Home Kovove Materialy-Metallic Materials 2016 Metallic Materials Vol. 54 (2016), no. 6, pp.483-489

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Metallic Materials Vol. 54 (2016), no. 6, pp.483-489

Title: Strengthening in dual-phase structured Mg-Li-Zn alloys
Author: S. KUDELA Jr., P. ŠVEC, O. BAJANA, Ľ. OROVČÍK, P. RANACHOWSKI, Z. RANACHOWSKI

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.

Keywords: Mg-Li, Mg-Li-Zn, dual-phase alloy, solution hardening, ageing, work hardening
Published online: 08-Dec-2016
Year: 2016, Volume: 54, Issue: 6 Page From: 483, Page To: 489
doi:10.4149/km_2016_6_483


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