Temperature dependence of prismatic slip in a single-crystalline long-period stacking ordered Mg–Zn–Y alloy. (15th March 2020)

• Record Type: Journal Article
• Authors: Takagi, Kosuke; Yamasaki, Michiaki; Mine, Yoji; Takashima, Kazuki
• Is Part Of: Scripta materialia. Number 178(2020)
• Page Start: 498
• Page End: 502
• Publication Date: 2020-03-15
• Subjects: Mechanical properties testing -- Long-period stacking ordered structure -- Magnesium alloys -- Dislocation structure -- Plastic deformation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.12.025
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Micro-double-shear tests were performed in the temperature range of 298–673 K to quantify the temperature dependence of prismatic slip in a long-period stacking ordered Mg85 Zn6 Y9 . The room-temperature critical resolved shear stress (CRSS) for the prismatic slip was measured ~261 MPa, which was an order of magnitude higher than ~28 MPa for the basal slip. Although the basal slip exhibited less temperature dependence of CRSS, the CRSS for the prismatic slip had a gradual transition over 523 K, decreasing to ~110 MPa at 673 K. The prismatic slips were promoted through cross-slip onto the basal plane over the transition temperature. Graphical abstract: Image, graphical abstract