Microstructure and Mechanical Properties of Superalloy Laser Welded Joints for GH3625 Fabricated by Laser Additive
文献类型：期刊论文
| 作者 | Geng Zhijie1; Wang Shanlin1; Chen Yuhua1; Huang Yongde1; Xin Jijun2; Ke Liming1; Wen Taotao1; Sun Wenjun1 |
| 刊名 | RARE METAL MATERIALS AND ENGINEERING
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 49 |
| ISSN号 | 1002-185X |
| 关键词 | GH3625 superalloy fabricated by laser additive laser welding microstructure evolution mechanical properties |
| 通讯作者 | Wang Shanlin(slwang70518@nchu.edu.cn) |
| 英文摘要 | The laser butt welding of GH3625 superalloy fabricated by laser additive was conducted. The microstructure evolution and mechanical properties of the welded joints were analyzed. The results show that a great amount of Laves phase is only precipitated at the grain boundary of upper layer in HAZ, resulting in significant coarsening of the grain boundary. Along the upper layer to the lower layer of the weld, the fusion zone and the intermediate zone are gradually transformed from cell crystal, the columnar crystal and the equiaxed fine crystal of the upper layer to columnar crystal of the lower layer. The number of equiaxed fine crystal growing close to the fusion line is gradually increased. And the central zone is dendritic. The particle of fine gamma' phase is precipitated in the weld. A number of Laves phase is precipitated in the inter-dendritic of the intermediate zone, and the morphology gradually changes from the strip of the upper layer to the particle of the lower layer. The tensile strength of the welded joint is 872 MPa, which is up to 98.2% of the base metal. The elongation is up to 90.7% of the base metal, the fracture surface of weld joint is approximately 45 degrees inclined plane, and the fracture mode is the mixed fracture mode of brittle and ductile. |
| WOS关键词 | LAVES PHASE ; HEAT INPUT ; BEHAVIOR |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
| WOS记录号 | WOS:000559890100042 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/70723]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wang Shanlin |
| 作者单位 | 1.Nanchang Hangkong Univ, Natl Def Key Disciplines Lab Light Alloy Proc Sci, Nanchang 330063, Jiangxi, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Geng Zhijie,Wang Shanlin,Chen Yuhua,et al. Microstructure and Mechanical Properties of Superalloy Laser Welded Joints for GH3625 Fabricated by Laser Additive[J]. RARE METAL MATERIALS AND ENGINEERING,2020,49. |
| APA | Geng Zhijie.,Wang Shanlin.,Chen Yuhua.,Huang Yongde.,Xin Jijun.,...&Sun Wenjun.(2020).Microstructure and Mechanical Properties of Superalloy Laser Welded Joints for GH3625 Fabricated by Laser Additive.RARE METAL MATERIALS AND ENGINEERING,49. |
| MLA | Geng Zhijie,et al."Microstructure and Mechanical Properties of Superalloy Laser Welded Joints for GH3625 Fabricated by Laser Additive".RARE METAL MATERIALS AND ENGINEERING 49(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。