Dry sliding wear behaviour of A356-TiB₂/TiC in-situ composites at ambient and elevated temperatures
by Ismail Kakaravada; A. Mahamani; V. Pandurangadu
International Journal of Materials Engineering Innovation (IJMATEI), Vol. 11, No. 2, 2020

Abstract: A356-TiB₂/TiC in-situ metal matrix composites have been developed through reactions between liquid aluminium and various chemicals, such as potassium hexa fluorotitanate (K₂TiF₆), potassium tetra fluoroborate (KBF₄), and graphite (C), through flex assisted synthesis. In the present investigation, the distinct quantities of halide salts were added into molten aluminium to obtain 0, 2.5, 5, and 7.5% of TiB₂/TiC-reinforced composites. The fabricated composites were examined by a scanning electron microscope (SEM) energy dispersive analysis (EDAX) X-ray diffraction analysis (XRD) and micro-hardness tests to evaluate the effects of adding the reinforcement. The wear behaviour of A356-TiB₂/TiC composites was studied using a pin-on-disk apparatus. The influence of wt% of the reinforcement, sliding velocity, normal load, and temperature on wear rate (WR), coefficient of friction (COF), specific wear rate (SWR), and wear rate per unit wt% of the reinforcement. The worn out surfaces of A356-TiB₂/TiC composites were carefully analysed with an SEM. TiB₂ and TiC particles improved the wear resistance of composites at ambient and elevated temperatures. This result reveals that at elevated temperatures, the pure alloy was subjected to adhesive wear, whereas oxidation wear was more dominant in A356-TiB₂/TiC composites.

Online publication date: Thu, 16-Apr-2020

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials Engineering Innovation (IJMATEI):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com