Influence of Temperatures on Creep Behavior of Pt-Al Coated Third-Generation Low-Cost Single Crystal Superalloy

doi:10.12442/j.issn.1002-185X.20240015

IMR OpenIR

	Influence of Temperatures on Creep Behavior of Pt-Al Coated Third-Generation Low-Cost Single Crystal Superalloy
	Zhang, Ge 1; Tao, Xipeng 2; Jafri, Syed Muhammad Abbas 2; Wang, Xinguang 2; Zhang, Song 1; Zhang, Chunhua 1; Liang, Jingjing 2; Li, Jinguo 2; Sun, Xiaofeng 2; Zhou, Yizhou 2
通讯作者	Tao, Xipeng(xptao19b@imr.ac.cn)
	2024-10-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	53 期号:10 页码:2766-2776
摘要	The influence of applied temperatures on the creep rupture life of the third-generation low-cost single crystal (SX) superalloy with Pt-Al coating was evaluated. The creep damage was observed under the conditions of 1100 degrees C/137 MPa, 1120 degrees C/137 MPa, and 1140 degrees C/137 MPa. Results show that the properties of bare superalloy outperform those of coated superalloy under all test conditions. The most significant reduction in creep life reaches 50% when the test condition is 1100 degrees C/137 MPa. At higher temperatures (1120 and 1140 degrees C), the crack propagation rate in Pt-Al coatings to SX superalloy substrate decreases, thereby reducing the degradation degree of mechanical properties. Instead of the penetration into SX substrate, tip oxidation and Al diffusion of the coating cracks cause the formation of oxides, therefore leading to the slow degradation in microstructures of the substrate beneath the coating. At 1100 degrees C, however, the microstructure of coating/SX superalloy substrate degrades due to the Al internal diffusion. This diffusion mechanism promotes the formation of harmful topologically close packed phases around 1100 degrees C. At 1120 and 1140 degrees C, the dislocation of SX superalloy substrate beneath the coating is relatively unchanged, compared to that in the inner superalloy. In contrast, the dislocation network of the substrate beneath the coating becomes sparse, and the number of superdislocations cutting into gamma ' phases increases at 1100 degrees C.
关键词	Pt-Al coating high-temperature creep single crystal superalloy crack oxidation microstructure evolution
资助者	National Key Research and Development Program of China ; China Postdoctoral Science Foundation
DOI	10.12442/j.issn.1002-185X.20240015
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700704] ; China Postdoctoral Science Foundation[2023M733570]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001352069400007
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191344
专题	中国科学院金属研究所
通讯作者	Tao, Xipeng
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ge,Tao, Xipeng,Jafri, Syed Muhammad Abbas,et al. Influence of Temperatures on Creep Behavior of Pt-Al Coated Third-Generation Low-Cost Single Crystal Superalloy[J]. RARE METAL MATERIALS AND ENGINEERING,2024,53(10):2766-2776.
APA	Zhang, Ge.,Tao, Xipeng.,Jafri, Syed Muhammad Abbas.,Wang, Xinguang.,Zhang, Song.,...&Zhou, Yizhou.(2024).Influence of Temperatures on Creep Behavior of Pt-Al Coated Third-Generation Low-Cost Single Crystal Superalloy.RARE METAL MATERIALS AND ENGINEERING,53(10),2766-2776.
MLA	Zhang, Ge,et al."Influence of Temperatures on Creep Behavior of Pt-Al Coated Third-Generation Low-Cost Single Crystal Superalloy".RARE METAL MATERIALS AND ENGINEERING 53.10(2024):2766-2776.