Effect of Al addition on microstructure and mechanical properties of Mg−Zn−Sn−Mn alloy

Hou, Caihong; Ye, Zhisong; Qi, Fugang; Wang, Qing; Li, Lianhui; Ouyang, Xiaoping; Nie, Zhaogang

doi:10.1016/s1003-6326(21)65629-7

Cited by 24 publications

(3 citation statements)

References 44 publications

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“…The results show that the grain sizes decrease and then increase with the increase in Al element content, and the addition of Al elements can promote the formation of second phases such as Al 8 Mn 5 , Al 11 Mn 4 , Mg 32 (Al,Zn) 49 , Al 2 Mg 5 Zn 2 , and MgZn. However, in this study, the Al-Mn phases possess an Al 3 Mn 2 structure, which is not consistent with that reported in the literature [46][47][48][49]. And the combination of Mn and Zn would be changed for the Al addition.…”

Section: Introductioncontrasting

confidence: 95%

“…Secondly, it can be found that the α-Mn dispersoids disappear and are replaced by Al 3 Mn 2 particles. Ye, Hou, and Deng reported the Al 8 Mn 5 and Al 11 Mn 4 in the Mg-6Zn-4Sn-1Mn-xAl alloys [46][47][48][49]. However, no studies have been reported on the formation of the Al 3 Mn 2 phase in Mg-Zn-Sn-Mn-Al alloy.…”

Section: Discussionmentioning

confidence: 99%

“…Studies on the microstructure of Mg-6Zn-4Sn-1Mn-xAl (wt.%) alloys have been reported [46][47][48]. These studies focused on the second phase and properties of the extruded and aged states of the Mg-6Zn-4Sn-1Mn-xAl series alloys after homogenization heat treatment.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Microstructure of Mg-4Zn-4Sn-1Mn-xAl As-Cast Alloys

Liu,

Du,

Peng

et al. 2023

Materials

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In this study, the microstructure of the Mg-4Zn-4Sn-1Mn-xAl (x = 0, 0.3 wt.%, denoted as ZTM441 and ZTM441-0.3Al) as-cast alloys was investigated using scanning electron microscopy (SEM), focused-ion/electron-beam (FIB) micromachining, transmission electron microscopy (TEM), and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). The analysis results revealed that the microstructure of the ZTM441 and ZTM441-0.3Al as-cast alloys both mainly consist of the α-Mg matrix, skeleton-shaped MgZn2 eutectic texture, block-shaped Mg2Sn, and Zn/Sn-rich nanoscale precipitate bands along the grain boundary and the interdendrite. Nanoscale α-Mn dispersoids formed in the grain in the ZTM441 alloy, while no α-Mn formed in the ZTM441-0.3Al alloy instead of nanoscale Al3Mn2 particles. In the ZTM441 as-cast alloy, part of the Zn element is dissolved into the α-Mn phase, and part of the Mn element is dissolved into the MgZn2 phase, but in the ZTM441-0.3Al alloy, there are no such characteristics of mutual solubility. Zn and Mn elements are easy to combine in ZTM441 as-cast alloy, while Al and Mn are easy to combine in ZTM441-0.3Al as-cast alloy. The Mg-Zn phases have not only MgZn2-type crystal structure but also Mg4Zn7- and Mg149Zn-type crystal structure in the ZTM441-0.3Al as-cast alloy. The addition of Al changes the combination of Mn and Zn, promotes the formation of Al3Mn2, and the growth of the grain.

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Section: Introductioncontrasting

confidence: 95%