Thermal Stability of the Structure and Mechanical Properties of Fine-Grained Aluminum Conductor Alloys Al-Mg-Zr-Sc(Yb)

被引：3

作者：

Chuvil'deev, V. N. ^{[1
]}

Nokhrin, A. V. ^{[1
]}

Shadrina, Ya. S. ^{[1
]}

Piskunov, A. V. ^{[1
]}

Kopylov, V. I. ^{[1
,2
]}

Berendeev, N. N. ^{[1
]}

Chepelenko, V. N. ^{[3
]}

机构：

[1] Lobachevskii Nizhny Novgorod State Univ, Nizhnii Novgorod 603600, Russia

[2] Belarussian Acad Sci, Physicotech Inst, Minsk 220141, BELARUS

[3] Moscow Factory Proc Special Alloys, Moscow 117246, Russia

来源：

RUSSIAN METALLURGY | 2020年 / 2020卷 / 09期

基金：

俄罗斯科学基金会;

关键词：

aluminum alloys; scandium; zirconium; particles; fine-grained structure; hardness; thermal stability; PRECIPITATION EVOLUTION; AL-ER; ZR; YB; RECRYSTALLIZATION; MICROSTRUCTURE; SC; ADDITIONS; AL3SC; SCANDIUM;

D O I：

10.1134/S0036029520090037

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The thermal stability of a fine-grained aluminum wire made of Al-Mg-Zr-Sc(Yb) alloys with different zirconium and scandium (ytterbium) contents is studied. Samples are produced by induction casting and subsequent cold working by drawing. The structure and properties of fine-grained the Al-0.6Mg-Zr-Sc alloys are shown to exhibit high thermal stability due to preliminary (before drawing) annealing at 320 degrees C for 2 h, resulting in the precipitation of intermetallic Al-3(ScxZr1 -x) particles. A fine-grained homogeneous structure with an average grain size of 2.4-2.8 mu m and a microhardness of 405-440 MPa is found to be retained in the Al-0.6Mg-Zr-Sc alloys after prolonged annealing at 400 degrees C for 100 h. A fine-grained magnesium-free Al-0.33Zr-0.16Yb ytterbium alloy has a low hardness and low thermal stability. The average grain size in it after annealing at 400 degrees C for 100 h is 4.1-4.8 mu m.

引用

页码：987 / 998

页数：12

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