The effect of secondary dendrite orientation on thickness debit effect of nickel-based single-crystal superalloy with tubular samples

doi:10.1016/j.jmst.2024.06.056

IMR OpenIR

	The effect of secondary dendrite orientation on thickness debit effect of nickel-based single-crystal superalloy with tubular samples
	Liu, Jing 1,2; Yu, Minghan 1,2; Min, Shiling 1,2; Zhang, Gong 1; Xu, Zhengguo 1; Liu, Xingang 1; Wang, Li 1; Dong, Jiasheng 1; Lou, Langhong 1
通讯作者	Wang, Li(wangli@imr.ac.cn) ; Dong, Jiasheng(djs@imr.ac.cn)
	2025-05-10
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	217 页码:80-92
摘要	Secondary dendrite orientation and wall thickness considerably affect the stress rupture life of thin- walled samples. However, the effect of the secondary dendrite orientation on the thickness debit effect of nickel-based single-crystal superalloys has not been thoroughly investigated until now. Owing to geometrical constraints, typical sheet samples cannot reveal the mechanism responsible for the thickness debit effect in turbine blades. This study examined the effect of secondary dendrite orientation on the thickness debit effect of nickel-based single-crystal superalloys at 1100 degrees C/137 MPa in tubular samples. As the wall thickness decreased from 1.5 mm to 0.3 mm, the stress rupture life decreased from approximately 170 h to 64 h, demonstrating a noticeable thickness debit effect. Among the different secondary dendrite orientation areas, the variation in plastic deformation difference increased from 7 % (1.5 mm) to 45 % (0.5 mm) and subsequently decreased to 4 % (0.3 mm). In thinner samples, the thickness contraction and microstructure evolution were more pronounced in the [100] areas than that in the [110] and [210] areas. The theoretical calculation quantitatively indicated that for the effective stress increased, the contribution of plastic deformation (45 %) was slightly lower than that of oxidation (55 %) in 0.3 mm samples; nevertheless, plastic deformation played a prominent role in 0.5, 0.8, 1, and 1.5 mm samples and increased from 61 % (0.5 mm samples) to 85 % (1.5 mm samples). In thinner samples, the larger plastic deformation in the secondary dendrite orientation of the [100] areas and oxidation increased the effective stress, resulting in a shorter rupture life. These findings are conducive to the structural optimization and performance improvement of turbine blades. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Superalloy Creep Secondary dendrite orientation Thickness debit effect Slip
资助者	Science Center for Gas Turbine Project
DOI	10.1016/j.jmst.2024.06.056
收录类别	SCI
语种	英语
资助项目	Science Center for Gas Turbine Project[P2021-AB-IV-0 01-0 02]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001338845500001
出版者	JOURNAL MATER SCI TECHNOL
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190810
专题	中国科学院金属研究所
通讯作者	Wang, Li; Dong, Jiasheng
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, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jing,Yu, Minghan,Min, Shiling,et al. The effect of secondary dendrite orientation on thickness debit effect of nickel-based single-crystal superalloy with tubular samples[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,217:80-92.
APA	Liu, Jing.,Yu, Minghan.,Min, Shiling.,Zhang, Gong.,Xu, Zhengguo.,...&Lou, Langhong.(2025).The effect of secondary dendrite orientation on thickness debit effect of nickel-based single-crystal superalloy with tubular samples.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,217,80-92.
MLA	Liu, Jing,et al."The effect of secondary dendrite orientation on thickness debit effect of nickel-based single-crystal superalloy with tubular samples".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 217(2025):80-92.