Study on the feasibility of the torsion extrusion (TE) process as a severe plastic deformation method for consolidation of Al powder

被引：33

作者：

Jahedi, Mohammad ^{[1
]}

Paydar, Mohammad Hossein ^{[1
]}

机构：

[1] Shiraz Univ, Dept Mat Sci & Engn, Sch Engn, Shiraz, Fars, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 20期

关键词：

Severe plastic deformation (SPD); Torsion extrusion (TE); Powder metallurgy; Porosities; Shear strain; HIGH-PRESSURE TORSION; CHANNEL ANGULAR EXTRUSION; ALLOY POWDER; COMPACTION; ALUMINUM; MICROHARDNESS; PARTICLES;

D O I：

10.1016/j.msea.2010.04.088

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Torsion extrusion (TE) process was performed successfully for consolidation of commercially pure aluminum powder at 350 degrees C. It was shown by a specific mechanism that the shear strains applied during consolidation of aluminum powder by the TE process have a considerable effect on the micro-structural shape of the porosities and also their omission efficiency. Density measurements showed that in the TE process a better consolidation, with respect to hot forward extrusion, was accomplished. Tensile and hardness tests results showed superior values for the ultimate tensile strength (UTS) and hardness values in the specimens produced by the TE process. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：5273 / 5279

页数：7

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