Tensile Deformation Behavior of Magnesium Single Crystals with Different Yttrium Concentrations

Tomohiro Hanada; Masayuki Tsushida; Hiromoto Kitahara; Shinji Ando

doi:10.4028/www.scientific.net/MSF.1016.516

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HomeMaterials Science ForumMaterials Science Forum Vol. 1016Tensile Deformation Behavior of Magnesium Single...

Tensile Deformation Behavior of Magnesium Single Crystals with Different Yttrium Concentrations

Abstract:

Tensile tests of Mg-Y single crystals with different yttrium concentrations: 0.07 and 0.3 at.% were carried out to investigate effects of yttrium on pyramidal <c+a> slip system. In Mg-0.07at%Y alloy single crystals, {11 2}< 23> second order pyramidal <c+a> slip was activated and yield stress increased, compared to pure Mg single crystals. On other hand, in Mg-0.3at%Y alloy single crystals, {10 1}< 23> first order pyramidal <c+a> slip was activated and yield stress increased, compared to Mg-0.07at%Y alloy single crystals. The change in slip system by yttrium addition would be caused by increasing critical resolved shear stress (CRSS) for second order pyramidal slip.

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Periodical:

Materials Science Forum (Volume 1016)

Pages:

516-521

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1016.516

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Online since:

January 2021

Authors:

Tomohiro Hanada*, Masayuki Tsushida, Hiromoto Kitahara, Shinji Ando

Keywords:

Critical Resolved Shear Stress, Dislocation, Mg-Y, Pyramidal Slip, Tensile Test, Twins, Yield Stress

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