Pursued strength-ductility synergy in Ni superalloys produced by laser powder bed fusion: Crystallographic lamellar versus Directionally solidified microstructure
文献类型：期刊论文
| 作者 | Wang, Peng1,2; Liang, Jingjing1; Zhu, Yuping1; Yang, Junying1,2; Zhou, Yizhou1; Sun, Xiaofeng1; Li, Jinguo1 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 925页码:17 |
| 关键词 | Laser powder bed fusion Crystallographic Lamellar microstructure Ni superalloys Mechanical property Deformation mechanism |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2025.147838 |
| 通讯作者 | Liang, Jingjing(jjliang@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn) |
| 英文摘要 | As a unique directional solidification microstructure of Ni superalloys produced by laser powder bed fusion (LPBF), the crystallographic lamellar microstructure (CLM) exhibits a strong texture with <001> and <110> orientation, thereby has potential application in aero-engine turbine blades. Nevertheless, in-depth mechanical properties studies remain lacking. In this study, comparative studies are conducted to reveal the unique deformation and strengthening mechanism of the CLM and DSM (directionally solidified microstructure) under room and high-temperature tensile conditions. However, substantial differences are observed in grain size, the number of grain boundaries, geometrical necessary dislocation (GND), elemental segregation, and crystallographic texture. The tensile results showed that the specimen with CLM exhibited an outstanding strength-ductility synergy due to the presence of high-proportioned <110> texture and unique <001> and <110> boundary. The regularly distributed <001> grains can serve as strong obstacles for slip bands and cracks propagating in <110> grains. Moreover, the <110> texture together with <001> and <110> boundary can elevate the local flow stresses and result in the activation of profuse deformation mechanisms, such as Planar slip bands, Stacking faults (SFs), and deformation twins. This work provides cross-scale insights into the deformation mechanisms and underscores the potential of CLM for developing high-temperature structural applications in Ni superalloy. |
| 资助项目 | Tech-nology Field fund[2021-JCJQ-JJ-0092] ; Science Center for Gas Turbine Project[P2022-C-IV-002-001] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001408751300001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Tech-nology Field fund ; Science Center for Gas Turbine Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liang, Jingjing; Li, Jinguo |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Peng,Liang, Jingjing,Zhu, Yuping,et al. Pursued strength-ductility synergy in Ni superalloys produced by laser powder bed fusion: Crystallographic lamellar versus Directionally solidified microstructure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2025,925:17. |
| APA | Wang, Peng.,Liang, Jingjing.,Zhu, Yuping.,Yang, Junying.,Zhou, Yizhou.,...&Li, Jinguo.(2025).Pursued strength-ductility synergy in Ni superalloys produced by laser powder bed fusion: Crystallographic lamellar versus Directionally solidified microstructure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,925,17. |
| MLA | Wang, Peng,et al."Pursued strength-ductility synergy in Ni superalloys produced by laser powder bed fusion: Crystallographic lamellar versus Directionally solidified microstructure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 925(2025):17. |
入库方式： OAI收割
来源：金属研究所
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