Microstructure and flow behaviour during backward extrusion of semi-solid 7075 aluminium alloy

被引：46

作者：

Neag, Adriana ^{[1
]}

Favier, Veronique ^{[2
]}

Bigot, Regis ^{[3
]}

Pop, Mariana ^{[1
]}

机构：

[1] Tech Univ, IPM Dept G03, Cluj Napoca 400641, Romania

[2] Arts & Metiers ParisTech, PIMM UMR CNRS 8006, F-75013 Paris, France

[3] Arts & Metiers ParisTech, LCFC, F-57078 Metz 3, France

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2012年 / 212卷 / 07期

关键词：

Semi-solid; 7075 aluminium alloy; Thixoextrusion; Microstructure; Reheating; HIGH SOLID FRACTION; RHEOLOGICAL BEHAVIOR; X210CRW12; STEEL; STRAIN-RATE; STATE; COMPRESSION; EVOLUTION; TESTS;

D O I：

10.1016/j.jmatprotec.2012.02.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and flow behaviour during thixo backward extrusion of 7075 aluminium alloy were investigated. Reheating the steel die and the aluminium billet placed into the die at the same time using an induction furnace provides rapidly a very homogeneous microstructure suitable for thixoforming. During thixoextrusion, despite the high solid fraction, the solid globules are weakly connected and slide over each other without any plastic deformation. The flow remains quasi homogeneous resulting in homogeneous induced microstructure of the component. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1472 / 1480

页数：9

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