Design strategy for microalloyed ultra-ductile magnesium alloys

被引：78

作者：

Haenzi, A. C. ^{[1
]}

Dalla Torre, F. H. ^{[1
]}

Sologubenko, A. S. ^{[1
]}

Gunde, P. ^{[1
]}

Schmid-Fetzer, R. ^{[2
]}

Kuehlein, M. ^{[3
]}

Loeffler, J. F. ^{[1
]}

Uggowitzer, P. J. ^{[1
]}

机构：

[1] ETH, Lab Met Phys & Technol, Dept Mat, CH-8093 Zurich, Switzerland

[2] Clausthal Univ Technol, Inst Met, D-38678 Clausthal Zellerfeld, Germany

[3] ARC Leichtmetallkompetenzzentrum Ranshofen GmbH, A-5282 Ranshofen, Austria

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2009年 / 89卷 / 06期

关键词：

magnesium alloys; extrusion; dynamic recrystallisation; ductility; grain growth restriction; MECHANICAL-PROPERTIES; ROOM-TEMPERATURE; WROUGHT MAGNESIUM; GRAIN-REFINEMENT; MG ALLOYS; ZN ALLOY; MICROSTRUCTURE; DEFORMATION; TECHNOLOGY; INHIBITION;

D O I：

10.1080/09500830902960125

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

This article describes a design strategy deployed in developing ultra-ductile Mg alloys based on a microalloying concept, which aims to restrict grain growth considerably during alloy casting and forming. We discuss the efficiency of the design approach, and evaluate the resulting microstructural and mechanical properties. After processing, the so-designed alloys ZQCa3 (Mg-3Zn-0.5Ag-0.25Ca-0.15Mn, in wt.%) and ZKQCa3 (Mg-3Zn-0.5Zr-0.5Ag-0.25Ca-0.15Mn, in wt.%) reveal very fine grains (10 m), high ductility (elongation to fracture of up to 30%) at moderate strength or high strength (ultimate tensile strength of up to 350 MPa) at reasonable ductility. These properties are explained based on thermodynamic modelling, microstructure analysis including transmission electron microscopy studies, and microstructural and mechanical testing after annealing, and are compared to a related commercial alloy (ZK31).

引用

页码：377 / 390

页数：14

共 31 条

[1]

SUBSTITUTIONAL SOLUTION HARDENING OF MAGNESIUM SINGLE-CRYSTALS [J].

AKHTAR, A ;

TEGHTSOO.E .

PHILOSOPHICAL MAGAZINE, 1972, 25 (04) :897-&

[2]

INHIBITION OF GRAIN-GROWTH BY 2ND PHASE PARTICLES - 3 DIMENSIONAL MONTE-CARLO COMPUTER-SIMULATIONS [J].

ANDERSON, MP ;

GREST, GS ;

DOHERTY, RD ;

LI, K ;

SROLOVITZ, DJ .

SCRIPTA METALLURGICA, 1989, 23 (05) :753-758

[3]

Heat resistant magnesium alloys for automotive powertrain applications [J].

Anyanwu, IA ;

Gokan, Y ;

Nozawa, S ;

Kamado, S ;

Kojima, Y ;

Takeda, S ;

Ishida, T .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :445-450

[4]

Mechanical properties and structure of ignition-proof Mg-Ca-Zr alloys produced by squeeze casting [J].

Chang, SY ;

Tezuka, H ;

Kamio, A .

MATERIALS TRANSACTIONS JIM, 1997, 38 (06) :526-535

[5]

CHAPMAN JA, 1962, J I MET, V91, P39

[6]

Microstructure and mechanical properties of microalloyed and equal channel angular extruded Mg alloys [J].

Dalla Torre, Florian H. ;

Haenzi, Anja C. ;

Uggowitzer, Peter J. .

SCRIPTA MATERIALIA, 2008, 59 (02) :207-210

[7]

Emley E.F., 1966, PRINCIPLES MAGNESIUM

[8]

The effect of Ca addition on age hardening behaviors and mechanical properties in Mg-Zn alloy [J].

Eom, JP ;

Jin, QL ;

Lim, SG ;

Hur, BY ;

Park, WW .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :307-311

[9]

The science, technology, and applications of magnesium [J].

Froes, FH ;

Eliezer, D ;

Aghion, EL .

JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 1998, 50 (09) :30-34

[10]

HANZI AC, 2009, P MAGN TECHN 2009 TM, P521

← 1 2 3 4 →