Microstructure and age hardening response of cast Al-Mg-Sc-Zr alloys

被引：42

作者：

Singh, V ^{[1
]}

Prasad, KS ^{[1
]}

Gokhale, AA ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

来源：

JOURNAL OF MATERIALS SCIENCE | 2004年 / 39卷 / 08期

关键词：

D O I：

10.1023/B:JMSC.0000021465.99764.b5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The age hardening response and microstructure of cast Al-Mg-Sc-Zr alloys were investigated. The microstructure of the sample of the study were studied using transmission electron microscopy (TEM). It was observed that Mg induced hardness was purely additive and independent of the transformations related to Sc and Zr. It was also observed that the binary alloy (0Mg) softened after aging beyond 300°C, while the Zr containing alloys did not soften significantly after aging at 400°C. Results show that the age hardening is due to fine Al3(Sc1-xZrx) preciptates and the increased hardness of Mg containing alloys is due to solid solution hardening.

引用

页码：2861 / 2864

页数：4

共 9 条

[1] 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

[2] 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

[3] Microstructure and mechanical properties of a 5754 aluminum alloy modified by Sc and Zr additions [J].

Fuller, CB ;

Krause, AR ;

Dunand, DC ;

Seidman, DN .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 338 (1-2) :8-16

[4] Influence of scandium on superplastic ductilities in an Al-Mg-Sc alloy [J].

Komura, S ;

Horita, Z ;

Furukawa, M ;

Nemoto, M ;

Langdon, TG .

JOURNAL OF MATERIALS RESEARCH, 2000, 15 (11) :2571-2576

[5]

POLMEAR IJ, 1995, LIGHT ALLOYS METALLU, P104

[6] Control of grain structure through transition elemental additions in an Al-Li base alloy [J].

Singh, V ;

Gokhale, AA .

ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3, 2000, 331-3 :477-482

[7]

SINGH V, 2002, INT J CAST MET RES, V14

[8]

TOROPOVA LS, 1998, ADV ALUMINIUM ALLOYS, P135

[9] Effect of minor Sc and Zr on the microstructure and mechanical properties of Al-Mg based alloys [J].

Yin, ZM ;

Pan, QL ;

Zhang, YH ;

Jiang, F .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (01) :151-155

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