Effect of thixocasting and heat treatment on the tribological properties of hypoeutectic Al–Si alloy

This paper presents results of structural, mechanical and tribological tests of thixocast hypoeutectic Al–Si alloy A356 (EN AlSi7Mg0.3). The pin-on-disc tribometer was used to carry out tribological tests under dry sliding conditions at different loads. Two sets of specimens were used as pin materia...

Full description

Saved in:
Bibliographic Details
Published in:Wear 2008-03, Vol.264 (7), p.616-623
Main Authors: Vencl, A., Bobić, I., Mišković, Z.
Format: Article
Language:English
Subjects:
Al–Si alloy
Applied sciences
Dry sliding
Exact sciences and technology
Friction
Friction, wear, lubrication
Heat treatment
Machine components
Mechanical engineering. Machine design
Thixocasting
Wear
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:This paper presents results of structural, mechanical and tribological tests of thixocast hypoeutectic Al–Si alloy A356 (EN AlSi7Mg0.3). The pin-on-disc tribometer was used to carry out tribological tests under dry sliding conditions at different loads. Two sets of specimens were used as pin materials. The first one was taken from the original alloy billet and the second one from thixocast alloy. Heat treatment was applied on both sets of specimens. The results showed that, for all applied loads, heat treatment improved tribological properties, while improvements caused by additional thixocasting were not systematic, i.e. lower friction coefficient was noticed just for lower specific loads. Overall better wear resistance of thixocast materials, compared to the originally alloy, was attributed mainly to their higher silicon content.
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2007.05.011