Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing
文献类型：期刊论文
| 作者 | Wu, Bin1,3; Liang, Jing-jing2,3; Zhou, Yi-zhou3; Yang, Yan-hong2,3; LI, Jin-guo2,3; Sun, Xiao-feng3 |
| 刊名 | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 33期号:4页码:1124-1143 |
| 关键词 | Marangoni convection molten pool laser power (LP) primary dendrite arm space (PDAS) segregation |
| ISSN号 | 1003-6326 |
| DOI | 10.1016/S1003-6326(23)66170-9 |
| 通讯作者 | Liang, Jing-jing(jjliang@imr.ac.cn) ; Zhou, Yi-zhou(yzzhou@imr.ac.cn) |
| 英文摘要 | The microstructure and tensile properties of a new Ni-based superalloy specially designed for additive manufacture (AM) were investigated under different laser power (LP) conditions. The results measured by X-ray diffraction analysis and scanning electron microscopy show that no cracks are observed in as-deposited alloy, which has typical crystallography orientation and non-equilibrium solidification dendrite/cellular morphology. The elements such as Nb, Si and Ti are enriched in the interdendritic regions, while Al, Cr and Co segregate in the dendritic cores. When the LP is low, the cellular crystals of the alloy are arranged orderly, the primary dendrite arm space (PDAS) is small, the porosity is large, the strength is high and the elongation is low. With the increase of LP, the PDAS increases, the porosity decreases, the strength decreases and the elongation increases. When the LP is elevated further, Marangoni convection effect is enhanced and shows unique impacts, that is, the disordered arrangement of cellular crystals occurs. Then, the PDAS decreases, the porosity increases, the strength increases and the elongation decreases. The smaller PDAS favors the reduction for elements segregation, as well as microstructure refinement and strength improvement. The fitting formula between PDAS and yield strength (YS) was proposed, and the concentric ring patterns inside microstructure were rationalized. |
| 资助项目 | National Science and Technology Major Project, China[Y2019 -VII -0011-0151] ; National Natural Science Foundation of China[51771190] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001004292300001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Science and Technology Major Project, China ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178285]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liang, Jing-jing; Zhou, Yi-zhou |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Key Lab Space Mfg Technol, Beijing 100094, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Bin,Liang, Jing-jing,Zhou, Yi-zhou,et al. Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2023,33(4):1124-1143. |
| APA | Wu, Bin,Liang, Jing-jing,Zhou, Yi-zhou,Yang, Yan-hong,LI, Jin-guo,&Sun, Xiao-feng.(2023).Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,33(4),1124-1143. |
| MLA | Wu, Bin,et al."Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 33.4(2023):1124-1143. |
入库方式： OAI收割
来源：金属研究所
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