| DU Chang,ZHANG Jin,LIAN Yong,YUAN Xiao-min,Michael Y. Huo.Research Progress on Residual Stress in Laser Additive Manufacturing[J],48(1):200-207 |
| Research Progress on Residual Stress in Laser Additive Manufacturing |
| Received:June 26, 2018 Revised:January 20, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.01.026 |
| KeyWord:laser additive manufacturing residual stress determination numerical simulation control |
| Author | Institution |
| DU Chang |
1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing , China; 2.North China Institute of Science and Technology, Langfang , China |
| ZHANG Jin |
1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing , China; 3.Beijing Key Lab for Corrosion, Erosion and Surface Technology, Beijing , China |
| LIAN Yong |
1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing , China; 3.Beijing Key Lab for Corrosion, Erosion and Surface Technology, Beijing , China |
| YUAN Xiao-min |
1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing , China; 3.Beijing Key Lab for Corrosion, Erosion and Surface Technology, Beijing , China |
| Michael Y. Huo |
4.School of Mechanical, Industrial & Manufacturing Engineering, Oregon State University, Corvallis, OR 97331, USA |
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| Abstract: |
| This paper firstly introduces the generation and harm of residual stress in additive manufacturing, identifies that high temperature gradients and heterogeneous phase changes are the primary causes of high residual stress and lists hazards caused by residual stress such as thermal crack, warping, and fatigue failure. Then, the research progress is summarized from the results of the residual stress tests, numerical simulation, and regulation reduction. Experimental measurement includes surface and internal residual stress and adopted methods consist of X-ray diffraction, neutron diffraction and indentation methods. The numerical simulation mainly focuses on the influence of technological parameters and scanning strategy on stress field. Regulation refers to the reduction of stress by controlling parameters during the forming process. Correlational research on decreasing residual stress of formed components by heat treatment and ultrasonic shock are introduced. Finally, it is pointed out that the following monographic studies should be promoted: multi-scale characterization of residual stress from microcosmic to macrocosmic and quantitative measurement of surface and interior residual stress via multiple ways, to lay a foundation for the research on the correlation between residual stress and invalidation. |
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