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      Improvement in Fatigue Performance of Aluminium Alloy Welded Joints by Laser Shock Peening in a Dynamic Strain Aging Temperature Regime

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          Abstract

          As a new treatment process after welding, the process parameters of laser shock peening (LSP) in dynamic strain aging (DSA) temperature regimes can be precisely controlled, and the process is a non-contact one. The effects of LSP at elevated temperatures on the distribution of the surface residual stress of AA6061-T6 welded joints were investigated by using X-ray diffraction technology with the sin 2 ϕ method and Abaqus software. The fatigue life of the welded joints was estimated by performing tensile fatigue tests. The microstructural evolution in surface and fatigue fractures of the welded joints was presented by means of surface integrity and fracture surface testing. In the DSA temperature regime of AA6061-T6 welded joints, the residual compressive stress was distributed more stably than that of LSP at room temperature. The thermal corrosion resistance and fatigue properties of the welded joints were also improved. The experimental results and numerical analysis were in mutual agreement.

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          Most cited references30

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          Physical study of laser-produced plasma in confined geometry

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            Laser shock processing and its effects on microstructure and properties of metal alloys: a review

            C Montross (2002)
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              • Record: found
              • Abstract: not found
              • Article: not found

              Residual stress. Part 2 – Nature and origins

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                Author and article information

                Contributors
                Role: Academic Editor
                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                26 September 2016
                October 2016
                : 9
                : 10
                : 799
                Affiliations
                [1 ]School of Mechnical Engineering, Jiangsu University, Zhenjiang 212013, China; zhoujz@ 123456ujs.edu.cn (J.Z.); xiankaimeng@ 123456gmail.com (X.M.); huangs@ 123456ujs.edu.cn (S.H.)
                [2 ]School of Mechanical & Vehicle Engineering, Changzhou Institute of Technology, Changzhou 213000, China
                Author notes
                [* ]Correspondence: suc@ 123456czu.cn ; Tel.: +86-519-8530-2137; Fax: +86-519-8521-7686
                Article
                materials-09-00799
                10.3390/ma9100799
                5456636
                88de1095-0bc8-4737-bba4-a7fea2a03ced
                © 2016 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 20 August 2016
                : 22 September 2016
                Categories
                Article

                laser shock peening,aa6061-t6 welded joint,dynamic strain aging,residual stress,high-cycle fatigue,fracture

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