Microstructure and mechanical properties of extruded Mg-1Ca-1Zn-0.6Zr alloy

J. Geng; J. F. Nie

doi:10.1016/j.msea.2015.12.004

Microstructure and mechanical properties of extruded Mg-1Ca-1Zn-0.6Zr alloy

J. Geng, J. F. Nie

Materials Science & Engineering

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

32 Citations (Scopus)

Abstract

The microstructure and tensile property of extruded Mg-1Ca-1Zn-0.6Zr alloy have been examined by means of electron backscattered diffraction, scanning and transmission electron microscopy. A fine microstructure and a typical basal texture are obtained in the extruded alloy which exhibits a yield strength as high as 306MPa along with a moderate elongation ~11%. The refined as-extruded microstructure is a result of the combination of dynamic recrystallisation and the Zener pinning effect induced by the fine precipitates. Both discontinuous and continuous dynamic recrystallisation are found to be operative in this study. Under tensile stress, cracks nucleate and propagate in the large Mg₂Ca(Zn) particles which are formed during the solidification of casting and retained after extrusion.

Original language	English
Pages (from-to)	27-34
Number of pages	8
Journal	Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	653
DOIs	https://doi.org/10.1016/j.msea.2015.12.004
Publication status	Published - 20 Jan 2016

Keywords

Dynamic recrystallisation
Extrusion
Magnesium alloys
Microstructure
Precipitates

Access to Document

10.1016/j.msea.2015.12.004Licence: Unspecified

Cite this

@article{eee8c7d0e7694df7b82e831ad9dbb439,

title = "Microstructure and mechanical properties of extruded Mg-1Ca-1Zn-0.6Zr alloy",

abstract = "The microstructure and tensile property of extruded Mg-1Ca-1Zn-0.6Zr alloy have been examined by means of electron backscattered diffraction, scanning and transmission electron microscopy. A fine microstructure and a typical basal texture are obtained in the extruded alloy which exhibits a yield strength as high as 306MPa along with a moderate elongation ~11%. The refined as-extruded microstructure is a result of the combination of dynamic recrystallisation and the Zener pinning effect induced by the fine precipitates. Both discontinuous and continuous dynamic recrystallisation are found to be operative in this study. Under tensile stress, cracks nucleate and propagate in the large Mg2Ca(Zn) particles which are formed during the solidification of casting and retained after extrusion.",

keywords = "Dynamic recrystallisation, Extrusion, Magnesium alloys, Microstructure, Precipitates",

author = "J. Geng and Nie, {J. F.}",

year = "2016",

month = jan,

day = "20",

doi = "10.1016/j.msea.2015.12.004",

language = "English",

volume = "653",

pages = "27--34",

journal = "Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

publisher = "Elsevier",

}

TY - JOUR

T1 - Microstructure and mechanical properties of extruded Mg-1Ca-1Zn-0.6Zr alloy

AU - Geng, J.

AU - Nie, J. F.

PY - 2016/1/20

Y1 - 2016/1/20

N2 - The microstructure and tensile property of extruded Mg-1Ca-1Zn-0.6Zr alloy have been examined by means of electron backscattered diffraction, scanning and transmission electron microscopy. A fine microstructure and a typical basal texture are obtained in the extruded alloy which exhibits a yield strength as high as 306MPa along with a moderate elongation ~11%. The refined as-extruded microstructure is a result of the combination of dynamic recrystallisation and the Zener pinning effect induced by the fine precipitates. Both discontinuous and continuous dynamic recrystallisation are found to be operative in this study. Under tensile stress, cracks nucleate and propagate in the large Mg2Ca(Zn) particles which are formed during the solidification of casting and retained after extrusion.

AB - The microstructure and tensile property of extruded Mg-1Ca-1Zn-0.6Zr alloy have been examined by means of electron backscattered diffraction, scanning and transmission electron microscopy. A fine microstructure and a typical basal texture are obtained in the extruded alloy which exhibits a yield strength as high as 306MPa along with a moderate elongation ~11%. The refined as-extruded microstructure is a result of the combination of dynamic recrystallisation and the Zener pinning effect induced by the fine precipitates. Both discontinuous and continuous dynamic recrystallisation are found to be operative in this study. Under tensile stress, cracks nucleate and propagate in the large Mg2Ca(Zn) particles which are formed during the solidification of casting and retained after extrusion.

KW - Dynamic recrystallisation

KW - Extrusion

KW - Magnesium alloys

KW - Microstructure

KW - Precipitates

UR - http://www.scopus.com/inward/record.url?scp=84949921785&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2015.12.004

DO - 10.1016/j.msea.2015.12.004

M3 - Article

AN - SCOPUS:84949921785

SN - 0921-5093

VL - 653

SP - 27

EP - 34

JO - Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Microstructure and mechanical properties of extruded Mg-1Ca-1Zn-0.6Zr alloy

Abstract

Keywords

Access to Document

Other files and links

Monash Centre for Electron Microscopy (MCEM)

Cite this

Microstructure and mechanical properties of extruded Mg-1Ca-1Zn-0.6Zr alloy

Abstract

Keywords

Access to Document

Other files and links

Equipment

Monash Centre for Electron Microscopy (MCEM)

Cite this