Deformation behaviour of Mg-0.7 wt.% Nd alloy

被引：33

作者：

Gärtnerová, V

Trojanová, Z

Jäger, A

Palcek, P

机构：

[1] Charles Univ, Dept Met Phys, CZ-12116 Prague 2, Czech Republic

[2] Univ Zilina, Dept Mat Engn, SK-01026 Zilina, Slovakia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 378卷 / 1-2期

关键词：

metals; casting; dislocations; point defects; strain;

D O I：

10.1016/j.jallcom.2003.11.172

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Deformation behaviour of the Mg-0.7 wt.% Nd alloy was investigated in tensile tests at elevated temperatures. Obtained local maximum in the temperature dependence of the yield stress as well as in the maximum stress indicates a presence of the dynamic strain ageing. The Portevin-Le Chatelier effect was observed at temperatures between 200 and 300degreesC. In the microstructure of deformed samples many twins were observed. The twinning mode of deformation decreases with increasing test temperature. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：180 / 183

页数：4

共 15 条

[1]

ADVESIAN MA, 1999, ASM HDB MAGNESIUM MA, P67

[2]

[Anonymous], 57504 WACD WRIGHT PA

[3] INFLUENCE OF SOLUTE MOBILITY ON DISLOCATION-MOTION .1. BASIC MODEL [J].

BALIK, J ;

LUKAC, P .

CZECHOSLOVAK JOURNAL OF PHYSICS, 1989, 39 (04) :447-457

[4] ACOUSTIC-EMISSION AND DEFORMATION BANDS IN AL-2.5-PERCENT MG AND CU-30-PERCENT ZN [J].

CACERES, CH ;

RODRIGUEZ, AH .

ACTA METALLURGICA, 1987, 35 (12) :2851-2864

[5] On the physics of the Portevin-LeChatelier effect .2. From microscopic to macroscopic behaviour [J].

Hahner, P .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 207 (02) :216-223

[6] On the physics of the Portevin-LeChatelier effect .1. The statistics of dynamic strain ageing [J].

Hahner, P .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 207 (02) :208-215

[7]

KING JF, 1990, ADV MAT TECHNOLOGY I, P12

[8]

KORBEL A, 1992, J MECH BEHAV MAT, V4, P61

[9] EVOLUTION OF DISLOCATION DENSITIES AND THE CRITICAL CONDITIONS FOR THE PORTEVIN-LECHATELIER EFFECT [J].

KUBIN, LP ;

ESTRIN, Y .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (05) :697-708

[10]

MATHIS K, 2001, P EUROMAT RIM 2001

← 1 2 →