Controlling the interface reaction in alumina reinforced aluminium composites

Lloyd, D. J.; Jin, I.; Weatherly, G. C.

doi:10.1016/0956-716x(94)90006-x

Cited by 28 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The interfacial microstructure in magnesium-based MMCs is different from that in aluminum-based MMCs due to the high reactivity of magnesium [23]. However, comparing with aluminum-based MMCs, few efforts have been made to study the interfacial microstructure in magnesium-based MMCs.…”

Section: Introductionmentioning

confidence: 96%

Microstructure and interface characterization of a cast Mg2B2O5 whisker reinforced AZ91D magnesium alloy composite

Chen

Jin

Schumacher

et al. 2010

Composites Science and Technology

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 96%

Microstructure and interface characterization of a cast Mg2B2O5 whisker reinforced AZ91D magnesium alloy composite

Chen

Jin

Schumacher

et al. 2010

Composites Science and Technology

View full text Add to dashboard Cite

“…FOR the past many years, the different interfacial reaction phases forming in metal matrix composites (MMCs) such as Al 2 O 3 , MgAl 2 O 4 , and MgO in Al/Al 2 O 3 , [1][2][3][4][5][6][7][8][9][10][11][12] Al/oxidized SiC, [13][14][15][16][17] and Al/SiO 2 [21][22][23][24][25] are widely studied. These interfacial products or fine hard ceramic particles improve the wetting and prevent the degradation of reinforcement by direct reactions.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics and Kinetics of the Formation of Al2O3/ MgAl2O4/MgO in Al-Silica Metal Matrix Composite

Sreekumar

Ravi

Pillai

et al. 2008

Metall Mater Trans A

View full text Add to dashboard Cite

The formation of Al 2 O 3 , MgAl 2 O 4 , and MgO has been widely studied in different Al base metal matrix composites, but the studies on thermodynamic aspects of the Al 2 O 3 / MgAl 2 O 4 /MgO phase equilibria have been limited to few systems such as Al/Al 2 O 3 and Al/SiC. The present study analyzes the Al 2 O 3 /MgAl 2 O 4 and MgAl 2 O 4 /MgO equilibria with respect to the temperature and the Mg content in Al/SiO 2 system using an extended Miedema model. There is a linear and parabolic variation in Mg with respect to the temperature for MgAl 2 O 4 /MgO and Al 2 O 3 /MgAl 2 O 4 equilibria, respectively, and the influence of Si and Cu in the two equilibria is not appreciable. The experimental verification has been limited to MgAl 2 O 4 /MgO equilibria due to the high Mg content ( ‡0.5 wt pct) required for composite processing. The study has been carried out on two varieties of Al/SiO 2 composites, i.e., Al/Silica gel and Al/Micro silica processed by liquid metallurgy route (stir casting route). MgO is found to be more stable compared to MgAl 2 O 4 at Mg levels ‡5 and 1 wt pct in Al/Silica gel and Al/Micro silica composites, respectively, at 1073 K. MgO is also found to be more stable at lower Mg content (3 wt pct) in Al/Silica gel composite with decreasing particle size of silica gel from 180 micron to submicron and nanolevels. The MgO to MgAl 2 O 4 transformation has taken place through a series of transition phases influenced by the different thermodynamic and kinetic parameters such as holding temperature, Mg concentration in the alloy, holding time, and silica particle size.

show abstract

“…However, alumina in the nitrided nanocoating is unstable in aluminum alloys containing magnesium. Thermodynamically, the MgAl 2 O 4 reaction is favored at low Mg content ( < 4 wt.%) [9][10][11], and the interfacial reaction [2] can occur:…”

Section: Resultsmentioning

confidence: 99%

Controlling the interface reaction in Al18B4O33w/AC8A composite by nitrided nano-coating

Rao

2004

Materials Letters

View full text Add to dashboard Cite

Controlling the interface reaction in alumina reinforced aluminium composites

Cited by 28 publications

References 4 publications

Microstructure and interface characterization of a cast Mg2B2O5 whisker reinforced AZ91D magnesium alloy composite

Microstructure and interface characterization of a cast Mg2B2O5 whisker reinforced AZ91D magnesium alloy composite

Thermodynamics and Kinetics of the Formation of Al2O3/ MgAl2O4/MgO in Al-Silica Metal Matrix Composite

Controlling the interface reaction in Al18B4O33w/AC8A composite by nitrided nano-coating

Contact Info

Product

Resources

About