The effects of laser peening on laser additive manufactured 316L steel

Lu, Yi; Wang, Z. D.; Su, Boyong; Zhang, Y. K.; Ni, Zhen Hua

doi:10.1007/s00170-020-05167-3

Cited by 23 publications

(7 citation statements)

References 21 publications

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“…The effect of LP on the mechanical properties of AM parts has been discussed in the literature. For example, LP technology has also been applied to improve the surface and mechanical properties of machined maraging steels 179–181 . Maharjan et al 182 examine the effect of laser shock peening on the near‐surface properties of Ti6Al4V and Al6061‐T6 alloys and how these changes affect their fatigue behavior.…”

Section: Effects Of Postproduction Processes On Fatigue Life Of Metal...mentioning

confidence: 99%

“…steels. [179][180][181] Maharjan et al 182 examine the effect of laser shock peening on the near-surface properties of Ti6Al4V and Al6061-T6 alloys and how these changes affect their fatigue behavior. Hackel et al 166 concluded that peening with laser shock waves on the surface of titanium and stainless steel parts produced by AM improves fatigue life.…”

Section: Chemical and Electrochemical Polishingmentioning

confidence: 99%

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An overview of factors affecting high‐cycle fatigue of additive manufacturing metals

Karakaş

Kardeş

Foti³

et al. 2023

Fatigue Fract Eng Mat Struct

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Recently, additive manufacturing technologies have become very important in the industry as they increase the freedom of design and provide the opportunity to realize very complex shapes in one step. Since the use of additive manufacturing has increased in addition to conventional manufacturing methods, the fatigue behavior of engineering materials such as AlSi10Mg, 316L, Ti6Al4V, and Ti64 produced by different additive manufacturing methods is reviewed. In this article, a detailed literature review is presented by evaluating recent studies on the high‐cycle and very high‐cycle fatigue behavior of engineering components produced with additive manufacturing technologies. In addition to the positive properties of additive manufacturing metals, fatigue performance is adversely affected due to negative properties such as high porosity, poor surface quality, and tensile residual stresses. In this article, factors affecting fatigue strength and postproduction processes required for the production of fatigue‐resistant additive manufacturing parts are explained.

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Section: Effects Of Postproduction Processes On Fatigue Life Of Metal...mentioning

confidence: 99%

Section: Chemical and Electrochemical Polishingmentioning

confidence: 99%

An overview of factors affecting high‐cycle fatigue of additive manufacturing metals

Karakaş

Kardeş

Foti³

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Laser peening is widely utilized to improve the fatigue life of compressor blades and jet engine fans, most recently in nuclear-spent fuel storage tanks and aircraft structures [90]. Laser peening technology has also been applied to improve the surface properties of processed maraging steels [92][93][94], as well as bend and stretch the thick sections of aircraft fenders to provide accurate aerodynamic models. In the laser peening processes, the short intense laser pulse generates plasma in the confined geometry and thereby produces pressure pulses, causing local plastic deformations.…”

Section: Laser Peeningmentioning

confidence: 99%

A Review of Post-Processing Technologies in Additive Manufacturing

Peng

Kong

Fuh

et al. 2021

JMMP

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Additive manufacturing (AM) technology has rapidly evolved with research advances related to AM processes, materials, and designs. The advantages of AM over conventional techniques include an augmented capability to produce parts with complex geometries, operational flexibility, and reduced production time. However, AM processes also face critical issues, such as poor surface quality and inadequate mechanical properties. Therefore, several post-processing technologies are applied to improve the surface quality of the additively manufactured parts. This work aims to document post-processing technologies and their applications concerning different AM processes. Various types of post-process treatments are reviewed and their integrations with AM process are discussed.

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“…In addition, key components require hard surface layers and good surface quality. Surface deformation strengthening methods, such as shot peening (SP) [5,6], laser shot peening (LSP) [7,8], surface mechanical grinding treatment (SMGT) [9,10] and surface mechanical attrition treatment (SMAT) [11,12] can generate a beneficial microstructure and compressive residual stress to induce property enhancements. The surface deformation strengthening technology means to make the surface produce a certain degree of plastic deformation led to the forming of a certain depth of the deformation layer, which can improve the material properties [13].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Integrity in 18CrNiMo7-6 Steel after Multiple Abrasive Waterjet Peening Process

Zou

et al. 2020

Metals

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Abrasive waterjet peening (AWJP) as an important surface strengthening method can effectively improve surface properties. In this study, after multiple AWJP, the distribution of compressive residual stress and roughness on the surface of 18CrNiMo7-6 steel has been evaluated by an X-ray diffraction (XRD) method and a 3D surface topography system, respectively. Compared with the single AWJP, multiple AWJP can obviously increase the surface residual stresses (−1024 MPa to −1455 MPa) and the depth of maximum compressive residual stress (100 μm to 120 μm), as well as make the stress distribution more uniform. In terms of the surface roughness, multiple AWJP influences its uniform distribution and reduces the surface roughness (Sa = 0.69 μm), compared with a single AWJP (Sa = 2.96 μm), due to the smaller shot balls and a uniform deformation during multiple AWJP. In addition, we have studied the effects of multiple AWJP on the hardness of the surface layer. The results show that multiple AWJP increases the hardness by up to 15.9%, compared to the single AWJP. These studies provide useful insight into improving the surface properties of 18CrNiMo7-6 steel by multiple AWJP.

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The effects of laser peening on laser additive manufactured 316L steel

Cited by 23 publications

References 21 publications

An overview of factors affecting high‐cycle fatigue of additive manufacturing metals

An overview of factors affecting high‐cycle fatigue of additive manufacturing metals

A Review of Post-Processing Technologies in Additive Manufacturing

Evaluation of Surface Integrity in 18CrNiMo7-6 Steel after Multiple Abrasive Waterjet Peening Process

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