Search Results - "Zahra, C. Y."

Coexistence of clusters, GPB zones, S″-, S′- and S-phases in an Al–0.9% Cu–1.4% Mg alloy by Charai, A., Walther, T., Alfonso, C., Zahra, A.-M., Zahra, C.Y.

“…The precipitation phenomena in an Al–0.9 at.% Cu–1.4 at.% Mg alloy were studied by high resolution electron microscopy and calorimetry in order to clarify the…”
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Effects of Ag or Si on precipitation in the alloy Al-2.5 mass% Cu-1.5 mass% Mg by Zahra, A.-M., Zahra, C. Y., Dumont, M.

“…Calorimetric measurements and electron microscopy observations were performed on Al-2.5 mass% Cu-1.5 mass% Mg alloys containing also 0.4, 1 or 2% Ag or 0.5%…”
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Comments on "Room-temperature precipitation in quenched Al-Cu-Mg alloys: a model for the reaction kinetics and yield-strength development" by Zahra, A.-M., Zahra, C. Y., Verlinden, B.

“…Several arguments based mainly on calorimetric measurements are presented supporting the idea that during low-temperature ageing of Al-Cu-Mg alloys, plate-like…”
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Comments on “cluster hardening in an aged Al-Cu-Mg alloy” by Zahra, A.M, Zahra, C.Y, Alfonso, C, Charaı̈, A

“…Several arguments exist which are in favor of GPB zone formation after rapid clustering in quenched Al-alloys containing approx1 at.% Mg, and 1.5 at.% Mg,…”
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New AlDyNi(Co) glasses – decomposition behaviour by Schmidt, U, Eisenschmidt, C, Zahra, C.Y, Zahra, A.-M

“…The decomposition of Al 84Dy 6Ni 10 and Al 84Dy 8Ni 6Co 2 glasses prepared by melt spinning was investigated by means of X-ray diffraction (XRD), electrical…”
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Effects of minor additions of Mg and Ag on precipitation phenomena in Al-4 mass% Cu by Zahra †, A.-M., Zahra, C. Y., Raviprasad ‡, K., Polmear, I. J.

“…Calorimetric measurements and transmission electron microscopy have been used to study the effects of minor additions of Mg and Ag on mechanism and kinetics of…”
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Decomposition of La- and Dy-rich amorphous alloys by Schmidt, U, Eisenschmidt, C, Weiß, M, Zahra, C.Y, Zahra, A.-M

“…An Al 25La 50Ni 25 and newly discovered Al 38Dy 50Ni 12, Al 38Dy 50Co 12 and Al 41Dy 47Ni 6Co 6 glasses prepared by melt-spinning were studied by means of…”
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Crystallization of amorphous AlDy- and AlDyCo-alloys by Schmidt, U., Eisenschmidt, C., Vieweger, T., Zahra, C.Y., Zahra, A.-M.

“…Partially or fully amorphous Al 89Dy 11, Al 84Dy 11Co 5 and Al 84Dy 6Co 10 alloys were prepared by melt spinning. The amorphous to crystalline and subsequent…”
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Analysis of precipitation in Al-based alloys using a novel model for nucleation and growth reactions by STARINK, M. J, ZAHRA, C. Y, ZAHRA, A.-M

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Transformation of the quasicrystalline phase Al-Cr-Fe induced by rapid solidification by ZIANI, A, MICHOT, G, PIANELLI, A, REDJAÏMIA, A, ZAHRA, C. Y, ZAHRA, A. M

“…A quasicrystalline phase, Q, with icosahedral symmetry was detected by x-ray diffraction and transmission electron microscopy in Al-3Cr-xFe (x=0, 1 or 3 at.%)…”
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The Perkin-Elmer 1020 series thermal analysis system by Zahra, C.Y, Zahra, A.-M

“…The performance of a Perkin-Elmer 1020 Series DSC7 Thermal Analyser has been tested between 20 and 700°C with respect to isothermal and dynamic baseline…”
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Calorimetric studies of AgI-doped tellurite glasses by Zahra, C.Y., Zahra, A.-M.

“…The heat capacity changes during the glass transition of TeO 2TlO 0.5 glasses containing AgI or (AgI) 0.75(TlI) 0.25 up to mole fractions of 0.4 or 0.55 have…”
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Heat capacities of aluminium alloys by ZAHRA, A.-M, ZAHRA, C. Y, JAROMA-WEILAND, G, NEUER, G, LACOM, W

“…In the framework of the European COST 507 project the specific heat capacities of aluminium alloys and metal matrix composites based thereon have been measured…”
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Effect of scandium on the decomposition of aluminium-zinc alloys by DUTKIEWICZ, J, ZHARA, A. M, ZAHRA, C. Y

“…The effect of Sc on the hardness, structure and heat evolution of an Al--40% Zn alloy was investigated. It was found that contrary to its action in other…”
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The influence of Cu and Mg additions on the decomposition of Al-(40 to 50) wt% Zn alloys during isothermal and continuous heating by ZAHRA, A.-M, ZAHRA, C. Y, DUTKIEWICZ, J, CIACH, R

“…The influence of 1 wt% copper and 0.2 wt% magnesium additions on the heat evolution and structural changes of Al-40 and Al-50 wt% Zn alloys during isothermal…”
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Comment on 'Positron lifetime study of an Al-1.7 at.% Mg-1.1 at.%Cu alloy' by Zahra, A.-M., Zahra, C.Y.

“…Calorimetric results on an Al-Mg-Cu alloy do not agree with a recent interpretation of positron annihilation experiments but support earlier proposals. The…”
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Comment on 'Positron lifetime study of an Al-1.7at.% Mg-1.1 at.% Cu alloy by Zahra, A-M, Zahra, C Y

“…Calorimetric results on an Al-Mg-Cu alloy do not agree with a recent interpretation of positron annihilation experiments but support earlier proposals. The…”
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Effects of minor additions of Mg and Ag on precipitation phenomena in A1-4 mass% Cu by Zahra, A-M, Zahra, C Y, Raviprasad, K, Polmear, I J

“…Calorimetric measurements and transmission electron microscopy have been used to study the effects of minor additions of Mg and Ag on mechanism and kinetics of…”
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Comments on 'The influence of Mg contents on the formation and reversion of Guinier-Preston zones in Al-4.5 at percent Zn-xMg alloys' by Zahra, A, Zahra, C Y, Lacom, W, DEGISCHER, H P

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The influence of Cu and Mg additions on the decomposition of Al-(40 to 50) wt pct Zn alloys during isothermal and continuous heating by Zahra, A-M, Zahra, C Y, Dutkiewicz, J, CIACH, R

“…The influence of 1 wt pct copper and 0.2 wt pct magnesium additions on the heat evolution and structural changes of Al-40 and Al-50 wt pct Zn alloys during…”
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