Remarkable age-hardening response and microstructural evolution of Mg–7Sn alloy

Tong, Lin; Jiang, Jing; Bi, Guangli; Xu, Zhigang; Li, Yuandong; Chen, Tijun; Zhang, Xiaoru; Fu, Wei; Fang, Daqing

doi:10.1016/j.jmrt.2023.03.087

Cited by 4 publications

(3 citation statements)

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“…It is interesting that a broad diffraction peak on (111) planes of Mg2Sn emerges at 240 h, which is probably caused by the formation of short-range order, in line with Henes's view [24]. Similar structure was found in Mg-9.8 wt.%Sn aged at 100 °C for 2056 h [25], which was confirmed to be GP zone [25]. The GP zone was lath-shaped with a habit plane parallel to the basal plane [25].…”

Section: Discussionsupporting

confidence: 74%

“…Similar structure was found in Mg-9.8 wt.%Sn aged at 100 °C for 2056 h [25], which was confirmed to be GP zone [25]. The GP zone was lath-shaped with a habit plane parallel to the basal plane [25].…”

Section: Discussionsupporting

confidence: 73%

“…Henes [24] was the first to find the metastable structure in Mg-Sn except for the investigative results from, whose study indicated that the precipitation was preceded by formation of short-range order in aged magnesium-tin alloys. The metastable phase was confirmed in and in Mg-9.8 wt.%Sn [25] and Mg-7 wt.%Sn [26] alloys. The aim of this paper is to further study the metastable precipitate as a basis for improving the age-hardening response of these alloys in the future.…”

Section: Introductionmentioning

confidence: 75%

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Characterization of Solid-Solution and Aging Process in Mg-5 wt.%Sn Alloy

Liu

2023

Metals

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Firstly, the properties and the microstructure evolution of solid-solution process of Mg-5 wt.%Sn were studied. From the motion analysis of resistivity and microhardness during solution treatment, the reasonable solution technology of Mg-5 wt.%Sn should be 12–16 h at 480 °C. After solution treatment at 480 °C for 16 h, the precipitating behavior in supersaturated solid solution. Mg-5 wt.%Sn alloy was investigated. In the aging process, it was observed that there were precipitated phases in the both grain and grain boundaries, and continuous inhomogeneous precipitation occurred along the grain boundaries, and continuous homogeneous precipitation happened in the grain. Transmission Electron Microscope (TEM) analysis indicated the plate- and lath-shaped precipitates within the grains and only the plate-shaped precipitates along the grain boundary. High-Resolution Electron Microscopy (HRTEM) studies have shown that metastable precipitates may occur during aging, coherently or semi-coherent with the matrix. Energy Dispersive Analysis by X-ray (EDAX) analysis showed that the Mg/Sn ratio was not actually constant, and the Sn content of the metastable phase was lower than that of the Mg2Sn equilibrium phase. X-ray diffraction (XRD) studies confirm the existence of this metastable phase, which is supposed to be GP zone and metastable Mg3Sn phase

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