Characterization of intermetallics in Mg–Al–Sr AJ62 alloys

L’Éspérance, Gilles; Plamondon, Philippe; Kunst, Martin; Fischersworring‐Bunk, Andreas

doi:10.1016/j.intermet.2009.05.017

Cited by 34 publications

(16 citation statements)

References 8 publications

(14 reference statements)

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“…The formation of the Mg 9 Al 3 Sr ternary phase in AJ62 Mg alloys with a high Sr content was reported by L'Espérance et al [14]. It was found in as-cast alloys that also contained Mg, Mg 9 Al 3 Sr, and Al 4 Sr phases.…”

Section: Literature Reviewsupporting

confidence: 62%

“…This intermetallic compound has solubility from 39.3 to 47.3 at% Al at 400 ∘ C and could be associated with the stoichiometric Al 38 Mg 58 Sr 4 ternary compound reported by [1]. If the phase is associated with the Mg 9 Al 3 Sr ternary phase reported by [14] in the as-cast alloy, one should expect substantial extension of its solubility towards Mg at elevated temperatures.…”

Section: Discussionmentioning

confidence: 64%

“…It was found in as-cast alloys that also contained Mg, Mg 9 Al 3 Sr, and Al 4 Sr phases. They [14] reported that Mg 9 Al 3 Sr phase decomposes after the heat treatment of alloys. The authors associated this phase with the Mg 8 Al 2 Sr phase reported by Medraj et al [12].…”

Section: Literature Reviewmentioning

confidence: 99%

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Experimental Study of the Al-Mg-Sr Phase Diagram at 400°C

Kevorkov

Medraj

Aljarrah³

et al. 2014

Journal of Metallurgy

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The Al-Mg-Sr system is experimentally studied at 400 ∘ C using EPMA and XRD techniques. It was determined that the intermetallic phases in the Al-Mg-Sr system have a tendency to form extended substitutional solid solutions. Two ternary phases were found in this system. Solubility limits of binary and ternary phases were determined and the phase equilibria among phases were established. The isothermal section of the Al-Mg-Sr system at 400 ∘ C has been constructed using results of the phase analysis and experimental literature data.

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Section: Literature Reviewsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 64%

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Experimental Study of the Al-Mg-Sr Phase Diagram at 400°C

Kevorkov

Medraj

Aljarrah³

et al. 2014

Journal of Metallurgy

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show abstract

“…During annealing, this phase rejects its excess Mg and absorbs Al from its surrounding matrix to reach the stable Al 4 Sr stoichiometry [7,15,21]. The diffusion of Al atoms to the precipitates lowers the level of dissolved Al in a-Mg [15,21] and it directly affects the lattice resistance against dislocation motion [13,14]. Consequently, slip becomes easier and the dislocations are able to move in the active slip direction.…”

Section: Lattice Resistancementioning

confidence: 99%

“…Janz et al [20] have shown that the only ternary equilibrium precipitate in the Al-Mg-Sr system is s-Al 38 Mg 58 Sr 4 , which is seen in alloys containing high levels of Sr and all other ternary precipitates are non-equilibrium. It has been reported by L'Espérance et al [21] that the non-equilibrium Al-Mg-Sr precipitate rejects its excess Mg to the matrix and absorbs Al from the surroundings and decomposes to the equilibrium Mg-Al 4 Sr eutectic. This decomposition has also been seen during the hot deformation of a cast alloy by the authors [15].…”

Section: Introductionmentioning

confidence: 98%