Deformation of Ag/1.2 at.% Mg

K. C. Goretta; J. L. Routbort; R. L. Thayer; J. P. Carroll; J. Wolfenstine; J. Kessler; J. Schwartz

doi:10.1016/0921-4534(96)00298-5

Deformation of Ag/1.2 at.% Mg

K. C. Goretta, J. L. Routbort, R. L. Thayer, J. P. Carroll, J. Wolfenstine, J. Kessler, J. Schwartz

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Abstract

Mechanical properties of Ag/1.2 at.% Mg were measured at room temperature in air and at 900°C in Ar or O₂. Exposure to O₂ at 900°C induced formation of MgO precipitates, which hardened the material and decreased its ductility substantially at both temperatures. At room temperature, oxidation increased the yield strength by a factor of ∼ 8 and the stiffness by ∼ 16%. At 900°C and strain rates of 3 x 10^-6 to 10^-4 s^-1, deformation was strongly dependent on atmosphere: in Ar, the alloy deformed by dislocation motion and underwent dynamic recrystallization; in O₂, the yield stress increased by a factor of ∼ 10, but the specimens fractured after limited plasticity.

Original language	English (US)
Pages (from-to)	201-206
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	265
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(96)00298-5
State	Published - Jul 10 1996

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(96)00298-5

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title = "Deformation of Ag/1.2 at.% Mg",

abstract = "Mechanical properties of Ag/1.2 at.% Mg were measured at room temperature in air and at 900°C in Ar or O2. Exposure to O2 at 900°C induced formation of MgO precipitates, which hardened the material and decreased its ductility substantially at both temperatures. At room temperature, oxidation increased the yield strength by a factor of ∼ 8 and the stiffness by ∼ 16%. At 900°C and strain rates of 3 x 10-6 to 10-4 s-1, deformation was strongly dependent on atmosphere: in Ar, the alloy deformed by dislocation motion and underwent dynamic recrystallization; in O2, the yield stress increased by a factor of ∼ 10, but the specimens fractured after limited plasticity.",

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T1 - Deformation of Ag/1.2 at.% Mg

AU - Goretta, K. C.

AU - Routbort, J. L.

AU - Thayer, R. L.

AU - Carroll, J. P.

AU - Wolfenstine, J.

AU - Kessler, J.

AU - Schwartz, J.

PY - 1996/7/10

Y1 - 1996/7/10

N2 - Mechanical properties of Ag/1.2 at.% Mg were measured at room temperature in air and at 900°C in Ar or O2. Exposure to O2 at 900°C induced formation of MgO precipitates, which hardened the material and decreased its ductility substantially at both temperatures. At room temperature, oxidation increased the yield strength by a factor of ∼ 8 and the stiffness by ∼ 16%. At 900°C and strain rates of 3 x 10-6 to 10-4 s-1, deformation was strongly dependent on atmosphere: in Ar, the alloy deformed by dislocation motion and underwent dynamic recrystallization; in O2, the yield stress increased by a factor of ∼ 10, but the specimens fractured after limited plasticity.

AB - Mechanical properties of Ag/1.2 at.% Mg were measured at room temperature in air and at 900°C in Ar or O2. Exposure to O2 at 900°C induced formation of MgO precipitates, which hardened the material and decreased its ductility substantially at both temperatures. At room temperature, oxidation increased the yield strength by a factor of ∼ 8 and the stiffness by ∼ 16%. At 900°C and strain rates of 3 x 10-6 to 10-4 s-1, deformation was strongly dependent on atmosphere: in Ar, the alloy deformed by dislocation motion and underwent dynamic recrystallization; in O2, the yield stress increased by a factor of ∼ 10, but the specimens fractured after limited plasticity.

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Deformation of Ag/1.2 at.% Mg

Abstract

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