Microstructure, mechanical properties and superplasticity of the Al-Cu-Y-Zr alloy

被引：51

作者：

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

Barkov, R. Yu ^{[1
]}

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

Levchenko, V. S. ^{[1
]}

Kotov, A. D. ^{[1
]}

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

机构：

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

[2] Al Azhar Univ, Fac Engn, Min Met & Petr Engn Dept, Cairo 11371, Egypt

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 758卷

基金：

俄罗斯科学基金会;

关键词：

Aluminum alloys; Yttrium; Phase composition; Recrystallization; Mechanical properties; Superplasticity; DEFORMATION MECHANISMS; DIFFUSION CREEP; SELF-DIFFUSION; SC ALLOYS; EVOLUTION; PRECIPITATION; BEHAVIOR; ADDITIONS; SURFACE; RECRYSTALLIZATION;

D O I：

10.1016/j.msea.2019.04.118

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The phase composition, mechanical properties, and superplastic deformation behavior of a novel Al-4.7Cu-1.6Y-0.3Zr alloy were analyzed. The precipitation of Al-3(Zr,Y) dispersoids was observed during a homogenization treatment. The precipitates have an L1(2) structure and a mean size of 17 and 19 nm at 540 and 590 degrees C, respectively, The sheets exhibit a yield strength of 292 MPa, an ultimate tensile strength of 320 MPa, and an elongation of 5.3% after simple thermomechanical treatment and annealing at 100 degrees C. The Al-4.7Cu-1.6Y-0.3Zr alloy exhibits superplasticity with m > 0.4 and elongation of 300-400% within a temperature range of 550-580 degrees C and a strain rate range of 1 x 10(-4) to 1 x 10(-3)s(-1).

引用

页码：28 / 35

页数：8

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