Deformation Behavior, Microstructure and Mechanical Properties of new Al-Cu-Yb(Gd)-Mg-Mn-Zr Alloys

被引：2

作者：

Mamzurina, O. I. ^{[1
]}

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

Glavatskikh, M. V. ^{[1
]}

Barkov, R. Yu. ^{[1
]}

Khomutov, M. G. ^{[1
]}

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

机构：

[1] Natl Univ Sci & Technol MISiS, Moscow, Russia

[2] Al Azhar Univ, Cairo, Egypt

来源：

METALLURGIST | 2023年 / 67卷 / 7-8期

关键词：

aluminum alloys; ytterbium; gadolinium; microstructure; mechanical properties; dispersoids; AL-CU-Y; HOT DEFORMATION; ALUMINUM-ALLOYS; FLOW-STRESS; CONSTITUTIVE MODEL; PHASE-COMPOSITION; PROCESSING MAP; EVOLUTION; WORKABILITY; MG;

D O I：

10.1007/s11015-023-01604-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Deformation behavior, microstructure and mechanical properties of Al-Cu-Yb(Gd)-Mg-Mn-Zr alloy sheets are investigated. Based upon results of processing maps, optimum regimes for thermomechanical treatment at temperatures of 490-540 degrees C and speeds of 0.01-1 sec-1 are determined. Annealing of cold-rolled sheets at temperatures up to 180 degrees C leads to predominance of a strengthening effect due to aging over weakening from polygonization. Annealing of alloy sheets for 1 h at 400 degrees C forms a partly recrystallized structure with a clear reduction in hardness from 145 HV to 75 HV. After 2 hours of annealing at 150 degrees C, alloy combines a high yield strength of 412-417 MPa, a tensile strength of 441-449 MPa, and a good relative elongation of 2.7-3.2%. Sheet hardening followed by aging makes it possible to increase ductility by up to 5-8%, while the yield strength is 300-306 MPa with tensile strength of 364-389 MPa.

引用

页码：1127 / 1137

页数：11

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