The Influence of Al Content and Thickness on the Microstructure and Tensile Properties in High-Pressure Die Cast Magnesium Alloys

Deda, Erin; Berman, Tracy D.; Allison, J.

doi:10.1007/s11661-017-3958-4

Cited by 18 publications

(2 citation statements)

References 59 publications

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“…parameter of a ¼ 1.054 nm. The incident beam direction is [1][2][3][4][5][6][7][8][9][10]. In Figure 8c, the diffraction spots have apparent fivefold symmetry, which means that the phase is an icosahedral quasi-crystalline phase.…”

Section: Effect Of Cooling Rate On the Dendrite Microstructurementioning

confidence: 99%

“…Moreover, the new characteristic microstructures have impacts on the plasticity, strength, creep resistance, and corrosion resistance of alloys. [5][6][7] In recent years, studies have been conducted on the microstructure of magnesium alloys under subrapid solidification conditions. The ZM61(Mg-6Zn-1Mn) alloy solidified at a cooling rate of 2.5 Â 10 2 C s À1 showed a significantly refined grain size and improved comprehensive mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg–6Al–4Zn–1.2Sn Magnesium Alloy

Cui

Luo

et al. 2020

Adv Eng Mater

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The evolution of the microstructure and microsegregation in a new type of Mg–6Al–4Zn–1.2Sn (wt%) cast magnesium alloy solidified at cooling rates from 4.5 × 101 °C s−1 to 2.3 × 103 °C s−1 is investigated. The results indicate that the secondary dendrite arm spacing and the average grain sizes decrease from 14.3 to 2.9 μm and from 187 to 78 μm, respectively, as the cooling rate increases from 4.5 × 101 °C s−1 to 2.3 × 103 °C s−1. The relationship between the secondary dendrite arm spacing (λ2) and cooling rate (R) is fitted as λ2 = 69.7 × R−0.42. When the alloy solidifies in the range of cooling rates, a new quasi‐crystalline I phase is formed due to faster solidification. The microsegregation ratios of Al, Zn, and Sn elements decrease significantly with the increase in cooling rate. Compared with the specimen solidified at 4.5 × 101 °C s−1, the microsegregation ratios of Al, Zn, and Sn of that solidified at a cooling rate of 2.3 × 103 °C s−1 decrease by 37.4%, 45.7%, and 31.6%, respectively.

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