Strength and failure of ultrafine grain and bimodal Al-Mg alloy at high temperatures

Andrew Magee; Leila Ladani

doi:10.1007/978-3-319-65136-1_48

Strength and failure of ultrafine grain and bimodal Al-Mg alloy at high temperatures

Research output: Contribution to journal › Conference article › peer-review

Abstract

Uniaxial tensile tests are conducted at room and high temperatures on a bimodal grain size Al-Mg alloy with an ultrafine grain matrix as the major constituent to evaluate the strength and failure mode of the material. The coarse grain ratio and anisotropy effects are also investigated as parameters that could influence the mechanical behavior. It was found that the strength of the material decreases rapidly with temperature such that at 473 K, it was somewhat weaker than a comparable conventional alloy. Dynamic recovery was observed and found to be dependent on coarse grain ratio. Strength anisotropy was found to be reduced with increasing temperature. No evidence of thermally or mechanically assisted grain growth were observed.

Original language	English (US)
Pages (from-to)	279-282
Number of pages	4
Journal	Minerals, Metals and Materials Series
Issue number	210869
DOIs	https://doi.org/10.1007/978-3-319-65136-1_48
State	Published - 2016
Externally published	Yes
Event	142nd Annual Meeting and Exhibition, TMS 2013 - San Antonio, United States Duration: Mar 3 2013 → Mar 7 2013

Keywords

Al-Mg alloy
Bimodal micro structure
Mechanical testing
Thermal effects

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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title = "Strength and failure of ultrafine grain and bimodal Al-Mg alloy at high temperatures",

abstract = "Uniaxial tensile tests are conducted at room and high temperatures on a bimodal grain size Al-Mg alloy with an ultrafine grain matrix as the major constituent to evaluate the strength and failure mode of the material. The coarse grain ratio and anisotropy effects are also investigated as parameters that could influence the mechanical behavior. It was found that the strength of the material decreases rapidly with temperature such that at 473 K, it was somewhat weaker than a comparable conventional alloy. Dynamic recovery was observed and found to be dependent on coarse grain ratio. Strength anisotropy was found to be reduced with increasing temperature. No evidence of thermally or mechanically assisted grain growth were observed.",

keywords = "Al-Mg alloy, Bimodal micro structure, Mechanical testing, Thermal effects",

author = "Andrew Magee and Leila Ladani",

year = "2016",

doi = "10.1007/978-3-319-65136-1_48",

language = "English (US)",

pages = "279--282",

journal = "Minerals, Metals and Materials Series",

issn = "2367-1181",

publisher = "Springer International Publishing AG",

number = "210869",

note = "142nd Annual Meeting and Exhibition, TMS 2013 ; Conference date: 03-03-2013 Through 07-03-2013",

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T1 - Strength and failure of ultrafine grain and bimodal Al-Mg alloy at high temperatures

AU - Magee, Andrew

AU - Ladani, Leila

PY - 2016

Y1 - 2016

N2 - Uniaxial tensile tests are conducted at room and high temperatures on a bimodal grain size Al-Mg alloy with an ultrafine grain matrix as the major constituent to evaluate the strength and failure mode of the material. The coarse grain ratio and anisotropy effects are also investigated as parameters that could influence the mechanical behavior. It was found that the strength of the material decreases rapidly with temperature such that at 473 K, it was somewhat weaker than a comparable conventional alloy. Dynamic recovery was observed and found to be dependent on coarse grain ratio. Strength anisotropy was found to be reduced with increasing temperature. No evidence of thermally or mechanically assisted grain growth were observed.

AB - Uniaxial tensile tests are conducted at room and high temperatures on a bimodal grain size Al-Mg alloy with an ultrafine grain matrix as the major constituent to evaluate the strength and failure mode of the material. The coarse grain ratio and anisotropy effects are also investigated as parameters that could influence the mechanical behavior. It was found that the strength of the material decreases rapidly with temperature such that at 473 K, it was somewhat weaker than a comparable conventional alloy. Dynamic recovery was observed and found to be dependent on coarse grain ratio. Strength anisotropy was found to be reduced with increasing temperature. No evidence of thermally or mechanically assisted grain growth were observed.

KW - Al-Mg alloy

KW - Bimodal micro structure

KW - Mechanical testing

KW - Thermal effects

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DO - 10.1007/978-3-319-65136-1_48

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EP - 282

JO - Minerals, Metals and Materials Series

JF - Minerals, Metals and Materials Series

SN - 2367-1181

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T2 - 142nd Annual Meeting and Exhibition, TMS 2013

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