Dry Sliding Wear Behavior of (GNPs + TiB2)-Reinforced AZ91 Magnesium Matrix Hybrid Composites Produced by Pressure Infiltration Casting Method

In this study, TiB 2 - and graphene-reinforced Mg matrix (AZ91) composites were produced by the pressure infiltration method. The production process was carried out at 750 °C and 8 bar pressure in the SF6 gas atmosphere. The hardness, compression, and wear behaviors of the composite materials were e...

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Bibliographic Details
Published in:International journal of metalcasting 2021-10, Vol.15 (4), p.1250-1259
Main Authors: Cevik, Engin, Gundogan, Murat
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Science
Metallic Materials
Structural Materials
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Summary:In this study, TiB 2 - and graphene-reinforced Mg matrix (AZ91) composites were produced by the pressure infiltration method. The production process was carried out at 750 °C and 8 bar pressure in the SF6 gas atmosphere. The hardness, compression, and wear behaviors of the composite materials were examined. In addition, SEM examinations were conducted to understand the wear mechanisms of produced samples. The porosity ratio increased with the increasing graphene ratio. At the end of the measurements, the highest compressive strength was measured as 415 MPa and 140.6 HB in composite containing 0.25 vol% graphene compared to pure matrix and composite containing only TiB 2 . The highest abrasion resistance was achieved with the addition of 0.25 vol% graphene.
ISSN:1939-5981
2163-3193
DOI:10.1007/s40962-020-00552-w