Deformation behavior of a wrought Mg-Zn-RE alloy at the elevated temperatures

Beomsoo Shin, Yule Kim, Donghyun Bae

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study has been investigated the deformation behavior of a hot-extruded Mg-Zn-RE (RE: rare earth elements) alloy containing Mg12(RE) particles at the elevated temperatures. The particles are intrinsically produced by breaking the eutectic structure of the alloy during the hot-extrusion process. The grain size of the extruded Mg-Zn-RE alloy developed via dynamic recrystallization is around 10 μm. Under the heat treatment at 200°C up to 48 hr, no change has been observed on the microstructure and mechanical properties due to the pinning effect of the thermally stable particles. Under the tensile test condition in the initial strain-rate range of 1 × 10-3s-1 and the temperature range up to 200°C, the alloy shows yield strength of 270 MPa and elongation to failure around 9% at room temperature and yield strength of 135 MPa at 200°. Furthermore, although the alloy contains large amount of the second phase particles around 15%, it shows excellent hot-workability possibly due to the presence of the thermally stable interface between the particles and the matrix.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Korean Institute of Metals and Materials
Volume46
Issue number1
Publication statusPublished - 2008 Jan 1

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Yield stress
Temperature
Dynamic Recrystallization
Tensile Test
Rare Earths
Dynamic recrystallization
Extrusion
Heat Treatment
Grain Size
Strain Rate
Elongation
Rare earth elements
Range of data
Eutectics
Mechanical Properties
Strain rate
Microstructure
Heat treatment
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Modelling and Simulation

Cite this

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abstract = "This study has been investigated the deformation behavior of a hot-extruded Mg-Zn-RE (RE: rare earth elements) alloy containing Mg12(RE) particles at the elevated temperatures. The particles are intrinsically produced by breaking the eutectic structure of the alloy during the hot-extrusion process. The grain size of the extruded Mg-Zn-RE alloy developed via dynamic recrystallization is around 10 μm. Under the heat treatment at 200°C up to 48 hr, no change has been observed on the microstructure and mechanical properties due to the pinning effect of the thermally stable particles. Under the tensile test condition in the initial strain-rate range of 1 × 10-3s-1 and the temperature range up to 200°C, the alloy shows yield strength of 270 MPa and elongation to failure around 9{\%} at room temperature and yield strength of 135 MPa at 200°. Furthermore, although the alloy contains large amount of the second phase particles around 15{\%}, it shows excellent hot-workability possibly due to the presence of the thermally stable interface between the particles and the matrix.",
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Deformation behavior of a wrought Mg-Zn-RE alloy at the elevated temperatures. / Shin, Beomsoo; Kim, Yule; Bae, Donghyun.

In: Journal of Korean Institute of Metals and Materials, Vol. 46, No. 1, 01.01.2008, p. 1-5.

Research output: Contribution to journalArticle

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