Precipitation in Ai-Cu-Mg-Ag casting alloy

J. A. Taylor; B. A. Parker; I. J. Polmear

doi:10.1179/030634578790433341

Precipitation in Ai-Cu-Mg-Ag casting alloy

J. A. Taylor, B. A. Parker, I. J. Polmear

Materials Science & Engineering

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

117 Citations (Scopus)

Abstract

Castings made from AI-Cu-Mg-Ag alloys have a high response to hardening in the artificially aged condition. This effect is considered to arise because silver changes the ageing process occurring in the equivalent ternary AI-Cu-Mg alloy and promotes precipitation of thin plates of a monoclinic form of the phase θ(CuAl₂) on the (111) matrix planes. Replacing silver with cadmium also causes increased hardening, although the effect is less and arises from a refinement in the size of precipitates formed in the existing ageing process.

Original language	English
Pages (from-to)	478-482
Number of pages	5
Journal	Metal Science
Volume	12
Issue number	10
DOIs	https://doi.org/10.1179/030634578790433341
Publication status	Published - 1 Jan 1978

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abstract = "Castings made from AI-Cu-Mg-Ag alloys have a high response to hardening in the artificially aged condition. This effect is considered to arise because silver changes the ageing process occurring in the equivalent ternary AI-Cu-Mg alloy and promotes precipitation of thin plates of a monoclinic form of the phase θ(CuAl2) on the (111) matrix planes. Replacing silver with cadmium also causes increased hardening, although the effect is less and arises from a refinement in the size of precipitates formed in the existing ageing process.",

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N2 - Castings made from AI-Cu-Mg-Ag alloys have a high response to hardening in the artificially aged condition. This effect is considered to arise because silver changes the ageing process occurring in the equivalent ternary AI-Cu-Mg alloy and promotes precipitation of thin plates of a monoclinic form of the phase θ(CuAl2) on the (111) matrix planes. Replacing silver with cadmium also causes increased hardening, although the effect is less and arises from a refinement in the size of precipitates formed in the existing ageing process.

AB - Castings made from AI-Cu-Mg-Ag alloys have a high response to hardening in the artificially aged condition. This effect is considered to arise because silver changes the ageing process occurring in the equivalent ternary AI-Cu-Mg alloy and promotes precipitation of thin plates of a monoclinic form of the phase θ(CuAl2) on the (111) matrix planes. Replacing silver with cadmium also causes increased hardening, although the effect is less and arises from a refinement in the size of precipitates formed in the existing ageing process.

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Precipitation in Ai-Cu-Mg-Ag casting alloy

Abstract

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