The interrupted properties of an extruded Mg alloy

Shun Xu; Tianmo Liu; Jiejun He; Liwei Lu; Wen Zeng

doi:10.1016/j.matdes.2012.08.074

The interrupted properties of an extruded Mg alloy

Shun Xu, Tianmo Liu^*, Jiejun He, Liwei Lu, Wen Zeng

^*Corresponding author for this work

Chongqing University

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

9 Citations (Scopus)

Abstract

The current paper investigates the effect of {101 2} extension twins identified by using electron backscattered diffraction on the interrupted properties of an extruded Mg-3Al-1Zn (AZ31) alloy. Compressive and recompressive tests are conducted along extrusion direction (ED). It is discovered that the yield strength of recompression is enhanced due to grain refinement by {101 2} extension twins. The reinforcement effect of {101 2} extension twins on the yield stress of recompression is mainly reflected at the stage of small deformation while the improvement of yield strength is mainly attributed to the pile-up and intersection of dislocations as large deformation occurs. Furthermore, the yield stress of recompression is identical to the interrupted stress of precompression. In situ observation reveals that some twins generated in precompression could also become thicker in the following recompression.

Original language	English
Pages (from-to)	166-170
Number of pages	5
Journal	Materials and Design
Volume	45
DOIs	https://doi.org/10.1016/j.matdes.2012.08.074
Publication status	Published - Mar 2013
Externally published	Yes

Keywords

Compression
Magnesium alloy
Twinning
Yield stress

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10.1016/j.matdes.2012.08.074

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title = "The interrupted properties of an extruded Mg alloy",

abstract = "The current paper investigates the effect of {101 2} extension twins identified by using electron backscattered diffraction on the interrupted properties of an extruded Mg-3Al-1Zn (AZ31) alloy. Compressive and recompressive tests are conducted along extrusion direction (ED). It is discovered that the yield strength of recompression is enhanced due to grain refinement by {101 2} extension twins. The reinforcement effect of {101 2} extension twins on the yield stress of recompression is mainly reflected at the stage of small deformation while the improvement of yield strength is mainly attributed to the pile-up and intersection of dislocations as large deformation occurs. Furthermore, the yield stress of recompression is identical to the interrupted stress of precompression. In situ observation reveals that some twins generated in precompression could also become thicker in the following recompression.",

keywords = "Compression, Magnesium alloy, Twinning, Yield stress",

author = "Shun Xu and Tianmo Liu and Jiejun He and Liwei Lu and Wen Zeng",

year = "2013",

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doi = "10.1016/j.matdes.2012.08.074",

language = "English",

volume = "45",

pages = "166--170",

journal = "Materials and Design",

issn = "0264-1275",

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TY - JOUR

T1 - The interrupted properties of an extruded Mg alloy

AU - Xu, Shun

AU - Liu, Tianmo

AU - He, Jiejun

AU - Lu, Liwei

AU - Zeng, Wen

PY - 2013/3

Y1 - 2013/3

N2 - The current paper investigates the effect of {101 2} extension twins identified by using electron backscattered diffraction on the interrupted properties of an extruded Mg-3Al-1Zn (AZ31) alloy. Compressive and recompressive tests are conducted along extrusion direction (ED). It is discovered that the yield strength of recompression is enhanced due to grain refinement by {101 2} extension twins. The reinforcement effect of {101 2} extension twins on the yield stress of recompression is mainly reflected at the stage of small deformation while the improvement of yield strength is mainly attributed to the pile-up and intersection of dislocations as large deformation occurs. Furthermore, the yield stress of recompression is identical to the interrupted stress of precompression. In situ observation reveals that some twins generated in precompression could also become thicker in the following recompression.

AB - The current paper investigates the effect of {101 2} extension twins identified by using electron backscattered diffraction on the interrupted properties of an extruded Mg-3Al-1Zn (AZ31) alloy. Compressive and recompressive tests are conducted along extrusion direction (ED). It is discovered that the yield strength of recompression is enhanced due to grain refinement by {101 2} extension twins. The reinforcement effect of {101 2} extension twins on the yield stress of recompression is mainly reflected at the stage of small deformation while the improvement of yield strength is mainly attributed to the pile-up and intersection of dislocations as large deformation occurs. Furthermore, the yield stress of recompression is identical to the interrupted stress of precompression. In situ observation reveals that some twins generated in precompression could also become thicker in the following recompression.

KW - Compression

KW - Magnesium alloy

KW - Twinning

KW - Yield stress

UR - http://www.scopus.com/inward/record.url?scp=84867757201&partnerID=8YFLogxK

U2 - 10.1016/j.matdes.2012.08.074

DO - 10.1016/j.matdes.2012.08.074

M3 - Article

AN - SCOPUS:84867757201

SN - 0264-1275

VL - 45

SP - 166

EP - 170

JO - Materials and Design

JF - Materials and Design

ER -

The interrupted properties of an extruded Mg alloy

Abstract

Keywords

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