Study on molten pool flow and hot cracking of narrow gap laser welding of 316LN stainless steel for fusion reactor
文献类型：期刊论文
| 作者 | Jing, Huang; Chao, Fang ; Jin, Liu; Jing, Wei
|
| 刊名 | OPTICS AND LASER TECHNOLOGY
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 181 |
| 关键词 | 316LN Laser welding Molten pool flow Hot cracks |
| ISSN号 | 0030-3992 |
| DOI | 10.1016/j.optlastec.2024.111633 |
| 通讯作者 | Chao, Fang(fangchao@ipp.ac.cn) |
| 英文摘要 | In this paper, narrow-gap laser welding (NGLW) of 316LN stainless steel was studied. The results indicated that continuous laser welding with filler wire (CLWFW) and pulsed laser welding with filler wire (PLWFW) can obtain good weld formation under the transition of the wire bridge, and when the pulsed laser was a trapezoidal wave, the hot cracks of the filling layer can be greatly inhibited. The intermittent output of the pulsed laser reduced the temperature gradient of the molten pool and enhanced the morphology of the caudal region of the molten pool. Meanwhile, timely liquid backfilling effectively relieved the stress concentration of the weld, thus inhibiting the generation of hot cracks. Besides, the intermittent pulse energy input had a stirring effect on the molten pool, which disturbed the growth direction of the dendrite grain and refined the grain; consequently, the impurity elements were fully diffused, and the distribution of elements in the weld center area was more uniform. |
| 资助项目 | Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228] ; Natural Science Foundation of China[52305435] ; Natural Science Foundation of Anhui Province[1908085QE199] |
| WOS研究方向 | Optics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001297753400001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | Comprehensive Research Facility for Fusion Technology Program of China ; Natural Science Foundation of China ; Natural Science Foundation of Anhui Province |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/135872]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chao, Fang |
| 作者单位 | Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jing, Huang,Chao, Fang,Jin, Liu,et al. Study on molten pool flow and hot cracking of narrow gap laser welding of 316LN stainless steel for fusion reactor[J]. OPTICS AND LASER TECHNOLOGY,2025,181. |
| APA | Jing, Huang,Chao, Fang,Jin, Liu,&Jing, Wei.(2025).Study on molten pool flow and hot cracking of narrow gap laser welding of 316LN stainless steel for fusion reactor.OPTICS AND LASER TECHNOLOGY,181. |
| MLA | Jing, Huang,et al."Study on molten pool flow and hot cracking of narrow gap laser welding of 316LN stainless steel for fusion reactor".OPTICS AND LASER TECHNOLOGY 181(2025). |
入库方式： OAI收割
来源：合肥物质科学研究院
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