Achieving Exceptional Mechanical and Tribological Properties of Metal Matrix Composites through Stir Casting Followed by Cryorolling

Vigneshwaran, S.; Seenuvasaperumal, P.; Selvan, C; Palanivel, R.; Rasheed, Mohammad Abdur

doi:10.1201/9781003109723-7

Cited by 2 publications

(2 citation statements)

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“…42 The mechanism of microstructural transformation after FSP follows dynamic recrystallization, dynamic recovery, continuous dynamic recrystallization, grain growth, and formation of fine-equiaxed grains. 43,44 The dynamic recrystallization occurs when the large nuclei forms in the plastically strained zone and restoration occurs by grain boundary migration. The dislocation rearrangement occurs and form subgrain boundaries during dynamic recovery.…”

Section: Resultsmentioning

confidence: 99%

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Effect of volume fraction on microstructure and wear behavior of dual-phase brass/W surface composites fabricated via friction stir processing

Karpagarajan

Balamurugan

Vigneshwaran

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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The objective of this study is to fabricate brass matrix composites (BMCs) via friction stir processing (FSP) for enhancing the wear resistance of brass. The tungsten (W) particles ranging from 0 to 18 vol.% were reinforced in the brass (Cu-40Zn) matrix through FSP. The FSP derived exceptional homogeneous dispersion of W particles leaving no traces of agglomeration and isolation. The bonding between the interface and brass matrix was strong due to the absence of pores and undesirable compounds. Irrespective of the density gradient, FSP nullified the unfavorable effect on W dispersion in BMCs. The BMCs revealed fine-grained structures in the microstructural studies when compared to that of as-received brass, which reported an average grain size of 13 µm. Particularly, the BMC with 18 vol.% W particles showed higher reduction in the average grain size (4 µm), which was 70% less than that of as-received brass. Furthermore, the transmission electron microscopy studies recorded discontinuous dynamic recrystallization and dense dislocations with a density of 9.31 × 108/mm near the stir zone. This led to an improvement in the hardness of BMCs. The BMC with 0 vol.% of W particles reported a hardness of 142 Hv whereas the BMC with 18 vol.% W particles revealed a hardness value of 165 Hv. Moreover, there was a proportional increase in hardness concerning the increase in W particles. The presence of W particles dipped the wear rate of BMCs during sliding tests and emanated smaller wear debris than the brass matrix. The wear rate was found to be 341 × 10−5mm3/m at 0 vol.% of W particles whereas the wear rate was reduced to 185 × 10−5mm3/m at 18 vol.% of W particles. The W particles in BMCs were responsible to alter the adhesive wear into abrasive wear and upgraded the wear resistance of brass material.

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Section: Resultsmentioning

confidence: 99%

“…Moreover, dislocation absorption happens into the subgrains leading to an increase in misorientation and this transforms the low angle grain boundaries to high angle grain boundaries (HAGBs). 44 Further heat input received by the material due to the rotating action of tool causes grain growth and produces a fine-grained microstructure. 45…”

Section: Resultsmentioning

confidence: 99%

Effect of volume fraction on microstructure and wear behavior of dual-phase brass/W surface composites fabricated via friction stir processing

Karpagarajan

Balamurugan

Vigneshwaran

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Modeling the Future Simulation of Friction Stir Processing in Hybrid Composite Materials

Sharma,

Sharma

2024

Utilizing Friction Stir Techniques for Composite Hybridization

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Friction stir processing (FSP) has revolutionized material science, especially with regard to improving hybrid composite materials. The importance of simulation in comprehending FSP dynamics, overcoming obstacles, and streamlining procedures is emphasized in this chapter. Researchers can obtain insights into intricate interactions by modeling material flow, temperature distribution, and microstructural changes. However, they must overcome constraints related to model complexity and resource consumption. Precision machine learning and sophisticated modeling are potential future applications. Notwithstanding these challenges, FSP understanding and optimization are much improved by simulation, which promotes further developments in hybrid composite materials.

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Achieving Exceptional Mechanical and Tribological Properties of Metal Matrix Composites through Stir Casting Followed by Cryorolling

Cited by 2 publications

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Effect of volume fraction on microstructure and wear behavior of dual-phase brass/W surface composites fabricated via friction stir processing

Effect of volume fraction on microstructure and wear behavior of dual-phase brass/W surface composites fabricated via friction stir processing

Modeling the Future Simulation of Friction Stir Processing in Hybrid Composite Materials

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