Study of Forging Process of Yttrium-Modified A356 Aluminum Alloy and Numerical Simulation by Thermo-Viscoplastic Finite Element Method

In this study, A356 aluminum alloy was heated up to semi-solid state and used as a billet for forward and backward extrusion. The workpiece will undergo solidification at the contact between billet and the tools when the material flowing through the die cavity during the semi-solid extrusion. The pl...

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Published in:Key Engineering Materials 2016-07, Vol.701, p.177-181
Main Authors: Cheong, Wen Chiet, Kam, Heng Keong, Wang, Chan Chin, Lim, Ying Pio
Format: Article
Language:English
Subjects:
Aluminum base alloys
Backward extrusion
Billets
Computer simulation
Finite element method
Mathematical analysis
Mathematical models
Semi-solid processing
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Wang, Chan Chin
Lim, Ying Pio
description In this study, A356 aluminum alloy was heated up to semi-solid state and used as a billet for forward and backward extrusion. The workpiece will undergo solidification at the contact between billet and the tools when the material flowing through the die cavity during the semi-solid extrusion. The plasticity of A356 with 0.3wt% Y at semi-solid state was investigated by performing compression test. A numerical simulation code based on thermo-viscoplastic finite element method was developed to simulate the material flow and study the yttrium-modified A356 aluminum alloy under forward and backward extrusion. A minimum average punch strain rate is proposed for semi-solid extrusion.
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subjects Aluminum base alloys
Backward extrusion
Billets
Computer simulation
Finite element method
Mathematical analysis
Mathematical models
Semi-solid processing
title Study of Forging Process of Yttrium-Modified A356 Aluminum Alloy and Numerical Simulation by Thermo-Viscoplastic Finite Element Method
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