[Kovove materialy - Metallic materials]
    Mon - December 09, 2024 - 06:20 No. of hits : 1805133 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 54 (2016), Issue 6

Strengthening in dual-phase structured Mg-Li-Zn alloys
KUDELA Jr., S., ŠVEC, P., BAJANA, O., OROVČÍK, Ľ., RANACHOWSKI, P., RANACHOWSKI, Z.
vol. 54 (2016), no. 6, pp. 483 - 489
DOI: 10.4149/km_2016_6_483

Abstract
Proof stress Rp0.2 of dual-phase α + β structured Mg-Li and Mg-Li-Zn alloys has been inspected in terms of the strengthening contributions of α- and β-phases. The alloys studied with variable fraction of α- and β-phases have been subjected to compression straining tests, microhardness measurements and structural analysis by EDX and XRD. Alloying with 1.5 wt.% Zn results in the hardening of both α- and β-phases which however exhibit different hardening responses due to different Zn enrichment. The rule of mixture has been used to interprete Rp0.2 values by taking into account the fraction of α and β phases and their strength level represented by their microhardness. Compression stress-strain curves indicate that work hardening of alloys studied depends considerably on the fraction of α-phase and is higher for Zn containing alloys.

Key words
Mg-Li, Mg-Li-Zn, dual-phase alloy, solution hardening, ageing, work hardening

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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