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See detailEtude microstructurale des phases métastables dans les alliages Zn-Al
Lecomte-Beckers, Jacqueline ULg; Terziev, L.; Rashev, P. et al

in Journal de Microscopie et de Spectroscopie Electroniques (1989), 14[2]

Description de la précipitation complexe observée durant le vieillissement des alliages zinc-aluminium avec de petites quantités de cuivre et de magnésium

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See detailQuantitative X-ray microanalysis of precipitates in zinc-aluminium-copper
Rashev, P.; Terziev, Luben; Lecomte-Beckers, Jacqueline ULg et al

in Proceeding of the 12th International Congress on XR optics and microanalyses (1989)

The aim of the present study is to adapt the Cliff-Lorimer method for quantitative analysis of thin foils and to obtain information about the composition of fine metastable precipitates in Zn-Al-Cu alloys ... [more ▼]

The aim of the present study is to adapt the Cliff-Lorimer method for quantitative analysis of thin foils and to obtain information about the composition of fine metastable precipitates in Zn-Al-Cu alloys. The coefficients K(al-zn) and K(al-cu) were determined for accelerating voltage of 200 kV, about which there has no been data ever mentioned. Some applications of the method are given. [less ▲]

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See detailStudy of transition phases during isothermal aging at 250°C of Zn-27% Al alloy
Terziev, L.; Lecomte-Beckers, Jacqueline ULg; Rashev, P. et al

in Physica Status Solidi A : Applied Research (1989), 116[2]

Transition phases during isothermal aging of Zn-27% Al alloy at 250 °C are studied by means of transmission electron microscopy and diffraction technique. The supersaturated f.c.c. phase decomposes into ... [more ▼]

Transition phases during isothermal aging of Zn-27% Al alloy at 250 °C are studied by means of transmission electron microscopy and diffraction technique. The supersaturated f.c.c. phase decomposes into transition phases by formation of GP zones m. Formation of the rhombohedral phases r and of h.c.p. precipitates (m, x) is observed. [less ▲]

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See detailMicrostructural study of Zn-Al alloy
Terziev, L.; Rashev, P.; Lecomte-Beckers, Jacqueline ULg et al

in Proceedings of The 4th Physics and Chemistry of Solids, School-Symposium Physics of Metals, Polish Academy of Sciences, Institute for Low Temperature and Structure Research (1987)

It is well known that zinc-aluminium alloys posses very good mechanical properties. This is the reason why the investigation of their ageing characteristics is very important for the practice. Several ... [more ▼]

It is well known that zinc-aluminium alloys posses very good mechanical properties. This is the reason why the investigation of their ageing characteristics is very important for the practice. Several solid state reactions between alpha, beta, epsilon and T phases have been established for such materials alloyed with copper, but there has been no detailed on the formation, development and transformation of metastable phases into stable ones. This is exactly the aim of our investigation. [less ▲]

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