Investigation of hybrid copper surface composite synthesized via FSP

Raja, R.; Jannet, Sabitha; Thankachan, Titus

doi:10.1080/10426914.2021.1914841

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…ZrC ceramic particles will act as heterogeneous nucleation sites, significantly refining the matrix structure. Significant improvement in stir zone hardness was largely due to the following strengthening mechanisms: refined grains, grain boundary strengthening by the Hall-Petch relationship, particle strengthening by the Orowan theory, and the creation of www.nature.com/scientificreports/ more dislocations owing to the difference in coefficient of thermal expansion between the ZrC reinforcement and the AZ31 alloy matrix 24,25 . The existence of uniformly distributed and fine ZrC particles effectively blocks the dislocation motion 26 .…”

Section: Mechanical Properties Of Az31/zrc Surface Compositesmentioning

confidence: 99%

Microstructure, hardness and wear behavior of ZrC particle reinforced AZ31 surface composites synthesized via friction stir processing

Kumar,

Thankachan,

Shalini

et al. 2023

Sci Rep

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Dry sliding wear behaviour of friction stir processed (FSP) AZ31 and AZ31/ZrC particles (5, 10, and 15 vol%) reinforced surface composite was investigated at different sliding speeds and loads. The samples were tested using a pin-on-disc apparatus with EN31 steel as the counter body to determine the role of FSP and ZrC reinforcement on the microstructure, hardness, and wear behaviour of AZ31. Base metal AZ31 alloy exhibits a hardness of 60 HV, whereas the 15 vol% ZrC-reinforced composites had the highest hardness of 108 HV. It was also identified that 15 vol% ZrC-reinforced composites exhibited lowest wear rate and friction coefficient under all testing conditions. Abrasion, delamination, oxidation, material softening, and plastic deformation are the primary wear mechanisms viewed from the wear tracks of the samples. Higher volume fraction of ZrC particles exhibited better wear resistance at all speeds and loads than AZ31 alloy. A wear map has been generated for different material compositions and wear conditions to identify the main wear mechanisms easily.

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Section: Mechanical Properties Of Az31/zrc Surface Compositesmentioning

confidence: 99%