| TENG Cheng-xin,ZUO Song,ZHAO Kun,LAN Xu-wen,ZHU Hai-yang,ZHANG Yuan-bin.Progress in Surface Modification of Welded Joints[J],43(4):149-157 |
| Progress in Surface Modification of Welded Joints |
| Received:March 08, 2014 Revised:April 15, 2014 |
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| DOI： |
| KeyWord:welded joints surface modification residual stress anti-fatigue fracture |
| Author | Institution |
| TENG Cheng-xin |
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan , China |
| ZUO Song |
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan , China |
| ZHAO Kun |
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan , China |
| LAN Xu-wen |
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan , China |
| ZHU Hai-yang |
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan , China |
| ZHANG Yuan-bin |
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan , China |
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| Abstract: |
| In this paper, the basic principles of high-energy shot blasting, surface mechanical attrition treatment, supersonic particles bombarding, ultrasonic peening, laser shock modified were overviewed. And the results of the modification treatments on the surfaces of welded joints of different materials were emphatically analyzed. These modification methods can make the surface grain of welded joints refinement, and the surface grain size of welded joints can even reach the nanoscale. At the same time, it can also improve the surface hardness of welded joints, and improve the strength of welded components. The residual tensile stress of the joints will disappear, and make the tensile stress change to the residual compressive stress, which can restrain the generation of welded joints crack source, improve the ability of anti-fatigue fracture of welded joints, and further prolong the life span of welding components. It helps us acquire a further understanding of the application domain range as well as the advantages and disadvantages of existing surface modification treatment methods. And this paper also prospected the development and research direction of the welded joints surface modification methods. |
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