Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 &deg;C/ 130 MPa

doi:10.1016/j.msea.2023.145796

IMR OpenIR

	Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa
	Lv, Peisen 1; Liu, Lirong 1; Yang, Yanhong 2; Zhao, Yunsong 3; Zhang, Jian 3
通讯作者	Liu, Lirong(lrliu@sut.edu.cn) ; Yang, Yanhong(yhyang@imr.ac.cn)
	2023-11-17
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	888 页码:13
摘要	In order to satisfy the pursuit of advanced aeroengines with low cost and high temperature capacity, the novel Re-free and Re-low single crystal superalloys were designed based on the strategy of Re-reduction. The creep lives of the two experimental alloys at 1100 degrees C/130 MPa both exceed that of Ren & eacute; N5, and the Re-low alloy displays better creep performance and microstructural stability than the Re-free alloy. At the end of steady creep stage, due to the strong hindrance of interfacial dislocation networks, only a few superdislocations with Burgers vectors a<110> and a<001> enter into gamma ' phase in the Re-low alloy. In the Re-free alloy, non-uniform plastic deformation leads to the severe gamma/gamma ' topological inversion, resulting in high-density a<110> superdislocation arrays in gamma ' rafts, which can further react to form superdislocation networks. Moreover, the increasing mu phase precipitated with the prolonging creep time also promotes earlier failure of the Re-free alloy. In summary, the Re addition can improve creep resistance through reducing rafting rate of gamma ' particles, stabilizing interfacial dislocation networks and increasing the APB energy of ordered gamma ' phase. The above results provide favorable experimental basis for the development of low-cost single crystal superalloys.
关键词	Single crystal superalloy Creep TCP phase Superdislocation network Superdislocation
资助者	Natural Science Foundation of China
DOI	10.1016/j.msea.2023.145796
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of China[52001297]
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:001102993300001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177493
专题	中国科学院金属研究所
通讯作者	Liu, Lirong; Yang, Yanhong
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Liaoning 110016, Peoples R China 3.Beijing Inst Aeronaut Mat, Sci & Technol Adv High Temp Struct Mat Lab, Beijing 100095, Peoples R China
推荐引用方式 GB/T 7714	Lv, Peisen,Liu, Lirong,Yang, Yanhong,et al. Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,888:13.
APA	Lv, Peisen,Liu, Lirong,Yang, Yanhong,Zhao, Yunsong,&Zhang, Jian.(2023).Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,888,13.
MLA	Lv, Peisen,et al."Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 888(2023):13.