T C . The magnetic field and temperature depe
Publikováno v:
Case Studies in Engineering Failure Analysis, Vol 3, Iss C, Pp 73-79 (2015)
In an accident in southwest Iowa, USA in 2012, an anhydrous ammonia nurse tank vented its entire cargo of 5500 L (1500 gallons) of liquid ammonia to the atmosphere. Follow-up study of the failed tank revealed a through-crack along a weld used to conn
Autor:
H. L. Downing, John D. Verhoeven, L.S. Chumbley, L. G. Fritzemeier, L. L. Jones, W. A. Spitzig, C. L. Trybus, G. D. Schnittgrund, E. D. Gibson
Publikováno v:
Journal of Materials Engineering and Performance. 22:2847-2859
The strength, electrical conductivity, and substructure of deformation processed Cu-15vol%X alloys have been studied where X included Nb, Ta, and Cr. One alloy of Cu-15Nb was studied in which 2% Ag was added to examine solid solution strengthening of
Autor:
Qing Cao, L.S. Chumbley
Publikováno v:
Microscopy. 62:629-638
Rare-earth compounds based on the stoichiometry R5(SixGe1-x)4 (R = rare-earth elements) exhibit many unusual features, including possessing R5(SixGe1-x)3 thin plates which always precipitate from the matrix despite efforts to suppress their formation
Publikováno v:
Journal of Alloys and Compounds. 556:127-134
The effect of mechanical grinding and subsequent low temperature annealing on the orthorhombic to monoclinic structural transition in the Er 5 Si 4 compound was studied by X-ray powder diffraction using both a conventional laboratory Cu Kα 1 radiati
Autor:
Q. Cao, L.S. Chumbley
Publikováno v:
Materials Characterization. 62:737-741
Examination of bulk microstructures of lutetium doped erbium silicide (Er0.9Lu0.1)5Si4 (space group: Pnma) using scanning and transmission electron microscopy (SEM, TEM) reveals the existence of thin plates of a hexagonal phase (space group: P63/mcm)
Publikováno v:
Materials Science and Engineering: A. 528:5219-5222
In order to clarify the phase components and further improve the glass-forming ability of Gd 55 Co 15 Al 30 alloy, substitution of Al with Si was adopted. Although the X-ray powder diffraction experiment indicated an amorphous structure of the Gd 55