Effect of P and B compound strengthening on the evolution of phases and stress rupture properties of the IN718 superalloy during long-term aging at 650 & DEG;C

doi:10.1016/j.msea.2023.145386

IMR OpenIR

	Effect of P and B compound strengthening on the evolution of phases and stress rupture properties of the IN718 superalloy during long-term aging at 650 & DEG;C
	Wang, Zhiyuan 1,2; Zhang, Weiwei 3; Li, Shaowei 1,2; Mei, Feiqiang 4; Xin, Xin 2; Sun, Wenru 2
通讯作者	Xin, Xin(xxin@imr.ac.cn) ; Sun, Wenru(wrsun@imr.ac.cn)
	2023-08-10
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	881 页码:14
摘要	The influences of P and B compound strengthening on the precipitated phases, stress-rupture properties and deformation mechanisms of a direct-aged IN718 superalloy during long-term aging at 650 & DEG;C are investigated. The results indicate that the combined addition of P and B reduces the coarsening rate of & gamma;& DPRIME; phases and markedly inhibits the precipitation and growth of 8 phases and & alpha;-Cr phases. P and B compound strengthening could improve the stress-rupture property of the alloy at 680 & DEG;C/700 MPa by increasing the strength of intragranular and grain boundary. In the grain interior, P and B compound strengthening could inhibit the intragranular diffusion and hinder the coarsening of & gamma;& DPRIME; phases, thus increasing the stability of & gamma;& DPRIME; phases that could reduce the degree of cut by dislocations. In addition, the combined addition of P and B reduces the stacking fault energy of the alloy and forms the high-density twin, improving the ability of the alloy to impede dislocation movement. At the grain boundary, P and B compound strengthening could inhibit the grain boundary diffusion, hindering the nucleation and growth of the 8 phase and the & alpha;-Cr phase, and the crack initiation and propagation. After aging at 650 & DEG;C for 5000 h, the combined addition of P and B could also inhibit the precipitation of TCP-& sigma; phases at grain boundaries, but the TCP phases have no obvious effect on the stress-rupture property of the alloys due to their lower amounts and sizes. With the increase in aging time, the permanent deformation mechanism of the two alloys changes from twinning to dislocation shear & gamma;" phase and twinning.
关键词	IN718 superalloy Phosphorus and boron compound strengthening Long -term aging Microstructure Stress-rupture property
DOI	10.1016/j.msea.2023.145386
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001038034700001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：8[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/321006/178766
专题	中国科学院金属研究所
通讯作者	Xin, Xin; Sun, Wenru
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, Shenyang 110016, Peoples R China 3.Chengdu Adv Met Mat Ind Technol Res Inst Co Ltd, Chengdu 610303, Sichuan, Peoples R China 4.AF Equipment Dept, Shenyang Area 2nd Mil Representat Room, Shenyang 110043, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhiyuan,Zhang, Weiwei,Li, Shaowei,et al. Effect of P and B compound strengthening on the evolution of phases and stress rupture properties of the IN718 superalloy during long-term aging at 650 & DEG;C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,881:14.
APA	Wang, Zhiyuan,Zhang, Weiwei,Li, Shaowei,Mei, Feiqiang,Xin, Xin,&Sun, Wenru.(2023).Effect of P and B compound strengthening on the evolution of phases and stress rupture properties of the IN718 superalloy during long-term aging at 650 & DEG;C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,881,14.
MLA	Wang, Zhiyuan,et al."Effect of P and B compound strengthening on the evolution of phases and stress rupture properties of the IN718 superalloy during long-term aging at 650 & DEG;C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 881(2023):14.