| Heat and mass transfer in laser dissimilar welding of stainless steel and nickel | |
Hu YW(胡耀武); He XL(何秀丽) ; Yu G(虞钢); Ge ZF(葛志福); Zheng CY(郑彩云); Ning WJ(宁伟健); He, XL; Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China.
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| Source Publication | APPLIED SURFACE SCIENCE
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| 2012-05-15 | |
| Volume | 258Issue:15Pages:5914-5922 |
| ISSN | 0169-4332 |
| Abstract | Laser spot welding of stainless steel-nickel dissimilar couple has been studied experimentally and numerically. A three-dimensional heat and mass transfer model is used to simulate the welding process, based on the solution of the equations of mass, momentum, energy conservation and solute transport in weld pool. The calculated fusion zone geometry and element distributions are in good agreement with the corresponding experimental results. The role of fluid flow on temperature field and its evolution is analyzed by comparing two cases with and without considering convection. Temperature fields far away from the weld pool are quite similar, but exhibit large difference close to the heat source. During the early stage after formation of weld pool, the distribution of element Fe in weld pool is non-uniform, due to insufficient time for mixing. The speed for mass transport is the highest during the initial stage of weld pool formation and it decreases with time. Both heat and mass transport are significantly influenced by convection during laser spot welding of stainless steel and nickel. |
| Keyword | Laser Dissimilar Welding Heat Transfer Mass Transfer Fluid Flow Metal Composition Change Surface-active Element Pool Development Phase-change Molten Pool Marangoni Flow Transport Solidification Convection Momentum |
| Subject Area | 制造工艺力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000302135700064 |
| Funding Organization | The research was sponsored by National Natural Science of China (grant no. 10972222 and 10832011). |
| Department | MAM激光智能制造工艺力学 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46620 |
| Collection | 先进制造工艺力学实验室 |
| Corresponding Author | He, XL; 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. Heat and mass transfer in laser dissimilar welding of stainless steel and nickel[J]. APPLIED SURFACE SCIENCE,2012,258,15,:5914-5922. |
| APA | 胡耀武.,何秀丽.,虞钢.,葛志福.,郑彩云.,...&Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China..(2012).Heat and mass transfer in laser dissimilar welding of stainless steel and nickel.APPLIED SURFACE SCIENCE,258(15),5914-5922. |
| MLA | 胡耀武,et al."Heat and mass transfer in laser dissimilar welding of stainless steel and nickel".APPLIED SURFACE SCIENCE 258.15(2012):5914-5922. |
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