Interpretation of the orientation relationship and habit plane orientation of the equilibrium β-phase in an Mg-Y-Nd alloy

被引：19

作者：

Zhang, M. ^{[1
]}

Zhang, W. -Z. ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China

来源：

SCRIPTA MATERIALIA | 2008年 / 59卷 / 07期

基金：

中国国家自然科学基金;

关键词：

magnesium; interface structure; simulation; orientation;

D O I：

10.1016/j.scriptamat.2008.05.032

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The habit plane of the equilibrium beta(Mg(14)Nd(2)y) phase in Mg-Y-Nd alloys was found to deviate from (1 -12)(beta)/(10-10) by about 3 degrees. The present work analyzed the interface structure and orientation relationship (OR) by CSL/DSC model and Delta g parallelism rule. For a better matching degree in the habit plane, the stepped interface containing a quasi-invariant line with a terrace of (1-12)(beta)/(10-10)(alpha) is preferred, which requires a small rotation of 0.24 degrees from Burgers OR. The simulation results are consistent with experimental observations. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：706 / 709

页数：4

共 18 条

[1]

Ahmed M., 1992, P MAGN ALL THEIR APP, P301

[2] Hardening precipitation in a Mg-4Y-3RE alloy [J].

Antion, C ;

Donnadieu, P ;

Perrard, F ;

Deschamps, A ;

Tassin, C ;

Pisch, A .

ACTA MATERIALIA, 2003, 51 (18) :5335-5348

[3] CSL DSC LATTICE MODEL FOR GENERAL CRYSTAL-CRYSTAL BOUNDARIES AND THEIR LINE DEFECTS [J].

BALLUFFI, RW ;

BROKMAN, A ;

KING, AH .

ACTA METALLURGICA, 1982, 30 (08) :1453-1470

[4]

BOLLMANN W, 1982, CRYSTAL LATTICES INT, P173

[5] STUDY OF INTERCRYSTALLINE BOUNDARIES IN TERMS OF COINCIDENCE LATTICE CONCEPT [J].

BONNET, R ;

DURAND, F .

PHILOSOPHICAL MAGAZINE, 1975, 32 (05) :997-1006

[6] 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

[7] Solid-solid interfaces and their role in phase transformations [J].

Christian, JW .

MATERIALS TRANSACTIONS JIM, 2000, 41 (07) :745-753

[8] AGE HARDENING IN A MG-9 WT PERCENT A1 ALLOY [J].

CLARK, JB .

ACTA METALLURGICA, 1968, 16 (02) :141-&

[9] HIGH-RESOLUTION ELECTRON-MICROSCOPY OBSERVATIONS OF THE INTERFACE STRUCTURE OF CONTINUOUS PRECIPITATES IN A MG-AL ALLOY AND INTERPRETATION WITH THE O-LATTICE THEORY [J].

DULY, D ;

ZHANG, WZ ;

AUDIER, M .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1995, 71 (01) :187-204

[10]

Lorimer G.W., 1986, P LOND C MAGN TECHN, P47

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