Abrasive wear study of AA7075/ZrB 2  reinforced composites

Pardeep Sharma; Neeraj Sharma; Gurpreet Singh; Vishal Dabra

doi:10.17073/1683-4518-2019-10-38-41

Abrasive wear study of AA7075/ZrB₂ reinforced composites

Pardeep Sharma, Neeraj Sharma, Gurpreet Singh, Vishal Dabra

https://doi.org/10.17073/1683-4518-2019-10-38-41

Full Text:

Abstract

In situ composites of AA7075‒xZrB₂ (x = 0, 5, 10, 15 and 20 wt. %) were manufactured. For in situ composites; ZrB₂ was formed by the reaction of potassium zirconium flouride and potassium fluoroborate; with molten AA7075 at a reaction temperature of 800 o C. The microstructures were analyzed by SEM. Dry sliding wear properties were estimated on specimen’s prepared according ASTM G9995a standard at room temperature. The results indicated that the ZrB₂ particles were distributed fairly uniform throughout the AA7075. Microhardness of composites increased from 45 to 78 VHN at 0 to 20 wt. % of ZrB₂ particles respectively. Wear rate enlarged with a raise in the load and sliding distance; whereas reduced with raise in sliding speed. The material removal mechanism was found due to abrasive wear in all composites. Ill. 3. Ref. 33.

Keywords

reinforced composites, microhardness, abrasive wear,

About the Authors

Pardeep Sharma

Панипатский инженерно-технологический институт
India

Neeraj Sharma

Университет Махариши Маркандешвар; Университет Йоханнесбурга
India

Gurpreet Singh

Технологический институт Амити, Университет Амити
India

Vishal Dabra

Панипатский инженерно-технологический институт
India

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Supplementary files

For citation: Sharma P., Sharma N., Singh G., Dabra V. Abrasive wear study of AA7075/ZrB₂ reinforced composites. NOVYE OGNEUPORY (NEW REFRACTORIES). 2019;(10):38-41. https://doi.org/10.17073/1683-4518-2019-10-38-41

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Abrasive wear study of AA7075/ZrB2 reinforced composites