Wear Behavior of Friction Stir Processed NAB Alloys in Marine Environment

Namboodiri, V. Vishnu; Pottirayil, Anirudhan; Kumar, Praveen; Kailas, Satish V.

doi:10.2474/trol.13.75

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…Oh-Ishi et al investigated the effects of tool rotation and travel speed on the temperature distribution and microstructure during the FSP of NiAl bronze (NAB) [18]. Namboodiri et al treated NAB with FSP and studied its wear resistance under seawater [19]. Gao et al fabricated dissimilar layered joints of brass (Cu-40Zn) and ordinary carbon steel (S25C) using FSW [20].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Wear Resistance of High-Strength Brass by Friction Stir Processing

Hirukawa,

Kawada,

Miyatake

et al. 2023

Tribology Online

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High-strength brass is commonly used to produce sliding parts; however, its wear resistance should be further improved to extend the service life and performance of machinery and equipment constructed using this material. In this study, friction stir processing (FSP), a technology based on friction stir welding, was used to improve the wear resistance of high-strength brass. Because the application of FSP requires subsequent finishing operations on the workpiece, milling and wire electrical discharge machining (WEDM) have been implemented and their effects on the surfaces modified by FSP were investigated. FSP refined the crystal grains, resulting in improved hardness from 240 to 300 HV. Sliding tests were conducted to evaluate the friction and wear properties under three conditions: without FSP, with FSP and milling, and with FSP and WEDM. After applying FSP and milling, the wear amount decreased by 15%, in other words, the wear resistance improved compared with that observed without FSP. With FSP and WEDM, the wear resistance did not improve.

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Section: Introductionmentioning

confidence: 99%

Improvement of Wear Resistance of High-Strength Brass by Friction Stir Processing

Hirukawa,

Kawada,

Miyatake

et al. 2023

Tribology Online

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Friction stir processing of squeeze cast A356 with surface compacted graphene nanoplatelets (GNPs) for the synthesis of metal matrix composites

Kumar

Madhu

Pariyar

et al. 2020

Materials Science and Engineering: A

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Friction stir processing (FSP) was applied to graphene nanoplatelets (GNPs) physically compacted on the surface of squeeze cast A356 alloy to incorporate GNPs within the matrix and to improve its mechanical properties. Squeeze casting resulted in finer size silicon and intermetallic compounds in cast microstructure, and subsequently FSP further refined the microstructure of squeeze cast A356 alloy, and GNP reinforced A356 alloy. The finer Si particles, intermetallics and graphene dispersed in the matrix increased the yield and ultimate tensile strength of FSP squeeze cast A356 alloy compared to the results reported in prior literature for FSP A356 alloy. Eutectic Si needles have been converted to fine spherical particles during FSP and were uniformly distributed within the nugget zone. The crystallite size of GNPs which were physically adhered to the surface of squeeze cast alloy prior to FSP decreased after FSP as a result of deformation. Thus, a combination of squeeze casting, and friction stir processing and incorporation of GNPs reinforcement in the A356 matrix is a promising route to further improve its mechanical properties.

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