Materials Transactions Online

Materials Transactions, Vol.58 No.04 (2017) pp.587-591
© 2017 The Japan Institute of Metals and Materials

Activation Stress for Slip Systems of Pure Magnesium Single Crystals in Pure Shear Test

Kazutaka Fukuda1, Yuta Koyanagi1, Masayuki Tsushida2, Hiromoto Kitahara3, Tsuyoshi Mayama4 and Shinji Ando5

1Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
2Faculty of Engineering, Kumamoto University, Kumamoto 860-8555, Japan
3Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-8555, Japan
4Priority Organization for Innovation and Excellence, Kumamoto University, Kumamoto 860-8555, Japan
5Magnesium Research Center, Kumamoto University, Kumamoto 860-8555, Japan

With a hexagonal close packed structure, magnesium has many slip systems. Pure shear tests were carried out to evaluate their critical resolved shear stresses (CRSS). As a result, the CRSS for the basal slip was 0.7 MPa, and it was close to conventional values. When the shear stress of 40 MPa was applied in parallel to the prismatic plane, the $\{10\bar{1}2\}$ twin deformation occurred only, and the prismatic slip deformation did not occur.

This Paper was Originally Published in Japanese in J. Japan Inst. Met. Mater. 80 (2016) 334-339.

[doi:10.2320/matertrans.M2016402]

(Received 2016/11/11; Accepted 2017/01/11; Published 2017/03/25)

Keywords: magnesium single crystal, basal slip, prismatic slip, twin, CRSS (critical resolved shear stresses)

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