Effect of dendrite arrays near grain boundary on the competitive growth of converging Ni-based bi-crystal superalloys
文献类型：期刊论文
| 作者 | Chen, Chao1,2; Sun, Jingxia1,2; Yang, Yanhong2; Li, Jinguo2; Zhou, Yizhou2 |
| 刊名 | MATERIALS LETTERS
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 344页码:4 |
| 关键词 | Solidification Crystal growth Dendrite spacing Grain boundaries |
| ISSN号 | 0167-577X |
| DOI | 10.1016/j.matlet.2023.134477 |
| 通讯作者 | Yang, Yanhong(yhyang@imr.ac.cn) ; Zhou, Yizhou(yzzhou@imr.ac.cn) |
| 英文摘要 | The relationship between the arrangement of dendrite array near grain boundary (GB) and the competitive converging dendrites growth in Ni-based superalloys was characterized by the minimum spanning tree method. The results show that the primary dendrite arm spacing near and far away from GB region is different. The dendrite spacing near GB affects the interlacing of convergent dendrites, thus affecting the competitive growth. At the early solidification stage when the spacing is small, the increasing spacing near GB allows the interlacing of convergent dendrites, which leads to the continuous overgrowth of unfavorably oriented (UO) dendrites to favorably oriented (FO) dendrites. However, at the later stage of solidification when the dendrite spacing become larger, the concomitant growth of developed side-branches will hinder the interlacing of convergent dendrites. Consequently, FO-dendrites with superior growth blocks UO-dendrites with directional growth, and even overgrows UO-dendrites. |
| 资助项目 | National Key R & D Program of China[2021YFB3700400] ; National Major Science and Technology Project[Y2019 -VII -0011-0151] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001006413000001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R & D Program of China ; National Major Science and Technology Project |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178282]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Yanhong; Zhou, Yizhou |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.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 | Chen, Chao,Sun, Jingxia,Yang, Yanhong,et al. Effect of dendrite arrays near grain boundary on the competitive growth of converging Ni-based bi-crystal superalloys[J]. MATERIALS LETTERS,2023,344:4. |
| APA | Chen, Chao,Sun, Jingxia,Yang, Yanhong,Li, Jinguo,&Zhou, Yizhou.(2023).Effect of dendrite arrays near grain boundary on the competitive growth of converging Ni-based bi-crystal superalloys.MATERIALS LETTERS,344,4. |
| MLA | Chen, Chao,et al."Effect of dendrite arrays near grain boundary on the competitive growth of converging Ni-based bi-crystal superalloys".MATERIALS LETTERS 344(2023):4. |
入库方式： OAI收割
来源：金属研究所
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