Effect of shot peening intensity on surface integrity of 18CrNiMo7-6 steel

Wu, Jizhan; Wei, Peitang; Liu, Huaiju; Zhang, Boyu; Tao, Guibao

doi:10.1016/j.surfcoat.2021.127194

Cited by 57 publications

(18 citation statements)

References 48 publications

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“…Examples of shot-peened components are gears [ 1 ], fan blades [ 2 ] and compressor discs of aero-engine [ 3 ]. The impact of a shot peening medium (usually in the form of balls) on the treated surface causes hardening of the surface layer of a workpiece and formation of compressive residual stresses [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Surface Layer Properties and Fatigue Life of a Workpiece Machined by Centrifugal Shot Peening and Burnishing

Skoczylas

Zaleski

2022

Materials

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This paper presents the results of research on the impact of finishing method on surface topography, surface roughness (parameters Ra, Rt, Rpk, Rk, Rvk), surface layer microhardness, residual stresses and fatigue life. Ring samples made of C45 steel were used to conduct the experiments. The following finishing machining methods were selected: slide burnishing, ball burnishing, centrifugal shot peening, centrifugal shot peening + slide burnishing and centrifugal shot peening + ball burnishing. In the first stage, the use of combined shot peening + burnishing enables microhardness to be increased on the surface layer, the values of residual stresses to be increased and the creation of characteristic machining traces on the surface, the so-called “dimples” (effect of centrifugal shot peening). On the other hand, burnishing (slide burnishing or ball burnishing) is aimed at smoothing the surface and providing favorable stereometric properties to the surface layer. It was noted that, after finishing, the surface roughness parameters decreased from 59% to 83% in relation to the reference surface. The exception is the centrifugal shot peening technology. The use of burnishing (slide or ball burnishing) after centrifugal shot peening reduces the surface roughness parameters by a maximum of 82% compared to the value after centrifugal shot peening. The highest increase in microhardness was obtained after centrifugal shot peening + slide burnishing (ΔHV = 105 HV 0.05), while the highest thickness gh (gh = 120 μm) was obtained after centrifugal shot peening + ball burnishing. The combination of centrifugal shot peening and ball burnishing results in the highest absolute value of compressive residual stresses σmax = 602 MPa and depth gσ = 0.41 mm). Application of an additional operation after centrifugal shot peening increases fatigue life from 27% to 49%. ANOVA analysis of variance confirms the significance of the processing effect of centrifugal shot peening combined with slide burnishing (CSP + SB) and centrifugal shot peening + ball burnishing (CSP + BB) on the analyzed dependent surface.

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Section: Introductionmentioning

confidence: 99%

Study on the Surface Layer Properties and Fatigue Life of a Workpiece Machined by Centrifugal Shot Peening and Burnishing

Skoczylas

Zaleski

2022

Materials

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“…Sedangkan pada jarak antara 120 µm dari permukaan memiliki kecenderungan sama nilai kekerasannya. Kecenderungan nilai kekerasan yang sama pada sub permukaan yang dalam sama dengan penelitian sebelumnya (Wu et al, 2021(Wu et al, , 2022. Dampak dari SP pada spesimen yang telah diberikan perlakuan quenching memiliki kedalaman pengaruh pada 120 µm dari permukaan.…”

Section: Efek Pengaruh Shot Peeningunclassified

Gabungan Quenching-Variasi Tekanan Shot peening Terhadap Kekerasan Permukaan dan Struktur Mikro Permukaan Baja S45C

Priyambodo¹,

Margono²,

Yaqin

2022

JQT

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The combination of Quenching and Shot peening (SP) heat treatment is rarely carried out, especially the use of this treatment can improve the mechanical properties of medium carbon steel (S45C). This study aims to analyze the microstructure and hardness of S45C steel with the combined effect of Quenching heat treatment with shot peening with variations in compressor air pressure. Commercial S45C steel is quenched with a heating temperature of 910oC and held for 15 minutes. In comparison, the SP process is carried out after the quenching process with variations in air pressure, namely 4, 5, 6, and 7 bar. Analysis of the combined results of Quenching and SP processes using hardness and microstructure. The investigation analysis results obtained specimens with the highest surface hardness in the quenching and SP treatment of 899.44 HV. The impact of SP on the surface up to a distance of 120 m from the surface. The highest hardness was in the Quenching and SP treatment with a pressure of 7 bar. The results of this study are used as parameter contributions in the area of surface treatment and heat treatment of carbon steel to be developed in the automotive industry.

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“…Surface strengthening technologies have been developed and widely used to increase the performance of load-carrying elements, such as gears and bearings. After those mechanical elements are treated by different surface strengthening technologies, their surface integrity parameters such as surface roughness, hardness, and residual stress were changed [13,14]. Taking the shot peening process as an example, high-speed shot flow impacts the material surface continually, resulting in the refined material microstructure [15], the increased hardness [16], the residual compressive stress layer [17,18], and the different surface micro-topography [19,20].…”

Section: Introductionmentioning

confidence: 99%

A modified model of Lundberg-Palmgren rolling contact fatigue formula considering the effects of surface treatments

et al. 2023

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The Lundberg—Palmgren (L—P) fatigue life formula, as a statistical fatigue theory, has been widely used in the industry. However, its direct applicability is limited to the components treated by surface strengthening technologies. Rolling contact fatigue tests and surface integrity measurements of American Iron and Steel Institute (AISI) 9310 rollers with several surface treatments were performed to address this issue. Based on these results, a modified L—P fatigue model was proposed, enabling the consideration of surface modification including surface roughness, residual stress, and hardening introduced by different surface treatments. Compared with the original L—P fatigue formula, its results are more accurate for surface strengthened specimens. Furthermore, this method can assess the contact fatigue life of gears treated by surface strengthening techniques.

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Effect of shot peening intensity on surface integrity of 18CrNiMo7-6 steel

Cited by 57 publications

References 48 publications

Study on the Surface Layer Properties and Fatigue Life of a Workpiece Machined by Centrifugal Shot Peening and Burnishing

Study on the Surface Layer Properties and Fatigue Life of a Workpiece Machined by Centrifugal Shot Peening and Burnishing

Gabungan Quenching-Variasi Tekanan Shot peening Terhadap Kekerasan Permukaan dan Struktur Mikro Permukaan Baja S45C

A modified model of Lundberg-Palmgren rolling contact fatigue formula considering the effects of surface treatments

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