Effects of B and P on Microstructure and Mechanical Properties of a Superalloy Used for 700 degrees C Advanced Ultra-Supercritical Steam Turbine

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	Effects of B and P on Microstructure and Mechanical Properties of a Superalloy Used for 700 degrees C Advanced Ultra-Supercritical Steam Turbine
	Xiao Xuan 1; Yang Cheng 1,2; Qin Xuezhi 2; Zhou Yanwen 3; Guo Jianting 2; Zhou Lanzhang 2
刊名	RARE METAL MATERIALS AND ENGINEERING
	2017-04-01
卷号	46 期号:4 页码:1136-1142
关键词	700 degrees C advanced ultra-supercritical Ni-Fe base superalloy B (boron) P (phosphorus) microstructure mechanical property
ISSN号	1002-185X
通讯作者	Zhou Lanzhang(lzz@imr.ac.cn)
英文摘要	A new Ni-Fe based wrought superalloy used for 700 degrees C advanced ultra-supercritical steam turbine rotor was developed. The effects of B and P on the microstructure and mechanical properties of the alloy were investigated. The results show that the major precipitates in the alloy are gamma', MC, M23C6 and M3B2. B restrains the precipitation and growth of the M23C6, increases the binding force of grain boundaries and blocks intergranular crack initiation. P accelerates the precipitation and growth of the M23C6, but suppresses crack initiation and propagation in the surface. hi addition, P atom group hinders grain boundary sliding and dislocation glide. B and P play an even more significant role in strengthening grain boundaries at 700 degrees C than at room temperature. They improve the strength as well as the high-temperature ductility. However, high B content reduces the tensile strength and rupture life of the alloy, impairing the beneficial effect of P.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000400722000046
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/124273]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhou Lanzhang
作者单位	1.Shenyang Ligong Univ, Shenyang 110159, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China
推荐引用方式 GB/T 7714	Xiao Xuan,Yang Cheng,Qin Xuezhi,et al. Effects of B and P on Microstructure and Mechanical Properties of a Superalloy Used for 700 degrees C Advanced Ultra-Supercritical Steam Turbine[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46(4):1136-1142.
APA	Xiao Xuan,Yang Cheng,Qin Xuezhi,Zhou Yanwen,Guo Jianting,&Zhou Lanzhang.(2017).Effects of B and P on Microstructure and Mechanical Properties of a Superalloy Used for 700 degrees C Advanced Ultra-Supercritical Steam Turbine.RARE METAL MATERIALS AND ENGINEERING,46(4),1136-1142.
MLA	Xiao Xuan,et al."Effects of B and P on Microstructure and Mechanical Properties of a Superalloy Used for 700 degrees C Advanced Ultra-Supercritical Steam Turbine".RARE METAL MATERIALS AND ENGINEERING 46.4(2017):1136-1142.