| 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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| 发表期刊 | APPLIED SURFACE SCIENCE
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| 2012-05-15
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| 卷号 | 258期号:15页码:5914-5922 |
| ISSN | 0169-4332
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| 摘要 | 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. |
| 关键词 | 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
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| 学科领域 | 制造工艺力学
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000302135700064
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| 项目资助者 | The research was sponsored by National Natural Science of China (grant no. 10972222 and 10832011).
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| 课题组名称 | MAM激光智能制造工艺力学
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| 论文分区 | 一类
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/46620
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| 专题 | 先进制造工艺力学实验室
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| 通讯作者 | He, XL; Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China. |
推荐引用方式
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.
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| 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.
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| 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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