Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment
文献类型：期刊论文
| 作者 | Gao, S1; Hou, JS; Guo, YA; Zhou, LZ |
| 刊名 | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| 出版日期 | 2018-09-01 |
| 卷号 | 28期号:9页码:1735-1744 |
| 关键词 | Ni-based superalloy phase precipitation carbide gamma' phase tensile properties |
| ISSN号 | 1003-6326 |
| DOI | 10.1016/S1003-6326(18)64817-4 |
| 英文摘要 | The phase precipitation behavior and tensile properties of an as-cast Ni-based alloy, IN617B alloy, after solution heat treatment and long-term aging treatment were investigated. Ti(C,N), M6C and M23C6 are the primary precipitates in as-cast microstructure. After solution heat treatment, most of carbides dissolve into the matrix except a few fine Ti(C,N) within grains. During long-term aging at 700 degrees C, the phase precipitation behaviors of the alloy are characterized as follows: (1) M23C6 carbides at grain boundaries (GBs) transform from film-like shape to cellular shape and gradually coarsen due to the decrease of the surface energy and element aggregation to GBs; (2) M23C6 carbides within grains have a bar-like morphology with a preferential growth direction [110] and have a cube-on-cube coherent orientation relationship with the matrix gamma; (3) gamma' particles inhibit the coarsening of M23C6 within grains by constraining the diffusion of formation elements. Furthermore, the tensile strength of the alloy obviously increases, but the ductility significantly decreases after the aging for 5000 h. The alloy has a relatively stable microstructure which guarantees the excellent tensile properties during long-term aging. |
| 学科主题 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000446870200006 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79976]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, S,Hou, JS,Guo, YA,et al. Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2018,28(9):1735-1744. |
| APA | Gao, S,Hou, JS,Guo, YA,&Zhou, LZ.(2018).Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,28(9),1735-1744. |
| MLA | Gao, S,et al."Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 28.9(2018):1735-1744. |
入库方式： OAI收割
来源：金属研究所
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