Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing
文献类型：期刊论文
| 作者 | Wu, Bin1,2; Liang, Jing-jing1,3; Yang, Yan-hong1,3; Li, Jin-guo1,3; Zhou, Yi-zhou1 |
| 刊名 | CHINA FOUNDRY
 |
| 出版日期 | 2021-07-01 |
| 卷号 | 18期号:4页码:397-408 |
| ISSN号 | 1672-6421 |
| 关键词 | additive manufacturing laser metal deposition Ni-based superalloy tensile behavior TG146 1(+)5 A |
| DOI | 10.1007/s41230-021-9025-1 |
| 通讯作者 | Liang, Jing-jing(jjliang@imr.ac.cn) |
| 英文摘要 | In this study, a kind of Ni-based superalloy specially designed for additive manufacturing (AM) was investigated. Thermo-Calc simulation and differential scanning calorimetry (DSC) analysis were used to determine phases and their transformation temperature. Experimental specimens were prepared by laser metal deposition (LMD) and traditional casting method. Microstructure, phase constitution and mechanical properties of the alloy were characterized by scanning electron microscopy (SEM), transmission scanning electron microscopy (TEM), X-ray diffraction (XRD) and tensile tests. The results show that this alloy contains two basic phases, gamma/gamma', in addition to these phases, at least two secondary phases may be present, such as MC carbides and Laves phases. Furthermore, the as-deposited alloy has finer dendrite, its mean primary dendrite arm space (PDAS) is about 30-45 mu m, and the average size of gamma' particles is 100-150 nm. However, the dendrite size of the as-cast alloy is much larger and its PDAS is 300-500 mu m with secondary and even third dendrite arms. Correspondingly, the alloy displays different tensile behavior with different processing methods, and the as-deposited specimen shows better ultimate tensile stress (1,085.7 +/- 51.7 MPa), yield stress (697 +/- 19.5 MPa) and elongation (25.8%+/- 2.2%) than that of the as-cast specimen. The differences in mechanical properties of the alloy are due to the different morphology and size of dendrites, gamma', and Laves phase, and the segregation of elements, etc. Such important information would be helpful for alloy application as well as new alloy development. |
| 资助项目 | National Science and Technology Major Project[Y2019-VII-0011-0151] ; National Natural Science Foundation of China[51771190] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | SPRINGER SINGAPORE PTE LTD |
| WOS记录号 | WOS:000696546900014 |
| 资助机构 | National Science and Technology Major Project ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/166943]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liang, Jing-jing |
| 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 3.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Bin,Liang, Jing-jing,Yang, Yan-hong,et al. Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing[J]. CHINA FOUNDRY,2021,18(4):397-408. |
| APA | Wu, Bin,Liang, Jing-jing,Yang, Yan-hong,Li, Jin-guo,&Zhou, Yi-zhou.(2021).Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing.CHINA FOUNDRY,18(4),397-408. |
| MLA | Wu, Bin,et al."Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing".CHINA FOUNDRY 18.4(2021):397-408. |
入库方式： OAI收割
来源：金属研究所
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