Tensile properties of a few Mg-Li-Zn alloy thin sheets |
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| Authors: | H Takuda H Matsusaka S Kikuchi K Kubota |
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| Affiliation: | (1) Department of Energy Science and Technology, Kyoto University, Kyoto, 606-8501, Japan;(2) Department of Materials Science, The University of Shiga Prefecture, Hikone, 522-8533, Japan;(3) R&D Center, Mitsui Mining & Smelting Co. Ltd., Ageo, 362-0021, Japan |
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| Abstract: | The tensile properties of experimentally produced Mg-6Li-1Zn, Mg-9.5Li-1Zn and Mg-12Li-1Zn alloy thin sheets at room temperature are investigated in this study. Uniaxial tension tests are carried out for various strain rates between 1.4 × 10–5 and 8.3 × 10–2 s–1, and the microstructural and textural changes during the tests are examined. The Mg-6Li-1Zn sheet is composed mainly of the  (hcp) phase and inferior to the other sheets in ductility. The  (bcc) phase is dominant in the Mg-9.5Li-1Zn and Mg-12Li-1Zn sheets, and they have a considerable sensitivity to strain rate. It is observed that the grains are elongated with textural change mainly in the phase at low strain rates, and the Mg-9.5Li-1Zn and Mg-12Li-1Zn sheets have sufficiently high ductility at low strain rates. The Mg-9.5Li-1Zn sheet composed of ( + ) two phase is superior to the Mg-12Li-1Zn sheet of single phase in the tensile strength. |
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