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

被引：27

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

共 44 条

[21] Effect of Extrusion Parameters on Mechanical Properties of Mg97Zn1Y2 Alloys at Room and Elevated Temperatures [J].

Hirano, Masaaki ;

Yamasaki, Michiaki ;

Hagihara, Koji ;

Higashida, Kenji ;

Kawamura, Yoshihito .

MATERIALS TRANSACTIONS, 2010, 51 (09) :1640-1647

[22] DEFORMATION OF MAGNESIUM SINGLE CRYSTALS [J].

HIRSCH, PB ;

LALLY, JS .

PHILOSOPHICAL MAGAZINE, 1965, 12 (117) :595-+

[23]

Inoue A., 2013, MRS Symp Proc, V1516, P151, DOI [10.1557/opl.2012.1749, DOI 10.1557/OPL.2012.1749]

[24] Long period stacking structures observed inMg97Zn1Y2 alloy [J].

Itoi, T ;

Seimiya, T ;

Kawamura, Y ;

Hirohashi, M .

SCRIPTA MATERIALIA, 2004, 51 (02) :107-111

[25] DISLOCATION MULTIPLICATION IN LITHIUM FLUORIDE CRYSTALS [J].

JOHNSTON, WG ;

GILMAN, JJ .

JOURNAL OF APPLIED PHYSICS, 1960, 31 (04) :632-643

[26] Rapidly solidified powder metallurgy Mg97Zn1Y2Alloys with excellent tensile yield strength above 600 MPa [J].

Kawamura, Y ;

Hayashi, K ;

Inoue, A ;

Masumoto, T .

MATERIALS TRANSACTIONS, 2001, 42 (07) :1172-1176

[27] On the importance of sample compliance in uniaxial microtesting [J].

Kiener, D. ;

Grosinger, W. ;

Dehm, G. .

SCRIPTA MATERIALIA, 2009, 60 (03) :148-151

[28] Crystal structures of highly-ordered long-period stacking-ordered phases with 18R, 14H and 10H-type stacking sequences in the Mg-Zn-Y system [J].

Kishida, Kyosuke ;

Nagai, Kaito ;

Matsumoto, Akihide ;

Yasuhara, Akira ;

Inui, Haruyuki .

ACTA MATERIALIA, 2015, 99 :228-239

[29] THE NATURE OF WORK-HARDENING [J].

KOEHLER, JS .

PHYSICAL REVIEW, 1952, 86 (01) :52-59

[30]

Matsumoto R, 2013, MATER TRANS, V54, P686, DOI [10.2320/matertrans.MI201211, 10.2320/matertrans.M1201211]

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