Microstructure, grain refinement and hardness of Al-3%Mg aluminium alloy processed by ECAP with helical die

被引：14

作者：

Snopinski, Przemyslaw ^{[1
]}

Tanski, T. ^{[1
]}

Matus, K. ^{[1
]}

Rusz, S. ^{[2
]}

机构：

[1] Silesian Tech Univ, Inst Engn Mat & Biomat, Div Mat Proc Technol Management & Comp Tech Mat S, Ul Konarskiego 18a, PL-44100 Gliwice, Poland

[2] VSB Tech Univ Ostrava, 17 Listopadu 15, Ostrava 70833, Czech Republic

来源：

ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING | 2019年 / 19卷 / 02期

关键词：

Microstructure; Hardness; Helical ECAP; EBSD; TEM; AL-MG ALLOYS; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; TEMPERATURE ECAP; CHANNEL; DEFORMATION; EXTRUSION; EVOLUTION; BEHAVIOR;

D O I：

10.1016/j.acme.2018.11.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In the present research, commercial Al-3%Mg aluminium alloy was subjected to the ECAP processing using a modified die with a helical 30 degrees exit channel. The changes in microstructure were characterized by light microscopy, electron backscatter diffraction (EBSD) and TEM. Mechanical properties were compared based on hardness measurement. It is also shown that such modification of ECAP die enhances grain refinement due to the vortex-like flow of metal during subsequent deformations. The results of the metallographic study showed that microstructure is refined due to the interactions and intersections of the deformation bands. The mechanical properties examinations display a significant improvement after the first ECAP pass and less significant increase with subsequent passes. (C) 2018 Politechnika Wroclawska. Published by Elsevier B.V. All rights reserved.

引用

页码：287 / 296

页数：10

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