Age Hardening of Mg-3Zn-xCa (X = 0, 0.5, 1.0) wt.% Alloys

Katarzyna Kubok; Lidia Litynska-Dobrzyńska; Anna Wierzbicka-Miernik; Joanna Wojewoda-Budka

doi:10.4028/www.scientific.net/MSF.765.481

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HomeMaterials Science ForumMaterials Science Forum Vol. 765Age Hardening of Mg-3Zn-xCa (X = 0, 0.5, 1.0) wt.%...

Age Hardening of Mg-3Zn-xCa (X = 0, 0.5, 1.0) wt.% Alloys

Abstract:

Alloys of nominal composition Mg-3Zn-xCa (x = 0, 0.5, 1.0) wt.% were prepared by resistance melting and casting under a protective argon atmosphere. All specimens were examined by hardness tests during ageing at 175 °C. It was shown that calcium addition causes the increase in hardness. A detailed characterisation of microstructure of metastable phases has been carried out using transmission electron microscopy (TEM). Calcium addition resulted in much refined and more homogeneous distribution of the precipitates when compared with the binary Mg-3%Zn alloy. The age-hardening of the ternary alloy is attributed to the fine disc-shape plates lying on the basal plane of the matrix.

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Periodical:

Materials Science Forum (Volume 765)

Pages:

481-485

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.765.481

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Online since:

July 2013

Authors:

Katarzyna Kubok, Lidia Litynska-Dobrzyńska, Anna Wierzbicka-Miernik, Joanna Wojewoda-Budka

Keywords:

Magnesium Alloy, Mg-Zn-Ca, Microstructure, Precipitation Hardening

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