The effect of erbium on the microstructure and mechanical properties of Al-Mg-Mn-Zr alloy

被引：157

作者：

Wen, S. P. ^{[1
]}

Xing, Z. B. ^{[1
]}

Huang, H. ^{[1
]}

Li, B. L. ^{[1
]}

Wang, W. ^{[1
]}

Nie, Z. R. ^{[1
]}

机构：

[1] Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100022, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 516卷 / 1-2期

基金：

国家高技术研究发展计划(863计划);

关键词：

Aluminum alloy; Erbium; Al3Er; Microstructure; Mechanical properties; ALUMINUM-ALLOYS; RARE-EARTH; SC ALLOYS; LATTICE DISLOCATIONS; GRAIN-BOUNDARIES; SCANDIUM; PRECIPITATION; NANOSTRUCTURE; REFINEMENT; EVOLUTION;

D O I：

10.1016/j.msea.2009.02.045

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influences of erbium (Er) on the microstructure and mechanical properties of Al-Mg-Mn-Zr alloys have been investigated. It has been found that about 0.2 wt.% Er can be dissolved in the matrix, excess Er atoms segregate at grain boundaries to form primary Al3Er. Addition of 0.4 wt.% Er refines the grain size of the as-cast alloy due to the formation of primary Al3Er. The solid solution decomposes to form a dispersion of secondary Al3Er, with facets parallel to {100} and {110} planes, during homogenization at 470 degrees C. The secondary Al3Er precipitates improve strength, especially the elevated temperature strength. The yield strength, at 150 degrees C, of the alloy with 0.2 wt% Er is 50% higher than that of the Er-free alloy. The recrystallization temperature of the alloy with 0.4 wt.% Er is about 25 degrees C higher than that of the alloy without addition of Er. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：42 / 49

页数：8

共 34 条

[1]

ANGERS LM, 1988, DISPERSION STRENGTHE, P35

[2] Complex precipitation pathways in multicomponent alloys [J].

Clouet, Emmanuel ;

Lae, Ludovic ;

Epicier, Thierry ;

Lefebvre, Williams ;

Nastar, Maylise ;

Deschamps, Alexis .

NATURE MATERIALS, 2006, 5 (06) :482-488

[3] Scientific principles of making an alloying addition of scandium to aluminium alloys [J].

Davydov, VG ;

Rostova, TD ;

Zakharov, VV ;

Filatov, YA ;

Yelagin, VI .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (01) :30-36

[4] New Al-Mg-Sc alloys [J].

Filatov, YA ;

Yelagin, VI ;

Zakharov, VV .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (01) :97-101

[5] Temporal evolution of the nanostructure of Al(Sc,Zr) alloys:: Part II-coarsening of Al3(Sc1-xZrx) precipitates [J].

Fuller, CB ;

Seldman, DN .

ACTA MATERIALIA, 2005, 53 (20) :5415-5428

[6] The effect of cooling rate on the morphology of primary Al3Se intermetallic particles in Al-Sc alloys [J].

Hyde, KB ;

Norman, AF ;

Prangnell, PB .

ACTA MATERIALIA, 2001, 49 (08) :1327-1337

[7] Strengthening mechanisms of an Al-Mg-Sc-Zr alloy [J].

Kendig, KL ;

Miracle, DB .

ACTA MATERIALIA, 2002, 50 (16) :4165-4175

[8] Criteria for developing castable, creep-resistant aluminum-based alloys - A review [J].

Knipling, KE ;

Dunand, DC ;

Seidman, DN .

ZEITSCHRIFT FUR METALLKUNDE, 2006, 97 (03) :246-265

[9]

LAMIKOV LK, 1964, SOVIET NONFERROUS ME, P79

[10] The effect of scandium on the microstructure, mechanical properties and weldability of a cast Al-Mg alloy [J].

Lathabai, S ;

Lloyd, PG .

ACTA MATERIALIA, 2002, 50 (17) :4275-4292

← 1 2 3 4 →