Zobrazeno 1 - 10
of 60
pro vyhledávání: '"J.M. Papazian"'
Autor:
J.M. Papazian, A. Levy
Publikováno v:
Acta Metallurgica et Materialia. 39:2255-2266
Elastoplastic finite element analyses of realistic models of short-fiber-reinforced composites were extended to include the effects of prior thermal treatments on predictions of subsequent mechanical properties. Two three-dimensional models were used
Autor:
R.P. Silberstein, J.B. Whiteside, D. Fridline, E.L.J. Anagnostou, G. Welsh, S. Engel, J. Madsen, D. Hoitsma, J.M. Papazian, Jerrell A. Nardiello
Publikováno v:
2007 IEEE Aerospace Conference.
The Structural Integrity Prognosis System (SIPS) is being designed to provide prompt, informed predictions of the structural viability of individual assets based on tracking of their actual use and modeling of anticipated usage. The prognosis system
Publikováno v:
International Journal of Heat and Mass Transfer. 23:219-224
A model has been developed for the prediction of bubble departure radii from flat solidification interfaces, including the effect of thermocapillary forces. Under normal gravity conditions, the necessary gas bubble radius required for departure from
Publikováno v:
Le Journal de Physique Colloques. 48:C3-513
The development of a sub-surface layer of porosity during heat treatment has been studied in a variety of Al-Li alloys. Pure binary Al-Li alloys and three commercial materials were heat treated in air, vacuum and hydrogen for various lengths of time.
Publikováno v:
Le Journal de Physique Colloques. 48:C3-231
Autor:
R.J. Livak, J.M. Papazian
Publikováno v:
Scripta Metallurgica. 18:483-488
Etude experimentale de quatre alliages contenant 5,1 a 6,0% poids Zn, 2,5 a 4,0% poids Mg et 0 a 0,6% poids Cu. L'etude par calorimetrie montre que le cuivre change de maniere significative la phase precipitee intermediaire et montre aussi l'efficaci
Autor:
J.M. Papazian
Publikováno v:
Materials Science and Engineering. 79:97-104
Differential scanning calorimetry (DSC) experiments were performed to evaluate the effects of retrogression and re-aging heat treatments on the precipitate microstructures of aluminum alloy 7075 in the T651 temper condition. The retrogression heat tr
Publikováno v:
Materials Science and Engineering. 94:219-224
The tensile strength and minimum bend radii of aluminum-lithium alloys 8090 and 8091 were measured after solution heat treatments of various durations in air or molten salt. The yield and ultimate tensile strengths were found to decrease systematical
Autor:
J.M. Papazian, J.H. Driver
Publikováno v:
Acta Metallurgica. 21:1139-1149
Constant activity nitriding of Fe-1.7 and 3 at.%Mo alloys in the temperature range 500–600°C produces homogeneous precipitation of fine coherent disc-shaped zones on {001} ferrite planes giving rise to continuous streaking in 〈001〉 α directio
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