Metall. Res. Technol.
Volume 111, Number 6, 2014
|Page(s)||375 - 382|
|Published online||12 December 2014|
Investigating the effect of titanium addition on the wear resistance of Hadfield steel
1 Department of Materials Science and
Engneering, NajafAbad Branch, Islamic Azad University, Isfahan, Iran
2 Department of Mechanical Engineering, Tiran Branch, Islamic Azad University, Isfahan, Iran
Accepted: 19 November 2014
In this study, the effect of titanium addition on the microstructure and wear behavior of Hadfield steel was investigated. To do so, four groups of samples with different titanium contents of 0, 0.2, 0.4 and 0.6 wt% were prepared. After casting, the samples were austenitized at 1100 °C for 3 h and quenched in water subsequently for solution treatment. The microstructure of the samples was investigated using an optical microscope (OM) and scanning electron microscope (SEM). For more studies the carbide composition was analyzed via energy-dispersive spectroscopy (EDX). A wear test was performed via a pin-on-disk wear testing machine. The results show that after heat treatment the microstructure of the titanium-free sample is fully austenitic, while the other samples show an austenitic structure with non-continuous carbide precipitates. It was also revealed that titanium addition improves the hardness and wear resistance of the samples. The highest wear resistance was observed in the sample with 0.6 wt% titanium content. It was also shown that the predominant wear mechanisms are adhesive and tribo-chemical. Beyond this, the effect of cold working via a hammering treatment was studied on the samples and revealed that austenite-to-martensite transformation improves the hardness and wear resistance significantly.
Key words: Hadfield steel / titanium carbide / wear resistance / hardness
© EDP Sciences 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.