Effect of ultrasonic on morphology of primary Mg2Si in in-situ Mg2Si/Al composite

Jia Tao Zhang; Yu Guang Zhao; Xiao Feng Xu; Xiao Bo Liu

doi:10.1016/S1003-6326(13)62806-X

Effect of ultrasonic on morphology of primary Mg₂Si in in-situ Mg₂Si/Al composite

Jia Tao Zhang, Yu Guang Zhao^*, Xiao Feng Xu, Xiao Bo Liu

^*Corresponding author for this work

Jilin University

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Effects of ultrasonic on morphologies of primary Mg₂Si crystals in in-situ Mg₂Si/Al composite were investigated by metallographic microscopy and field emission scanning electron microscopy. The results show that the mean grain size of primary Mg₂Si crystals is refined from 150 to 20 μm by high intensity ultrasonic, and the morphologies of primary Mg₂Si crystals are changed as well. Optical microscopy reveals that primary Mg₂Si crystals without ultrasonic vibration exhibit coarse particles with cavities, in which eutectic structures grow. However, primary Mg₂Si crystals with ultrasonic vibration appear fine grains without any cavity. Three-dimensional morphologies of primary Mg₂Si without ultrasonic vibration display octahedron and tetrakaidecahedron with hopper-like hole in the crystals. After ultrasonic vibration, primary Mg₂Si particles become solid crystals with rounded corners and edges.

Original language	English
Pages (from-to)	2852-2856
Number of pages	5
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	23
Issue number	10
DOIs	https://doi.org/10.1016/S1003-6326(13)62806-X
Publication status	Published - Oct 2013
Externally published	Yes

Keywords

ultrasonic MgSi/Al composite MgSi morphology grain refinement

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10.1016/S1003-6326(13)62806-X

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title = "Effect of ultrasonic on morphology of primary Mg2Si in in-situ Mg2Si/Al composite",

abstract = "Effects of ultrasonic on morphologies of primary Mg2Si crystals in in-situ Mg2Si/Al composite were investigated by metallographic microscopy and field emission scanning electron microscopy. The results show that the mean grain size of primary Mg2Si crystals is refined from 150 to 20 μm by high intensity ultrasonic, and the morphologies of primary Mg2Si crystals are changed as well. Optical microscopy reveals that primary Mg2Si crystals without ultrasonic vibration exhibit coarse particles with cavities, in which eutectic structures grow. However, primary Mg2Si crystals with ultrasonic vibration appear fine grains without any cavity. Three-dimensional morphologies of primary Mg2Si without ultrasonic vibration display octahedron and tetrakaidecahedron with hopper-like hole in the crystals. After ultrasonic vibration, primary Mg2Si particles become solid crystals with rounded corners and edges.",

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AU - Zhang, Jia Tao

AU - Zhao, Yu Guang

AU - Xu, Xiao Feng

AU - Liu, Xiao Bo

PY - 2013/10

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N2 - Effects of ultrasonic on morphologies of primary Mg2Si crystals in in-situ Mg2Si/Al composite were investigated by metallographic microscopy and field emission scanning electron microscopy. The results show that the mean grain size of primary Mg2Si crystals is refined from 150 to 20 μm by high intensity ultrasonic, and the morphologies of primary Mg2Si crystals are changed as well. Optical microscopy reveals that primary Mg2Si crystals without ultrasonic vibration exhibit coarse particles with cavities, in which eutectic structures grow. However, primary Mg2Si crystals with ultrasonic vibration appear fine grains without any cavity. Three-dimensional morphologies of primary Mg2Si without ultrasonic vibration display octahedron and tetrakaidecahedron with hopper-like hole in the crystals. After ultrasonic vibration, primary Mg2Si particles become solid crystals with rounded corners and edges.

AB - Effects of ultrasonic on morphologies of primary Mg2Si crystals in in-situ Mg2Si/Al composite were investigated by metallographic microscopy and field emission scanning electron microscopy. The results show that the mean grain size of primary Mg2Si crystals is refined from 150 to 20 μm by high intensity ultrasonic, and the morphologies of primary Mg2Si crystals are changed as well. Optical microscopy reveals that primary Mg2Si crystals without ultrasonic vibration exhibit coarse particles with cavities, in which eutectic structures grow. However, primary Mg2Si crystals with ultrasonic vibration appear fine grains without any cavity. Three-dimensional morphologies of primary Mg2Si without ultrasonic vibration display octahedron and tetrakaidecahedron with hopper-like hole in the crystals. After ultrasonic vibration, primary Mg2Si particles become solid crystals with rounded corners and edges.

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Effect of ultrasonic on morphology of primary Mg₂Si in in-situ Mg₂Si/Al composite

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