Effect of Zr on microstructure and mechanical properties of the Al-Cu-Er alloy

被引：42

作者：

Amer, S. M. ^{[1
,2
]}

Barkov, R. Yu ^{[1
]}

Yakovtseva, O. A. ^{[1
]}

Loginova, I. S. ^{[1
]}

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

机构：

[1] Natl Univ Sci & Technol MISIS, Leninskiy Pr 4, Moscow 119049, Russia

[2] Al Azhar Univ, Fac Engn, Met & Petr Engn Dept, Min, Cairo, Egypt

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 04期

基金：

俄罗斯科学基金会;

关键词：

Metals and alloys; microstructure; phase composition; L1(2) precipitates; Erbium; recrystallisation; hardness; mechanical properties; PRECIPITATION; HOMOGENIZATION; EVOLUTION;

D O I：

10.1080/02670836.2019.1709689

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and mechanical properties of the Al-4Cu-2.7Er-0.3Zr alloy were investigated. The precipitates of the L1(2) structured phase with sizes 37 +/- 12 nm were formed in lines and homogenously distributed inside the aluminium matrix after annealing at 605 degrees C for 1 h. The as-rolled Al-4Cu-2.7Er-0.3Zr alloy developed an increased hardness after 1 h annealing at 100-550 degrees C and 0.5-6 h annealing at 150-250 degrees C due to precipitation of the Al-3(Er,Zr) phase. Addition of Zirconium improved the tensile properties relative to those of the Zr-free alloy by approximately 20 MPa: yield strength = 273-296 MPa and ultimate tensile strength = 296-328 MPa in the alloys annealed at 100-150 degrees C.

引用

页码：453 / 459

页数：7

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