The effects of shot peening, laser shock peening and ultrasonic nanocrystal surface modification on the fatigue strength of Inconel 718

Maleki, Erfan; Ünal, Okan; Guagliano, Mario; Bagherifard, Sara

doi:10.1016/j.msea.2021.141029

Cited by 176 publications

(45 citation statements)

References 47 publications

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“…Peening is a technique for surface modification that has been widely used over the past five decades. Scholars demonstrated that these peening techniques significantly enhanced surface mechanical properties [ 33 , 34 , 35 , 36 ], refined the surface microstructure [ 37 , 38 , 39 ], induced RCS [ 40 , 41 , 42 ], and changed the surface topography [ 43 , 44 ]. Generally, SP, UIP, LSP have been the most widely used peening techniques for surface modification.…”

Section: Peening Techniquesmentioning

confidence: 99%

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Peening Techniques for Surface Modification: Processes, Properties, and Applications

et al. 2021

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Surface modification methods have been applied to metals and alloys to change the surface integrity, obtain superior mechanical properties, and improve service life irrespective of the field of application. In this review paper, current state-of-the-art of peening techniques are demonstrated. More specifically, classical and advanced shot peening (SP), ultrasonic impact peening (UIP), and laser shock peening (LSP) have been discussed. The effect of these techniques on mechanical properties, such as hardness, wear resistance, fatigue life, surface roughness, and corrosion resistance of various metals and alloys, are discussed. This study also reports the comparisons, advantages, challenges, and potential applications of these processes.

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Section: Peening Techniquesmentioning

confidence: 99%

“… Schematic illustration of different peening techniques and the corresponding plastically deformed top surface of the target material: ( a ) SP; ( b ) UIP; ( c ) LSP. Reproduced with permission from [ 44 ]. Copyright Elsevier, 2021.…”

Section: Figurementioning

confidence: 99%

Peening Techniques for Surface Modification: Processes, Properties, and Applications

et al. 2021

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“…The number of cycles to failure increases by decreasing stress amplitude until the S-N curve turns into a horizontal line at a particular limiting stress. This value is the fatigue limit endurance upto which the material can bear an infinite number of cycles without failure [54,55]. The fatigue limit endurance may be measured through the JSME S 002 standard [56] and using the staircase method.…”

Section: Fatigue Testmentioning

confidence: 99%

Influences of Shot Peening Parameters on Mechanical Properties and Fatigue Behavior of 316 L Steel: Experimental, Taguchi Method and Response Surface Methodology

2021

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Severe plastic deformation methods like shot peening (SP) are known as efficient surface treatments and grain refining processes which afford more effective properties in metallic materials. In the current research, a comprehensive study was carried out on SP of AISI 316 L steel. It included 42 different SP treatments with a wide range of Almen intensities of 12–27 A and various coverage degrees (100%–1500%). Several experimental tests were conducted in order to explore the microstructure, grain size, surface topography, hardness, wettability, and residual stresses of the specimens. Next, two different approaches including Taguchi method (TM), and response surface methodology (RSM) were deployed for modeling, analysis, and optimization. RSM and TM were used to examine the influence of the effective parameters. Based on the optimized results, the fatigue behavior of the selected treatments was investigated experimentally in both smooth and notched specimens. Graphical abstract

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“…Maleki et al [1] studied several surface-severe plastic deformation techniques, including severe shot peening, laser shock peening, and ultrasonic nanocrystal surface modification; they investigated the effects of process parameters and the kinetic energy the surface quality, hardness, and corrosion resistance of 60/40 brass using a novel process, called flexible magnetic burnishing brush (FMBB), using cylindrical stainless steel pins as magnetic burnishing particles under only two permanent magnets. They showed that the burnishing speed and feed rate determine the surface quality and homogeneity, improving the microhardness by 40%, microroughness by 76%, and corrosion rate at a certain range of speed and feed rate.…”

Section: Introductionmentioning

confidence: 99%

“…A nonlinear prediction of microhardness using Equation (1) shows that microhardness increases as speed and feed rate increase, but with more weight in favor of the speed.…”

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confidence: 99%

Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass

et al. 2021

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Surface work hardening is a process of deforming a material surface using a thin layer. It hardens and strengthens the surface while keeping the core relatively soft and ductile to absorb stresses. This study introduces a permanent magnate surface work hardening under two opposite permanent poles of a magnet to investigate its influence on a brass surface. The gap between the brass and the north magnet pole—fixed in the spindle of a vertical machine—was filled with martensitic stainless steel balls. The rotational speed and feed rates were 500–1250 rpm and 6–14 mm min−1, respectively. The novel method improved the surface hardness for all parameters by up to 112%, in favor of high speed, and also increased yield by approximately 10% compared to ground samples. Surface roughness showed higher values for all speed–feed rate combinations compared to the ground sample. Nevertheless, it showed better roughness than other treated conditions with high and low feed rates. The ultimate tensile strength and ductility remained unchanged for all conditions other than the untreated brass. A factorial design and nonlinear regression analysis were performed to predict the microhardness equation and effectiveness of the independent variable—speed and feed rate—for the proposed process.

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The effects of shot peening, laser shock peening and ultrasonic nanocrystal surface modification on the fatigue strength of Inconel 718

Cited by 176 publications

References 47 publications

Peening Techniques for Surface Modification: Processes, Properties, and Applications

Peening Techniques for Surface Modification: Processes, Properties, and Applications

Influences of Shot Peening Parameters on Mechanical Properties and Fatigue Behavior of 316 L Steel: Experimental, Taguchi Method and Response Surface Methodology

Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass

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