Effect of 100°C heating on further ductility improvement of friction stir processed AZ31 magnesium alloy

Hsin Wei Lee, Truan-Sheng Lui, Li Hui Chen

Research output: Contribution to journalArticle

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Abstract

Friction stir processed (FSPed) AZ31 Mg alloy with fine grains was deformed in tension at room temperature (RT) and 100°CC to be compared with the same alloy in the extruded condition with coarse grains. Results indicate that texture affects the deformation behavior of AZ31 alloy more than grain refinement does. The work hardening rate of the FSPed alloy shows a prolonged ascending stage at RT and a plateau stage at 100°CC, while that of the extruded alloy keeps dropping rapidly. The above discrepancy between the tensile properties of the two test materials arises since basal slip and f10-12g tension twin of low critical resolved shear stress are favored by the FSPed texture but not by the extruded texture. 100°CC heating allows basal slip and f10-12g tension twin to contribute significant improvement to tensile ductility in the FSPed alloy, but hastens the instability in plastic strain of the extruded alloy. The work hardening characteristics and deformation properties of the FSPed specimen in tension at RT and 100°CC will be compared further in this paper to examine the different tensile behaviors at these two temperatures.

Original languageEnglish
Pages (from-to)1529-1535
Number of pages7
JournalMaterials Transactions
Volume53
Issue number8
DOIs
Publication statusPublished - 2012 Oct 5

Fingerprint

magnesium alloys
Magnesium alloys
ductility
Ductility
friction
Friction
Heating
heating
Textures
work hardening
textures
Strain hardening
room temperature
slip
Temperature
Grain refinement
materials tests
critical loading
Tensile properties
tensile properties

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

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title = "Effect of 100°C heating on further ductility improvement of friction stir processed AZ31 magnesium alloy",
abstract = "Friction stir processed (FSPed) AZ31 Mg alloy with fine grains was deformed in tension at room temperature (RT) and 100°CC to be compared with the same alloy in the extruded condition with coarse grains. Results indicate that texture affects the deformation behavior of AZ31 alloy more than grain refinement does. The work hardening rate of the FSPed alloy shows a prolonged ascending stage at RT and a plateau stage at 100°CC, while that of the extruded alloy keeps dropping rapidly. The above discrepancy between the tensile properties of the two test materials arises since basal slip and f10-12g tension twin of low critical resolved shear stress are favored by the FSPed texture but not by the extruded texture. 100°CC heating allows basal slip and f10-12g tension twin to contribute significant improvement to tensile ductility in the FSPed alloy, but hastens the instability in plastic strain of the extruded alloy. The work hardening characteristics and deformation properties of the FSPed specimen in tension at RT and 100°CC will be compared further in this paper to examine the different tensile behaviors at these two temperatures.",
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Effect of 100°C heating on further ductility improvement of friction stir processed AZ31 magnesium alloy. / Lee, Hsin Wei; Lui, Truan-Sheng; Chen, Li Hui.

In: Materials Transactions, Vol. 53, No. 8, 05.10.2012, p. 1529-1535.

Research output: Contribution to journalArticle

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N2 - Friction stir processed (FSPed) AZ31 Mg alloy with fine grains was deformed in tension at room temperature (RT) and 100°CC to be compared with the same alloy in the extruded condition with coarse grains. Results indicate that texture affects the deformation behavior of AZ31 alloy more than grain refinement does. The work hardening rate of the FSPed alloy shows a prolonged ascending stage at RT and a plateau stage at 100°CC, while that of the extruded alloy keeps dropping rapidly. The above discrepancy between the tensile properties of the two test materials arises since basal slip and f10-12g tension twin of low critical resolved shear stress are favored by the FSPed texture but not by the extruded texture. 100°CC heating allows basal slip and f10-12g tension twin to contribute significant improvement to tensile ductility in the FSPed alloy, but hastens the instability in plastic strain of the extruded alloy. The work hardening characteristics and deformation properties of the FSPed specimen in tension at RT and 100°CC will be compared further in this paper to examine the different tensile behaviors at these two temperatures.

AB - Friction stir processed (FSPed) AZ31 Mg alloy with fine grains was deformed in tension at room temperature (RT) and 100°CC to be compared with the same alloy in the extruded condition with coarse grains. Results indicate that texture affects the deformation behavior of AZ31 alloy more than grain refinement does. The work hardening rate of the FSPed alloy shows a prolonged ascending stage at RT and a plateau stage at 100°CC, while that of the extruded alloy keeps dropping rapidly. The above discrepancy between the tensile properties of the two test materials arises since basal slip and f10-12g tension twin of low critical resolved shear stress are favored by the FSPed texture but not by the extruded texture. 100°CC heating allows basal slip and f10-12g tension twin to contribute significant improvement to tensile ductility in the FSPed alloy, but hastens the instability in plastic strain of the extruded alloy. The work hardening characteristics and deformation properties of the FSPed specimen in tension at RT and 100°CC will be compared further in this paper to examine the different tensile behaviors at these two temperatures.

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