| Experimental and numerical study on laser keyhole welding of 42CrMo under air and argon atmosphere | |
Hu YW(胡耀武); He XL(何秀丽) ; Yu G(虞钢); Li SX(李少霞); Zheng CY(郑彩云); Ning WJ(宁伟健); Hu, YW; He, XL; Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China.
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| Source Publication | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
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| 2017-06-01 | |
| Volume | 90Issue:9-12Pages:3555-3565 |
| ISSN | 0268-3768 |
| Abstract | Laser keyhole welding of 42CrMo in air and argon atmospheres has been studied both experimentally and numerically. Significant macroscale difference is observed for welding carried out under argon and air shielding. Fusion zone of welding under argon shielding has a "a-1/2" shape while it has a "U" shape for welding in air. The surface of the weldment is smoother for welding in argon when compared with that in air. Oxygen effect is proposed to account for the experimental results. A three-dimensional heat transfer model with a predefined keyhole is developed to study the heat transport and fluid flow in laser welding process. The variation of weld pool geometry and temperature history is investigated for different oxygen concentrations. It is found that a small amount of oxygen could significantly modify the weld pool dimension while keeping the temperature history of materials and thus the microstructure in the fusion zone and heat-affected zone unchanged. |
| Keyword | Laser Welding Keyhole Welding Shielding Gas Fluid Flow |
| DOI | 10.1007/s00170-016-9679-9 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000401505000096 |
| WOS Keyword | AUSTENITIC STAINLESS-STEEL ; MARANGONI CONVECTION ; HEAT-TRANSFER ; FLUID-FLOW ; PENETRATION ; METAL ; OXIDE ; MICROSTRUCTURE ; SIMULATION ; OXYGEN |
| WOS Research Area | Automation & Control Systems ; Engineering |
| WOS Subject | Automation & Control Systems ; Engineering, Manufacturing |
| Funding Organization | National Natural Science Foundation of China(11272317 ; 11272316) |
| Department | MAM激光智能制造工艺力学 |
| Classification | 二类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/60553 |
| Collection | 先进制造工艺力学实验室 |
| Corresponding Author | Hu, YW; He, XL; Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Hu YW,He XL,Yu G,et al. Experimental and numerical study on laser keyhole welding of 42CrMo under air and argon atmosphere[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2017,90(9-12):3555-3565. |
| APA | 胡耀武.,何秀丽.,虞钢.,李少霞.,郑彩云.,...&Yu, G .(2017).Experimental and numerical study on laser keyhole welding of 42CrMo under air and argon atmosphere.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,90(9-12),3555-3565. |
| MLA | 胡耀武,et al."Experimental and numerical study on laser keyhole welding of 42CrMo under air and argon atmosphere".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 90.9-12(2017):3555-3565. |
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| JouAr-2017-043.pdf（2690KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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