Evolution and Structure Characterization of the Carbide and Boride during Creep in A Ni-based Superalloy

IMR OpenIR

	Evolution and Structure Characterization of the Carbide and Boride during Creep in A Ni-based Superalloy
	Du Beining 1,2,3; Sheng Liyuan 2,3; Lai Chen 2,3; Cui Chuanyong 4; Yang Jinxia 4; Sun Xiaofeng 4
通讯作者	Sheng Liyuan(lysheng@yeah.net)
	2017-08-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	46 期号:8 页码:2123-2129
摘要	The creep property of a Ni-based K417G superalloy was tested at 760 degrees C/645 MPa, 900 degrees C/315 MPa and 950 degrees C/235 MPa, and then the microstructure after creep was characterized through scanning electron microscope (SEM) and transmission electron microscope (TEM). The creep mechanism under different conditions was analyzed. Moreover, by comparing the morphology, distribution and crystal structure of carbides and borides before and after creep tests, the influences of creep condition on the precipitation and evolution of carbides and borides were investigated, and the effects of carbides and borides on the creep properties of Ni-based superalloy were revealed. Results show that as the creep condition varies from 760 degrees C/645 MPa to 900 degrees C/315 MPa and 950 degrees C/235 MPa, the creep life of K417G superalloy increases firstly and then decreases. At 760 degrees C/645 MPa, the creep crack initiates at the broken MC carbide; At 900 degrees C/315 MPa, the creep crack initiates at both the broken MC carbide and grain boundary; At 950 degrees C/235 MPa, the creep crack initiates at grain boundary. In addition, at 760 degrees C/645 MPa, the MC carbide does not decompose, and there is no carbide or boride precipitate at the grain boundary; At 900 degrees C/315 MPa, the MC carbide decomposes and M23C6 carbide forms. M23C6 carbide and M3B2 boride precipitate uniformly at the grain boundary; At 950 degrees C/235 MPa, the M23C6 carbide and M3B2 boride at the grain boundary grow up and distribute as strip.
关键词	Ni-based superalloy creep carbide boride
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000409396900016
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：5[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/321006/124911
专题	中国科学院金属研究所
通讯作者	Sheng Liyuan
作者单位	1.Peking Univ, Beijing 100871, Peoples R China 2.PKU HKUST Shenzhen Hong Kong Inst, Shenzhen 518057, Peoples R China 3.Peking Univ, Shenzhen Inst, Shenzhen 518057, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Du Beining,Sheng Liyuan,Lai Chen,et al. Evolution and Structure Characterization of the Carbide and Boride during Creep in A Ni-based Superalloy[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46(8):2123-2129.
APA	Du Beining,Sheng Liyuan,Lai Chen,Cui Chuanyong,Yang Jinxia,&Sun Xiaofeng.(2017).Evolution and Structure Characterization of the Carbide and Boride during Creep in A Ni-based Superalloy.RARE METAL MATERIALS AND ENGINEERING,46(8),2123-2129.
MLA	Du Beining,et al."Evolution and Structure Characterization of the Carbide and Boride during Creep in A Ni-based Superalloy".RARE METAL MATERIALS AND ENGINEERING 46.8(2017):2123-2129.