Improvement of mechanical and wear behavior by the development of a new tool for the friction stir processing of Mg/B4C composite

Paidar, Moslem; Bokov, Dmitry Olegovich; Mehrez, Sadok; Ojo, Olatunji Oladimeji; Ramalingam, Vaira Vignesh; Memon, Shabbir

doi:10.1016/j.surfcoat.2021.127797

Cited by 52 publications

(8 citation statements)

References 36 publications

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“…These dislocations further restraint the plastic deformation and enhance yield strength and microhardness as well as ensuing work hardening of the PZ. Apart from these mechanisms, with higher grain boundary area envisaged through FSP led refined grains further interrupts the dislocation movement and thereby enhances the microhardness [61]. Like other parameters, FSP at 5 mm s −1 shows an increase of microhardness from the PM, which appears to have a relationship with the amount of "stirring".…”

Section: Microhardnessmentioning

confidence: 91%

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

et al. 2022

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The present endeavour is to augment mechanical attributes via friction stir processing (FSP) in hypereutectic aluminium–silicon castings by the means of microstructural modifications and defects reduction. Wherein, the study proceeds with mainly two approaches namely, alteration in tool revolution (TR) and the number of FSP passes. The prepared specimens were evaluated investigating volume fraction of porosities, microstructural characterizations and microhardness. Therefrom, the specimen with highest number of passes delivered most uniform properties resulting from the reduction in casting porosities and refined silicon particle uniform distribution throughout friction stir processed zone. This endeavour may be considered as a footstep towards more industrial readied material transformation.

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Section: Microhardnessmentioning

confidence: 91%

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

et al. 2022

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“…A refined microstructure, without cracks and a high amount of H/E in the MT2 specimen, is the most important reason for the formation of shallow and partial scratches on the worn surface. In a study, Paidar et al [44] reported the formation of equiaxed grains in the coating as the cause of the increased wear resistance due to stronger atomic bonding. Similar results were also reported by Wang et al [45].…”

Section: Wearmentioning

confidence: 99%

Microstructure of NbMoTaTiNi Refractory High-Entropy Alloy Coating Fabricated by Ultrasonic Field-Assisted Laser Cladding Process

Zhao,

Taheri,

Shirvani

et al. 2023

Coatings

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Refractory high-entropy alloys (RHEAs) contain alloying elements with a high melting point, promising high-temperature applications due to their unique properties. In this work, laser cladding is used to prepare RHEAS based on NbMoTaTiNi. At the same time as laser cladding, the ultrasonic field is used, and then the microstructural characteristics, grain size, residual stress, wear, and hardness of the coating are evaluated. The results show that the coating is biphasic and includes the γ (Ni) and NbMoTaTiNi phase. The NbMoTaTiNi phase had a uniform distribution throughout the coating when the ultrasonic field was applied, so that when the ultrasonic field was not used, the NbMoTaTiNi powder, in addition to spreading uniformly, had the un-melting of large particles. This caused an increase in the residual tension of the coating. The conversion of columnar grains to the equiaxed, and the reduction in structural defects, were other characteristics of using the ultrasonic field. The formation of equiaxed grains with zigzag grain boundaries reduced the friction coefficient, wear volume loss, and the wear rate of the coating applied with ultrasonic.

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“…Helicopter transmission casings and gearboxes [128] Combined powder metallurgy and hot extrusion process…”

Section: Latest Trends In Manufacturing Of Non Ferrous Compositesmentioning

confidence: 99%

An Overview of the Mechanical and Tribological Characteristics of Non - Ferrous Metal Matrix Composites for Advanced Engineering Applications

Wadhwa¹,

Chauhan²

2023

Tribol. Ind.

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The ever increasing service requirement of industries like automobile, aerospace, marine, infrastructure and transportation have evolved non-ferrous metal matrix composites with different combinations of ceramic and soft reinforcements which have resulted in the improvement of their tribo-mechanical properties as compared to an unreinforced alloy. Secondary reinforcements provide safe disposal of agro-industrial waste thereby reducing environmental degradation. The scanning electron micrographs reveals fairly uniform dispersal of reinforcement in metal matrix if proper conditions are maintained and porosity levels are found to be in acceptable range. The density, hardness, wear resistance, tensile strength, fatigue strength and impact strength of non-ferrous composites have been found to be either comparable or superior to an unreinforced alloy with minimum weight and cost. The purpose of current study is to explore the nonferrous composites and propose their application area based on material properties. An attempt has been made for indepth review on the effect of controllable process parameters on tribo-mechanical properties of the non-ferrous composites. The study concludes that non- ferrous composites with single or more than one reinforcement have superior tribo-mechanical characteristics making them suitable for design of high performance, low cost and low weight to strength ratio components.

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Improvement of mechanical and wear behavior by the development of a new tool for the friction stir processing of Mg/B4C composite

Cited by 52 publications

References 36 publications

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

Microstructure of NbMoTaTiNi Refractory High-Entropy Alloy Coating Fabricated by Ultrasonic Field-Assisted Laser Cladding Process

An Overview of the Mechanical and Tribological Characteristics of Non - Ferrous Metal Matrix Composites for Advanced Engineering Applications

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