Optimization of hardness behaviour of TIG modified ceramic coating using the taguchi approach
The increasing need for energy efficient tribo-composite surfaces has led to the enhancement of surface properties of engineering components through parameter processing control. This study was carried out to investigate the hardness behaviour of low alloy steel (LAS) surface modified with TiC un...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications, Switzerland
2015
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/42911/1/P92_2015_Kamilu.pdf http://irep.iium.edu.my/42911/ http://www.ttp.net/1022-6680.html |
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| Summary: | The increasing need for energy efficient tribo-composite surfaces has led to the enhancement of
surface properties of engineering components through parameter processing control. This study was
carried out to investigate the hardness behaviour of low alloy steel (LAS) surface modified with
TiC under a tungsten inert gas (TIG) arc torch. The effects of welding current, traversing speed, arc
voltage and argon flow rate on surface hardness during the surface alloying treatment were analyzed
using Taguchi’s experimental design. The hardness behaviour of the TIG-processed composite
coating was assessed with a Wilson Wolpert microhardness machine. The analysis of the
experimental results based on the Taguchi’s design revealed that the welding speed and welding
voltage are the most significant process parameters influencing the surface hardness performance of
the composite coated layer. The signal-to-noise response was used to identify the optimum
parameter combination for maximizing the surface quality characteristics. The validity of this
approach was confirmed based on the good agreement between the predicted value and
experimental result obtained at the tested optimal conditions. |
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