Temperature dependence of prismatic slip in a single-crystalline long-period stacking ordered Mg-Zn-Y alloy

被引：24

作者：

Takagi, Kosuke ^{[1
]}

Yamasaki, Michiaki ^{[1
]}

Mine, Yoji ^{[1
]}

Takashima, Kazuki ^{[1
]}

机构：

[1] Kumamoto Univ, Dept Mat Sci & Engn, Chuo Ku, Kumamoto 8608555, Japan

来源：

SCRIPTA MATERIALIA | 2020年 / 178卷

基金：

日本学术振兴会;

关键词：

Mechanical properties testing; Long-period stacking ordered structure; Magnesium alloys; Dislocation structure; Plastic deformation; KINK BAND FORMATION; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; NONBASAL SLIP; LPSO PHASE; 14H; MICROSTRUCTURE; PLASTICITY; STRENGTH; SYSTEMS;

D O I：

10.1016/j.scriptamat.2019.12.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 Mg85Zn6Y9. The room-temperature critical resolved shear stress (CRSS) for the prismatic slip was measured similar to 261 MPa, which was an order of magnitude higher than similar to 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 similar to 110 MPa at 673 K. The prismatic slips were promoted through cross-slip onto the basal plane over the transition temperature. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：498 / 502

页数：5

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