Dry sliding wear test on borided AISI 316L stainless steel under ball-on-flat configuration: A statistical analysis

León, Ricardo Andrés García; Martínez-Trinidad, José Fco.; Bautista, Rafael; Campos-Silva, I.; Guevara-Morales, A.; Martínez-Londoño, J.; Saldaña, Juan Gabriel Barbosa

doi:10.1016/j.triboint.2021.106885

Cited by 38 publications

(9 citation statements)

References 35 publications

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“…The 8.26B sample had the lowest wear rate among the samples (k=0.9 x 10 -6 mm 3 /Nm), and the narrowest wear track, as observed in Fig. 5 (e) and (f), which is expected, since the wear rate is usually related to the hardness of the material [51,52], and sample 8.26B, containing the FeB phase, showed the higher surfaces hardness among the studied conditions. Previous results also showed higher wear abrasion resistance of the FeB phase over the Fe 2 B phase [53].…”

Section: Wear Behaviorsupporting

confidence: 63%

“…Tribo lms can be observed at the surface of the samples. These lms result from material agglomeration after debris adhere and cluster due to mechanical contacts at the surface, as previously observed [21,51]. Heavily oxidized tribo lms, identi ed as smearing, can be seen inside and on the sides of the wear tracks, mostly in the 8.26B specimen.…”

Section: Wear Behaviorsupporting

confidence: 63%

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Effects of boron concentration on the microstructure, mechanical and tribological properties of powder-pack borided AISI 4140 steel

Silveira

Pukasiewicz²,

Souza³

et al. 2022

Preprint

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Three different boron amounts were used in this study to control the microstructure, mechanical, and tribological properties of borided cases on AISI 4140 steel. A single Fe2B phase was observed for the lowest boron amount, while both Fe2B and FeB phases were present on the other two boron compositions. The highest surface hardness was observed in the highest boron amount. The scratch tests revealed different cohesive failure mechanisms on the samples, such as arc and chevron tensile cracks, and even chipping was observed for all three-studied boron amounts; it appeared at lower applied loads for the highest boron amount, indicating a likely detachment of the fragile FeB layer. The borided layers presented abrasive wear during the ball-on-flat wear tests. Despite the lower specific wear rate, the surface damage was more severe in the sample with the highest boron amount, due to its brittleness, resulting in lower resistance to surface fatigue.

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Section: Wear Behaviorsupporting

confidence: 63%

Section: Wear Behaviorsupporting

confidence: 63%

Effects of boron concentration on the microstructure, mechanical and tribological properties of powder-pack borided AISI 4140 steel

Silveira

Pukasiewicz²,

Souza³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The contact pressures are affected during motion and sliding speed, which generated the combination of the failure mechanisms, wear modes and superficial heating, which depends on the typology test. [56,57] The wear trace on the Al 2 O 3 ball can be a consequence of the harder material fragments (wear particles/ debris) attached to the contact area during sliding. Previous studies showed that, until the boride layer is removed, the wear mechanism and the CoF on PPBP and PPBP + DAP remain constant in the steady-state of sliding; thus, the generated debris is the same as the one expelled.…”

Section: Numerical Resultsmentioning

confidence: 99%

Dry Sliding Wear Test on Borided AISI 1018 Steel Under Pin-on-Disc Configuration

Sánchez-Islas

Martínez-Trinidad

Campos-Silva

et al. 2021

Metall Mater Trans A

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New results about the influence of a small iron borided layer (~36 lm) obtained by the powder-pack boriding process (PPBP) and diffusion annealing post-process (DAP) were evaluated. Dry sliding wear tests on PPBP, PPBP + DAP and untreated AISI 1018 steel were performed under the pin-on-disc configuration, and balls of Al 2 O 3 and WC were used as a counterpart at different sliding distances. Also, the contact pressures of the layer/substrate system were evaluated using the finite element model with the aid of the ABAQUS software. The results showed that the Al 2 O 3 ball presented the major coupling (ball-disc), and the PPBP + DAP reduces the specific wear rate around ~304 times related to the untreated AISI 1018 steel to 500 m under severe sliding conditions.

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“…The Response Surface Methodology (RSM) and the Distance Weighted Least Squares (DWLS) fitting model were used with the aid of statistical software to plot the behavior of the different mechanical and dynamic parameters such as speed, inclination angle on the response variable as power dissipated by the braking system, braking time, and braking distance [35]. The aim of surface plots (2D maps) is to describe the behavior of a response variable in a function of different parameters.…”

Section: Response Surface Mapsmentioning

confidence: 99%

Mechanical and Dynamic Maps of Disc Brakes under Different Operating Conditions

León

García

Camperos

2021

Fluids

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The operating conditions during the braking process in an automobile affect the tribological contact between the pad and disc brake, thus, influencing the times and distances of braking and, in a more significant way, the safety of the braking process. This mathematical work aimed to provide a general visualization of the disc brake’s mechanical, dynamic, and thermal behavior under different operating conditions through 2D maps of the power dissipated, braking time, and braking distance of a disc brake with a ventilation blade N- 38 type. However, the dissipated energy on the disc brake in terms of temperature was analyzed considering Newton’s cooling law and mathematical calculations through classical theories of the dynamic and mechanical behavior of the disc brakes. For this purpose, the Response Surface Methodology (RSM) and Distance Weighted Least Squares (DWLS) fitting model considered different operating conditions of the disc brake. The results demonstrate that the disc brakes can be used effectively in severe operational requirements with a speed of 100 km/h and an ambient temperature of 27 °C, without affecting the occupant’s safety or the braking system and the pad. For the different conditions evaluated, the instantaneous temperature reaches values of 182.48 and 82.94 °C, where the high value was found for a total deceleration to 100 km/h to 0, which represent a total braking distance of around 44.20 to 114.96 m depending on the inclination angle (θ). Furthermore, the energy dissipation in the disc brakes depends strongly on the disc, blades and pad geometry, the type of material, parameters, and the vehicle operating conditions, as can be verified with mathematical calculation to validate the contribution of the effectiveness of the braking process during its real operation.

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Dry sliding wear test on borided AISI 316L stainless steel under ball-on-flat configuration: A statistical analysis

Cited by 38 publications

References 35 publications

Effects of boron concentration on the microstructure, mechanical and tribological properties of powder-pack borided AISI 4140 steel

Effects of boron concentration on the microstructure, mechanical and tribological properties of powder-pack borided AISI 4140 steel

Dry Sliding Wear Test on Borided AISI 1018 Steel Under Pin-on-Disc Configuration

Mechanical and Dynamic Maps of Disc Brakes under Different Operating Conditions

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