Effect of annealing on the structure and properties of Al-Li-Cu-Zr-Sc-Ag alloy subjected to severe plastic deformation

被引：6

作者：

Kaigorodova, L. I. ^{[1
]}

Rasposienko, D. Yu. ^{[1
]}

Pushin, V. G. ^{[1
]}

Pilyugin, V. P. ^{[1
]}

Smirnov, S. V. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Branch, Ekaterinburg 620990, Russia

[2] Russian Acad Sci, Inst Engn Sci, Ural Branch, Ekaterinburg 620049, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2015年 / 116卷 / 09期

基金：

俄罗斯基础研究基金会;

关键词：

severe plastic deformation; high-pressure torsion; aging; recrystallization; decomposition of the supersaturated solid solution; nanocrystalline structure; boundary; phase; dislocations; recovery; microhardness; MECHANICAL-PROPERTIES; MG;

D O I：

10.1134/S0031918X15090082

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Methods of transmission electron microscopy and measurements of microhardness were used to study structural and phase transformations upon low-temperature annealing (150A degrees C) in the aluminum-lithium alloy 1469 with Ag addition subjected to severe plastic deformation by high-pressure torsion. It has been shown that the nature of the nanocrystalline structure that forms upon annealing is determined by the competing processes of recrystallization and the decomposition of the supersaturated solid solution. The effect of the structural state of the annealed alloy on the level of mechanical properties (nanohardness, modulus of elasticity, their ratio, and plasticity) is discussed.

引用

页码：932 / 941

页数：10

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