Preparation and characterization of melt-spun nickel-based alloys containing heavy metals
Identifieur interne : 000451 ( France/Analysis ); précédent : 000450; suivant : 000452Preparation and characterization of melt-spun nickel-based alloys containing heavy metals
Auteurs : Soltane Lebaili [Algérie] ; John Ajao [Nigeria] ; Sylvaine Hamar-Thibault [France]Source :
- Journal of Alloys and Compounds [ 0925-8388 ] ; 1992.
Abstract
The solidification behaviour and morphology of some nickel-based hardfacing alloys containing heavy metals such as tungsten have been studied by scanning electron microscopy and transmission electron microscopy. These alloys are very sensitive to different cooling rates (from as cast to melt spinning). At low cooling rates, these alloys present as primary phases, i.e. the stable carbide M7C3 or the double carbide M6C (η type), according to the silicon content. For high cooling rates, the alloys occur as either amorphous (high silicon content) or microcrystallized structures depending on silicon level. In this latter case, the solid solution Ni(α) and the metastable carbide M23C6 are observed.
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DOI: 10.1016/0925-8388(92)90649-T
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These alloys are very sensitive to different cooling rates (from as cast to melt spinning). At low cooling rates, these alloys present as primary phases, i.e. the stable carbide M7C3 or the double carbide M6C (η type), according to the silicon content. For high cooling rates, the alloys occur as either amorphous (high silicon content) or microcrystallized structures depending on silicon level. In this latter case, the solid solution Ni(α) and the metastable carbide M23C6 are observed.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li><li>Nigeria</li></country></list><tree><country name="Algérie"><noRegion><name sortKey="Lebaili, Soltane" sort="Lebaili, Soltane" uniqKey="Lebaili S" first="Soltane" last="Lebaili">Soltane Lebaili</name></noRegion></country><country name="Nigeria"><noRegion><name sortKey="Ajao, John" sort="Ajao, John" uniqKey="Ajao J" first="John" last="Ajao">John Ajao</name></noRegion></country><country name="France"><noRegion><name sortKey="Hamar Thibault, Sylvaine" sort="Hamar Thibault, Sylvaine" uniqKey="Hamar Thibault S" first="Sylvaine" last="Hamar-Thibault">Sylvaine Hamar-Thibault</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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