Evolution of Al-Si-Mn-Fe aluminum alloy microstructure in the equal-channel angular pressing with back pressure

被引：9

作者：

Andreyachshenko, Violetta ^{[1
]}

机构：

[1] Ekibastuz Tech & Engn Inst, Dept Met & Energy, Ekibastuz, Kazakhstan

来源：

MATERIALS LETTERS | 2019年 / 254卷

关键词：

Microstructure; Al-Si-Mn-Fe; ECAP; 3xx; Electron microscopy; Grain boundaries; DEFORMATION; IMPROVEMENT; BEHAVIOR;

D O I：

10.1016/j.matlet.2019.07.127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The evolution of the aluminum alloy of the A3xx Al-Si-Mn-Fe series in the equal-channel angular pressing with back pressure with the strain of 0.75 per cycle has been carried out. After preliminary annealing dispersed inclusions of three types have been observed in the alloy: rod-like particles, planar-shaped rounded forms, and silicon particles. Two parallel grain refining schemes have been detected that ensure grinding the grains to the size of about 1 mu m and smaller than 150 nm after the 1.5 degree of deformation. Three cycles of deformation lead to the appearance of small cracks in the sample, the destruction of the sample occurs at the total strain of 3. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：433 / 435

页数：3

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