Effect of dendrite arrays near grain boundary on the competitive growth of converging Ni-based bi-crystal superalloys

doi:10.1016/j.matlet.2023.134477

IMR OpenIR

	Effect of dendrite arrays near grain boundary on the competitive growth of converging Ni-based bi-crystal superalloys
	Chen, Chao 1,2; Sun, Jingxia 1,2; Yang, Yanhong 1; Li, Jinguo 1; Zhou, Yizhou 1
通讯作者	Yang, Yanhong(yhyang@imr.ac.cn) ; Zhou, Yizhou(yzzhou@imr.ac.cn)
	2023-08-01
发表期刊	MATERIALS LETTERS
ISSN	0167-577X
卷号	344 页码:4
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.
关键词	Solidification Crystal growth Dendrite spacing Grain boundaries
资助者	National Key R & D Program of China ; National Major Science and Technology Project
DOI	10.1016/j.matlet.2023.134477
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001006413000001
出版者	ELSEVIER
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178283
专题	中国科学院金属研究所
通讯作者	Yang, Yanhong; Zhou, Yizhou
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	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.