Relationship between Hardness and Abrasive Wear for some Aluminium Alloys

Mezlini, Salah; Kapsa, Ph.; Abry, Jean‐Christophe; Meille, G.; Ribes, H.; Dif, Robert

doi:10.4028/www.scientific.net/msf.396-402.1517

Cited by 6 publications

(2 citation statements)

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“…35 However, various investigations have shown that the relationship between hardness and abrasive wear coefficient is far from evident. 36 The graph shows that the minimum specific wear rate is obtained for S5 due to the high density, better grain refinement, and improved microhardness. Hence improvement in the density, microstructure and micro-hardness in S5 improved its wear resistance.The results suggested that improving the density and modifying the process parameters can increase the wear resistance of SLM parts.…”

Section: Resultsmentioning

confidence: 95%

Tribological behavior investigation of 316L stainless steel samples processed by selective laser melting

Pant

Nagdeve

Moona

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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Selective Laser Melting (SLM) is a widely used process-based on melting powder material through a high laser beam. Process parameters significantly influence the microstructure, surface texture, and mechanical properties of materials in SLM. In this experimental investigation, we have used SLM core parameters, including scan speed, layer thickness, hatch spacing, and laser power, to observe their influence on the tribological behavior of 316L Stainless Steel (SS) samples. Samples were fabricated using SLM, and the wear test was performed according to the ASTM G-99 test standard on a dry sliding wear testing machine, keeping the process parameters (load, speed, wear track diameter, and time) constant for all samples. The Scanning Electron Microscopic (SEM) analysis showed columnar and cellular microstructure of the samples before the wear. In contrast, shallow plowing grooves, delamination marks, and cracks were observed in worn-out samples caused due to formation of abrasive and adhesive wear. Taguchi's statistical design of experiment was used to optimize the selected parameters for response variables like density and specific wear rate. From the Taguchi analysis the high density and minimum specific wear rate values were achieved at a scan speed of 900 mm/s, a laser power of 300 W, and a hatch spacing of 90 µm.The validation of obtained parameters has been done through Analysis of variance (ANOVA) to develop a linear correlation between the chosen parameters.

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Section: Resultsmentioning

confidence: 95%

Tribological behavior investigation of 316L stainless steel samples processed by selective laser melting

Pant

Nagdeve

Moona

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…In addition, recent studies are focusing on the abrasive/wear resistance of PLA for diverse applications (Eutionnat-Diffo et al, 2020;Mohd et al, 2019). Interestingly, research has shown that there exists a relationship between material hardness and its wear resistance (Faria et al, 2007;Luyckx & Love, 2004;Mezlini et al, 2009). The premise is that the harder the material, the greater the wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Polylactide and its Composites on Various Scales of Hardness

Aworinde¹,

Emagbetere²,

Adeosun³

et al. 2021

JST

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Polylactide (PLA) has become a widely applied material. Its hardness property has, however, not been a subject of intense study. This study attempts to examine the hardness values of Polylactide and its composites on ten hardness scales. Polylactide composites were developed using three reinforcements (i.e., chitosan, chitin, and titanium powders). The compositing method was the melt-blending technique. Vickers microindentation test was carried out on all the developed samples. The experimental values obtained were related to nine (9) other scales of hardness via an online reference interface. Results showed that the Brinell and Rockwell hardness scales agreed, to a large extent, with the experimental values from several studies. Hence, this work can serve as a reference material on the Brinell and Rockwell hardness values of the unreinforced and reinforced composites considered in this study. The developed materials were also represented on the Mohs scale of hardness with unreinforced PLA having the least value of hardness which corresponds to the value of gypsum on the Mohs scale while the PLA reinforced with 8.33 weight (wt.) % of titanium powder has the highest value of hardness corresponding to the value of a material in-between calcite and fluorite. The hardness values obtained on Shore scleroscope could not agree with the experimental values from various studies. Succinctly, the three particulate fillers increased the hardness properties of PLA. The results of this study would go a long way in helping industrialists and researchers in the correct applications of PLA and its composites.

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