Crystallography of the bcc/hcp transformation in a Mg-8Li alloy

被引：53

作者：

Kral, M. V.

Muddle, B. C.

Nie, J. F.

机构：

[1] Univ Canterbury, Dept Mech Engn, Christchurch 1, New Zealand

[2] Monash Univ, Dept Mat Engn, ARC Ctr Excellence Design Light Met, Clayton, Vic 3800, Australia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 460卷

关键词：

Mg-Li; crystallography; edge-to-edge; Moire plane; transmission electron microscopy;

D O I：

10.1016/j.msea.2007.01.102

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A magnesium-8 wt% lithium alloy was prepared to give a microstructure of hcp (alpha) and bcc (beta) phases, with the alpha phase appearing as plates in the beta matrix. A near Burgers OR was observed between the two phases, i.e., [0 0 0 1](alpha)//[0 1 1](beta), (1 1 0 0)(alpha)//(2 1 1)(beta). An additional similar to 0.5 degrees rotation of the bcc lattice around [0 0 0 1](alpha)//[0 1 1](beta) axis, as well as the alpha/beta interface orientation, were both predicted by a moire plane approach and observed experimentally. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：227 / 232

页数：6

共 19 条

[1]

[Anonymous], T ASM

[2] Influence of lithium on hcp magnesium alloys [J].

Bach, FW ;

Schaper, M ;

Jaschik, C .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :1037-1042

[3] On the process of transition of the cubic-body-centered modification into the hexagonal-close-packed modification of zirconium [J].

Burgers, WG .

PHYSICA, 1934, 1 :561-586

[4] On the transformation characteristics of LA141A (Mg-Li-Al) alloy [J].

Crawford, P ;

Barrosa, R ;

Mendez, J ;

Foyos, J ;

EsSaid, OS .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1996, 56 (1-4) :108-118

[5]

Cullity B., 1978, ELEMENTS XRAY DIFFRA

[6] ORIENTATION RELATIONSHIPS IN PRECIPITATION SYSTEMS [J].

DAHMEN, U .

ACTA METALLURGICA, 1982, 30 (01) :63-73

[7] COMPUTER MODELING OF PARTIALLY COHERENT BCC - HCP BOUNDARIES [J].

FURUHARA, T ;

AARONSON, HI .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (11) :2857-2872

[8] INTERPHASE BOUNDARY STRUCTURES OF INTRAGRANULAR PROEUTECTOID ALPHA-PLATES IN A HYPOEUTECTOID TI-CR ALLOY [J].

FURUHARA, T ;

HOWE, JM ;

AARONSON, HI .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (11) :2873-2886

[9] Development, processing and applications range of magnesium lithium alloys [J].

Haferkamp, H ;

Niemeyer, M ;

Boehm, R ;

Holzkamp, U ;

Jaschik, C ;

Kaese, V .

MAGNESIUM ALLOYS 2000, 2000, 350-3 :31-41

[10] Tensile properties and formability of Mg-Li alloys grain-refined by ECAE process [J].

Kamado, S ;

Ashie, T ;

Ohshima, Y ;

Kojima, Y .

MAGNESIUM ALLOYS 2000, 2000, 350-3 :55-62

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