A preliminary study on the feasibility of friction stir back extrusion

被引：87
作者：
Abu-Farha, Fadi [1 ]
机构：
[1] Penn State Erie, Mech Engn, Erie, PA 16563 USA
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 09期
关键词：
Severe plastic deformation; Extrusion; Aluminium alloys; Grain refining; Friction stir back extrusion; MICROSTRUCTURE; SUPERPLASTICITY; MAGNESIUM;
D O I：
10.1016/j.scriptamat.2012.01.059
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The feasibility of producing fine-grained tubes via the novel concept of friction stir back extrusion was investigated. A rotating tool is plunged into aluminium round bar specimens at a selected feed rate, forcing the processed material radially outwards and thus forming tubes. Preliminary results show that the process is capable of producing structurally-sound, void-free tubes; optical microscopy clearly shows the presence of a stir zone, and grain size measurements indicate significant refinement in the microstructure of the starting material. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：615 / 618
页数：4
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