Influence of casting parameters on microstructure and mechanical properties of AC2A thixocasting

Thixocasting is a semisolid metal (SSM) casting technology that combines the benefits of spheroidal non-dendritic microstructure of SSM and near net shape casting of conventional die casting, leading to extremely high integrity and exceptional mechanical properties of cast components. In this paper,...

Full description

Saved in:
Bibliographic Details
Published in:Materials research innovations 2013-12, Vol.17 (sup2), p.s90-s99
Main Authors: Parasil, W., Uthaisangsuk, V., Ohtake, N., Jirattiticharoean, W., Srimanosaowapak, S.
Format: Article
Language:English
Subjects:
AC2A
Casting parameters
Mechanical properties
T6 heat treatment
Thixocasting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thixocasting is a semisolid metal (SSM) casting technology that combines the benefits of spheroidal non-dendritic microstructure of SSM and near net shape casting of conventional die casting, leading to extremely high integrity and exceptional mechanical properties of cast components. In this paper, the effects of casting parameters and T6 heat treatment on the microstructure and mechanical properties of fork-like thixocast components of AC2A aluminium alloy were investigated. The microstructures of specimens of both as cast and T6 cast components were observed. Uniform distribution of fine solid particles of globular primary phase was found for all casting conditions. However, low solid fraction of the primary phase was noticed at the edge of each casting, where enriched solutes were also detected. Significant increase in porosity was found in the biscuit and runner part of the castings. The effects of casting parameters on phase separation, porosity distribution and mechanical properties of the castings are discussed.
ISSN:1432-8917
1433-075X
DOI:10.1179/1432891713Z.000000000298