Investigating the effect of laser shock peening on the wear behaviour of selective laser melted 316L stainless steel

Hareharen, K; S, Pradeep Kumar; Panneerselvam, T; P, Dinesh Babu; Sriraman, N.

doi:10.1016/j.optlastec.2023.109317

Cited by 21 publications

(2 citation statements)

References 47 publications

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“…Therefore, the friction coefficient increases steeply at initial stage. In addition, laser shocking generates a harden layer that effectively enhancing the surface hardness and relieving the wear (Hareharen et al, 2023). Thus, a relatively lower friction coefficient is presented.…”

Section: Variation Of Friction Coefficientmentioning

confidence: 99%

“…In summary, the published papers that specifically investigate the influences of LP on the three-dimensional morphology of samples treated with different overlapped rates, microstructure evolution, mechanical and wear properties of 304 stainless steel are not much enough. Therefore, it is essential to comprehensively explore the effect of LP on surface modification of 304 stainless steel and evaluate the wear behaviors of LP treated (LPed) sample at low friction loads of 10 and 30 N. Besides, compared to previous studies (Hareharen et al, 2023;Yakimets et al, 2004), the lower laser energy of 4 J, energy density of 2.83 GW/ cm 2 and overlapped rate of 50% are applied in this test.…”

Section: Introductionmentioning

confidence: 99%

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Effect of multiple laser peening on the wear resistance of 304 stainless steel

Li,

Liu,

Zhang

et al. 2024

ILT

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Purpose The purpose of this paper is to investigate the effect of laser peening (LP) on mechanical and wear properties of 304 stainless steel sheet. Design/methodology/approach Three-dimensional morphology, micro-hardness and micro-structure of shocked samples were tested. The wear amount, wear track morphology and wear mechanism were also characterized under dry sliding wear using Al2O3 ceramics ball. Findings The LP treatment generates deformation twins that contribute to the grain refinement and hardness increase. The wear test displays that the wear mechanism of samples is mainly abrasive wear and oxidation wear at 10 N load. While at 30 N, the delamination and adhesion areas of treated sample are reduced visibly compared to untreated ones. Originality/value This study specifically investigates the mechanical and wear properties of 304 stainless steel after the direct action of LP on its surface, which shows an effective improvement on the wear resistance. For example, the wear loss of processed sample is reduced by 19% at 30 N, the friction coefficient decreases from 0.4714 to 0.4308 and the groove depth is reduced from 78.1 to 74.4 µm under same condition. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-01-2024-0007/

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Section: Variation Of Friction Coefficientmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%