Hot Isostatic Densification of Inconel 718 Powder Alloy and Elimination of Prior Particle Boundaries
文献类型：期刊论文
| 作者 | Tian, Xiaosheng1,2; Lu, Zhengguan1; Xu, Lei1; Wu, Jie1; Yang, Rui1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 60期号:11页码:144 |
| 关键词 | Inconel 718 alloy hot isostatic pressing heat treatment prior particle boundary me- chanical property |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2022.00481 |
| 通讯作者 | Wu, Jie(jwu10s@imr.ac.cn) |
| 英文摘要 | Inconel 718 alloy is widely used in aeronautical fields owing to its excellent mechanical properties and high-temperature resistance. Hot isostatic pressing (HIPing) is a powder metallurgy (PM) processing technology that produces near or net-shape components and solves the problems of macro- segregation and microstructure inhomogeneity. However, the application of PM Inconel 718 alloys has been limited by prior particle boundaries (PPBs), which can negatively impact mechanical properties, such as elongation at elevated temperatures and impact properties. To address this issue, the formation of PPBs can be suppressed during HIPing, or they can be eliminated through subsequent processing. Pre-alloyed powder of Inconel 718 was prepared using the electrode induction melting gas atomization (EIGA) method, and PM Inconel 718 alloys were prepared through the HIPing route. The resulting compacts were subjected to special high-temperature heat treatment, and their mechanical properties were tested. The mechanical properties of PM Inconel 718 test bars were found to be comparable to those of the wrought version of the alloy. However, large and complex components of PM Inconel 718 can contain undesirable PPBs due to mold shielding and insufficient degassing, resulting in poor ductility and impact properties after standard heat treatment. Special high-temperature heat treatment can effectively eliminate the PPBs in the compacts, leading to a substantial improvement in tensile ductility and impact properties. This improvement makes it possible to prepare large and complex components through HIPing with improved mechanical properties. |
| 资助项目 | National Science and Technology Major Project of China[J2019-VII-0005-0145] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22010102] ; CAS Project for Young Scientists in Basic Research[YSBR-025] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001376975000004 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Project for Young Scientists in Basic Research |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, Jie |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 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 | Tian, Xiaosheng,Lu, Zhengguan,Xu, Lei,et al. Hot Isostatic Densification of Inconel 718 Powder Alloy and Elimination of Prior Particle Boundaries[J]. ACTA METALLURGICA SINICA,2024,60(11):144. |
| APA | Tian, Xiaosheng,Lu, Zhengguan,Xu, Lei,Wu, Jie,&Yang, Rui.(2024).Hot Isostatic Densification of Inconel 718 Powder Alloy and Elimination of Prior Particle Boundaries.ACTA METALLURGICA SINICA,60(11),144. |
| MLA | Tian, Xiaosheng,et al."Hot Isostatic Densification of Inconel 718 Powder Alloy and Elimination of Prior Particle Boundaries".ACTA METALLURGICA SINICA 60.11(2024):144. |
入库方式： OAI收割
来源：金属研究所
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