Effect of laser shock peening on corrosion resistance of 316L stainless steel laser welded joint

Li, Dongwei; Shi, Yan; Jia, Lei; Wen, Long

doi:10.1016/j.surfcoat.2019.07.048

Cited by 29 publications

(4 citation statements)

References 59 publications

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“…It helps minimize the microcracks between intermetallic and matrix steels (Guan et al, 2022) and suppress the penetration of Cl À through the passive film (Trdan and Grum, 2012). However, other investigations confirmed that a similar (Liu et al, 2019) or even worse (Guan et al, 2021) pitting resistance was obtained after the LSP treatment, which may be resulted from the increase in surface roughness as mentioned in Table 1. Compared with SP and LSP, WJP is a surface strengthening technology introducing lower materials damage and middle magnitude residual compressive stress as discussed in Section 3.1.…”

Section: Effect Of Surface Peening On Corrosion Behavior Of Stainless...mentioning

confidence: 96%

Progress on microstructure and residual stress evolution and corrosion behavior in SP-, LSP- and WJP-treated austenitic stainless steels

Ming

Peng

Han

et al. 2023

ACMM

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Purpose This paper aims to review the effect of traditional shot peening (SP), laser shock peening (LSP) and water jet cavitation peening (WJP) on microstructure evolution and corrosion behavior of austenitic stainless steels 316L and 304. Design/methodology/approach The effect of SP, LSP and WJP on corrosion behavior of 316L and 304 were discussed in terms of surface peening–induced change in surface roughness, stress state and grain size. Findings Residual compressive stress and grain refinement were introduced after SP, LSP and WJP treatment in 316L and 304 stainless steels. Superior corrosion resistance can be obtained by WJP compared with SP and LSP. Originality/value The relationship between SP-, LSP- and WJP-induced change in microstructure and stress state and corrosion resistance was summarized.

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Section: Effect Of Surface Peening On Corrosion Behavior Of Stainless...mentioning

confidence: 96%

Progress on microstructure and residual stress evolution and corrosion behavior in SP-, LSP- and WJP-treated austenitic stainless steels

Ming

Peng

Han

et al. 2023

ACMM

View full text Add to dashboard Cite

show abstract

“…Corrosion properties by surface modification have recently been studied as follows: Shot peening on the corrosion of aluminum alloy [ 19 , 20 ] and the corrosion properties of stainless steel [ 21 , 22 ]; laser peening on the corrosion of Alloy 600 [ 23 ], the corrosion of 304 stainless steel [ 24 ], the corrosion of stainless steels [ 25 , 26 , 27 , 28 , 29 ], the corrosion of aluminum alloy [ 30 ], and the corrosion of magnesium alloy [ 31 ]; UNSM on the corrosion of nickel base alloys [ 32 , 33 , 34 ] and the corrosion of stainless steels [ 35 , 36 , 37 , 38 ]; and comparison between laser peening, shot peening, and ultrasonic peening [ 8 ]. Most recent research efforts on surface modification methods have shown beneficial effects on the corrosion of various alloys [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ]. In some cases, detrimental effects of surface modification methods can be induced.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Peening on the Corrosion Properties of 304L Stainless Steel

2023

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Dry canisters used in nuclear power plants can be subject to localized corrosion, including stress corrosion cracking. External and residual tensile stress can facilitate the occurrence of stress corrosion cracking. Residual stress can arise from welding and plastic deformation. Mitigation methods of residual stress depend upon the energy used and include laser peening, ultrasonic peening, ultrasonic nanocrystal surface modification, shot peening, or water jet peening. Among these, laser peening technology irradiates a continuous laser beam on the surface of metals and alloys at short intervals to add compressive residual stress as a shock wave is caused. This research studied the effect of laser peening with/without a thin aluminum layer on the corrosion properties of welded 304L stainless steel. The intergranular corrosion rate of the laser-peened specimen was a little faster than the rate of the non-peened specimen. However, laser peening enhanced the polarization properties of the cross-section of 304L stainless steel, while the properties of the surface were reduced by laser peening. This behavior was discussed on the basis of the microstructure and residual stress.

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“…As an alternative, peening techniques can introduce high-level residual compressive stress, microhardness, grain refinement, and strength to the steel surface, and thus are an ideal technique for the post-process of SLM 316L SS [ 27 , 29 ]. Due to its benefits in reliability and environmental adaptability [ 30 ], laser shot peening is the most widely used peening method for enhancing the mechanical properties of SLM 316L SS components. Nevertheless, some negative effects, such as oxidization, high-temperature stain, and high cost, are induced during the processing [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Strength–Ductility Synergy Properties in Selective Laser Melted 316L Stainless Steel by Strengthening Grinding Process

et al. 2022

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Selective laser melted (SLM) 316L stainless steel (SS) has been widely employed in the fields of designing and manufacturing components with complex shapes and sizes. However, the low yield strength, low ultimate tensile stress, and low hardness of SLM 316L SS components hinder its further application. In this work, the strengthening grinding process (SGP) was used to enhance the mechanical properties of SLM 316L SS. The microhardness, residual stress, microstructure, and tensile properties of all the samples were analyzed. The results demonstrate that the SGP induced higher compressive residual stress and microhardness, as well as higher tensile properties. The maximum hardness and residual stress reached 354.5 HV and −446 MPa, respectively, indicating that the SGP resulted in a plastic deformation layer over 150 μm. The possible mechanisms have been discussed in further detail. Compared to the untreated sample, the SGP sample shows a significant improvement in yield strength (YS), ultimate tensile stress (UTS), and elongation (EL), increasing 30%, 25.5%, and 99.1%, respectively. This work demonstrates that SGP treatment could be an efficient approach to simultaneously improving the strength and ductility of the SLM 316L SS, which makes it more suitable for engineering applications.

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Effect of laser shock peening on corrosion resistance of 316L stainless steel laser welded joint

Cited by 29 publications

References 59 publications

Progress on microstructure and residual stress evolution and corrosion behavior in SP-, LSP- and WJP-treated austenitic stainless steels

Progress on microstructure and residual stress evolution and corrosion behavior in SP-, LSP- and WJP-treated austenitic stainless steels

Effect of Laser Peening on the Corrosion Properties of 304L Stainless Steel

Enhanced Strength–Ductility Synergy Properties in Selective Laser Melted 316L Stainless Steel by Strengthening Grinding Process

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