TEM observation of interfaces between particles in Al-Mg alloy powder compacts prepared by pulse electric current sintering

Guoqiang Xie; Osamu Ohashi; Norio Yamaguchi; Minghui Song; Kazuo Furuya; Tetsuji Noda

doi:10.2320/matertrans.43.2177

TEM observation of interfaces between particles in Al-Mg alloy powder compacts prepared by pulse electric current sintering

Guoqiang Xie, Osamu Ohashi, Norio Yamaguchi, Minghui Song, Kazuo Furuya, Tetsuji Noda

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

15 Citations (Scopus)

Abstract

Aluminum-Magnesium (Al-Mg) alloys powders with various amounts of Mg addition were sintered using the pulse electric current sintering (PECS) process. The behavior of Mg in the surface oxide film and the effect of Mg amounts on characters of the interfaces between Al-Mg alloys powder particles were investigated using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results showed that there were interfaces of direct metal/metal bonding and metal/oxide layer/metal bonding for all Al-Mg alloys powders compacts. In pure Al powder compacts, the oxide layer in the interface was amorphous alumina. And precipitates were observed in the bonding interface for the alloys powders compacts with Mg addition. The amounts of the precipitates increased, and the compositions of the precipitates changed with an increase in Mg amount in the alloys powders: MgAl₂O₄ for Al-0.3Mg, MgAl₂O₄ + MgO for Al-1.0Mg, and MgO for Al-2.5, 10Mg alloys powders compacts.

Original language	English
Pages (from-to)	2177-2180
Number of pages	4
Journal	Materials Transactions
Volume	43
Issue number	9
DOIs	https://doi.org/10.2320/matertrans.43.2177
Publication status	Published - 2002 Sep

Keywords

Aluminum-magnesium alloys pow-der compact
Interface
Precipitates
Pulse electric current sintering
Transmission electron microscopy

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "Aluminum-Magnesium (Al-Mg) alloys powders with various amounts of Mg addition were sintered using the pulse electric current sintering (PECS) process. The behavior of Mg in the surface oxide film and the effect of Mg amounts on characters of the interfaces between Al-Mg alloys powder particles were investigated using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results showed that there were interfaces of direct metal/metal bonding and metal/oxide layer/metal bonding for all Al-Mg alloys powders compacts. In pure Al powder compacts, the oxide layer in the interface was amorphous alumina. And precipitates were observed in the bonding interface for the alloys powders compacts with Mg addition. The amounts of the precipitates increased, and the compositions of the precipitates changed with an increase in Mg amount in the alloys powders: MgAl2O4 for Al-0.3Mg, MgAl2O4 + MgO for Al-1.0Mg, and MgO for Al-2.5, 10Mg alloys powders compacts.",

keywords = "Aluminum-magnesium alloys pow-der compact, Interface, Precipitates, Pulse electric current sintering, Transmission electron microscopy",

author = "Guoqiang Xie and Osamu Ohashi and Norio Yamaguchi and Minghui Song and Kazuo Furuya and Tetsuji Noda",

year = "2002",

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doi = "10.2320/matertrans.43.2177",

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T1 - TEM observation of interfaces between particles in Al-Mg alloy powder compacts prepared by pulse electric current sintering

AU - Xie, Guoqiang

AU - Ohashi, Osamu

AU - Yamaguchi, Norio

AU - Song, Minghui

AU - Furuya, Kazuo

AU - Noda, Tetsuji

PY - 2002/9

Y1 - 2002/9

N2 - Aluminum-Magnesium (Al-Mg) alloys powders with various amounts of Mg addition were sintered using the pulse electric current sintering (PECS) process. The behavior of Mg in the surface oxide film and the effect of Mg amounts on characters of the interfaces between Al-Mg alloys powder particles were investigated using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results showed that there were interfaces of direct metal/metal bonding and metal/oxide layer/metal bonding for all Al-Mg alloys powders compacts. In pure Al powder compacts, the oxide layer in the interface was amorphous alumina. And precipitates were observed in the bonding interface for the alloys powders compacts with Mg addition. The amounts of the precipitates increased, and the compositions of the precipitates changed with an increase in Mg amount in the alloys powders: MgAl2O4 for Al-0.3Mg, MgAl2O4 + MgO for Al-1.0Mg, and MgO for Al-2.5, 10Mg alloys powders compacts.

AB - Aluminum-Magnesium (Al-Mg) alloys powders with various amounts of Mg addition were sintered using the pulse electric current sintering (PECS) process. The behavior of Mg in the surface oxide film and the effect of Mg amounts on characters of the interfaces between Al-Mg alloys powder particles were investigated using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results showed that there were interfaces of direct metal/metal bonding and metal/oxide layer/metal bonding for all Al-Mg alloys powders compacts. In pure Al powder compacts, the oxide layer in the interface was amorphous alumina. And precipitates were observed in the bonding interface for the alloys powders compacts with Mg addition. The amounts of the precipitates increased, and the compositions of the precipitates changed with an increase in Mg amount in the alloys powders: MgAl2O4 for Al-0.3Mg, MgAl2O4 + MgO for Al-1.0Mg, and MgO for Al-2.5, 10Mg alloys powders compacts.

KW - Aluminum-magnesium alloys pow-der compact

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KW - Precipitates

KW - Pulse electric current sintering

KW - Transmission electron microscopy

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TEM observation of interfaces between particles in Al-Mg alloy powder compacts prepared by pulse electric current sintering

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Keywords

ASJC Scopus subject areas

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