Tribological Study Of Additive Manufactured Aluminium Alloy ER5356 For Potential Part Repair
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Date
2022-07-24
Authors
Mohd Noor Ariffin, Siti Syairah
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Aluminum alloys are widely used in a range of automotive parts due to their
high strength-to-weight ratio. Unfortunately, it’s resistance to wear is relatively low,
result in short part life upon application due to sliding contact. As an alternative
unfitted part due to severe worn which is currently send to landfill, has second chance
to service via reconstruction of the worn area using metal additive manufacturing
method. However, the properties of deposited material need to be studied before it fit
to be reused. The study intent to investigate the performance of additive manufactured
aluminium alloy on tribology properties like wear rate (mm3
/Nm) and coefficient of
friction. This experiment considers cold forging and unforging specimen ER5356
utilising a reciprocating ball-on-flat arrangement with a speed of 30RPM, 50RPM and
70RPM with different load of 1KG, 3KG and 5KG. The result found that the welded
specimen of cold forging indicated lower value of coefficient of friction (COF) and
wear rate (mm3
/Nm). For the hardness of cold forging samples shows that the highest
value compared to others condition. The results of the experiment are compared and it
has been observed good agreement. Based on the initial findings, the additive
manufactured material result in less wear rate (mm3/Nm) compared to material that
non-weld, but for the coefficient of friction is almost same.