Effect of an absorbent overlay on the residual stress field induced by laser shock processing on aluminum samples

Rubio-González, C.; Gómez-Rosas, G.; Ocaña, J.L.; Molpeceres, C.; Banderas, A.; Porro, J.A.; Morales, M.

doi:10.1016/j.apsusc.2005.08.062

Cited by 91 publications

(35 citation statements)

References 9 publications

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“…The observation of these results clearly leads to the consideration of the LSP technique as really effective and controllable within wide limits for the induction of engineered residual stresses fields in critical components through modification of specific mechanical and chemical material properties, especially mechanical fatigue and corrosión resistance. The effect has been widely demonstrated by the authors in simple geometries [11][12][13][14] and, with the aid of the developed calculational tools [9][10], can be readily applied to arbitrary component geometries.…”

Section: Discussionmentioning

confidence: 99%

“…More recently, on the basis of the commercial availability of new powerful láser sources able to provide intensities exceeding the GW/cm level, a new intense research effort aims to develop the LSP technology from an industrial point of view [5][6][7][8]. The authors have made previous contributions to the field showing initial results of their developments [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Induction of Engineered Residual Stresses Fields and Associate Surface Properties Modification by Short Pulse Laser Shock Processing

Ocaña

Morales

Porro

et al. 2010

MSF

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Láser shock processing (LSP) is consolidating as an effective technology for the improvement of metallic materials surface properties involving their fatigue life. The main acknowledged advantage of the LSP technique consists on its capability of inducing a relatively deep compression residual stresses field into metallic alloy pieces allowing an improved mechanical behaviour, explicitly the life improvement of the treated specimens against wear, crack growth and stress corrosión cracking. Progress accomplished by the authors in the line of practical development of the LSP technique at an experimental level, aiming its integral assessment from an interrelated theoretical and experimental point of view, is presented in this paper. Concretely, experimental results on the residual stress profiles and associated surface properties modification successfully reached in typical materials (especially Al and Ti alloys) under different LSP irradiation conditions are presented, a correlated analysis of the residual stress profiles obtained under different irradiation strategies and the evaluation of the corresponding induced surface properties as roughness and wear resistance being also presented. Through a coupled theoretical-experimental analysis the real possibilities of the LSP technique as a possible substitutive of related traditional surface modification techniques as, for example, shot peening.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Induction of Engineered Residual Stresses Fields and Associate Surface Properties Modification by Short Pulse Laser Shock Processing

Ocaña

Morales

Porro

et al. 2010

MSF

Self Cite

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“…Fan et al (2005) and Morales et al (2009) stated that laser vaporizes the ablative layer to form high density plasma. Rubio-González et al (2006) have shown that the vaporization of the sacrificial layer minimizes undesirable thermal effects on the surface. Fairland et al (1972) reported that the plasma, confined by a thin layer of water film, expands rapidly resulting in a recoiling pressure wave on the order of GPa.…”

Section: Surface Texturing By Laser Shock Peeningmentioning

confidence: 98%

Fabrication and characterization of micro dent arrays produced by laser shock peening on titanium Ti–6Al–4V surfaces

Guo

Caslaru

2011

Journal of Materials Processing Technology

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“…Aluminum foil with a thickness of 0.15 mm was used as the absorbing layer to protect the specimen surface from thermal ablation and water with a thickness of 1-1.5 mm was used as the transparent layer to increase the peak pressure of laser shock waves and the impulse action time in specimens [14] .…”

Section: Methodsmentioning

confidence: 99%

Cyclic oxidation resistance of In718 superalloy treated by laser peening

Bai

Hua

Rong

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The aim of this study was to improve the cyclic oxidation resistance of In718 superalloy by laser peening(LP). Specimens were treated by LP from one to three times, respectively. The cyclic oxidation tests at 900 ℃ for periods up to 2 h were conducted. Changes of the top surface morphology and microstructure were analyzed by scanning electron microscope (SEM), energy-dispersive spectra (EDS), transmission electron microscope (TEM) and X-ray diffraction technique (XRD), respectively. The weights were measured between the oxidation cycles to assess the oxidation of the specimens. The top surface microstructure after LP was characterized by highly tangled and dense dislocation arrangements and a high amount of twins. Protective oxidation layer was generated more quickly on the surface treated by LP. The average oxidation rate was about 50 % lower. A tiny homogeneous oxidation layer containing (Fe,Cr) 2 O 3 , NiCrO 3 and Ni(Al,Cr) 2 O 4 spinel was generated on the surface. The experimental results of cyclic oxidation tests show that specimens treated by LP have a better high temperature oxidation resistance, and the antistrip performance of the oxidation layer improves. Moreover, the effects of LP are strengthened with the increase of laser peening.

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Effect of an absorbent overlay on the residual stress field induced by laser shock processing on aluminum samples

Cited by 91 publications

References 9 publications

Induction of Engineered Residual Stresses Fields and Associate Surface Properties Modification by Short Pulse Laser Shock Processing

Induction of Engineered Residual Stresses Fields and Associate Surface Properties Modification by Short Pulse Laser Shock Processing

Fabrication and characterization of micro dent arrays produced by laser shock peening on titanium Ti–6Al–4V surfaces

Cyclic oxidation resistance of In718 superalloy treated by laser peening

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