INFLUENCE OF Re ON MICROSTRUCTURES OF A DIRECTIONALLY SOLIDIFIED Ni-BASED SUPERALLOY

doi:10.11900/0412.1961.2015.00600

IMR OpenIR

	INFLUENCE OF Re ON MICROSTRUCTURES OF A DIRECTIONALLY SOLIDIFIED Ni-BASED SUPERALLOY
	Zhang Siqian 1; Wang Dong 2; Wang Di 2; Peng Jianqiang 3
通讯作者	Wang Dong(dwang@imr.ac.cn)
	2016-07-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	52 期号:7 页码:851-858
摘要	Up to now, considerable effort has been expended in attempts to investigate the influences of Re on Ni-based single crystal superalloys. However, few study had elucidated the influences of Re on carbide, boride and grain boundary. Therefore, the influence of a 2% Re (mass fraction) addition on the as-cast and heat-treated microstructures of a Ni-based directionally solidified superalloy was investigated by comparison with Re-free alloy using SEM, EPMA and TEM. The results show that Re accelerates the precipitation of mu phase in the periphery of eutectic and at grain boundary for as-cast microstructure. After heat treatment, Re also accelerates the precipitation of phase in the vicinity of primary MC carbide and at grain boundary. For 0Re alloy, there are small number of M6C carbide in the vicinity of primary MC carbide and M-23(C, B)(6) boro-carbide at grain boundary. For 2Re alloy, a large amount of blocky mu phase enveloped by thick gamma'-film is found in the vicinity of primary MC carbide and at grain boundary. Enrichment of B along the grain boundary is observed in 0Re alloy. On the contrary, relatively uniform distribution of B is found in 2Re alloy. The precipitation mechanism of mu phase during the process of heat treatment is also analyzed.
关键词	Ni-based superalloy directional solidification Re mu phase grain boundary carbide
DOI	10.11900/0412.1961.2015.00600
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000385747800010
出版者	SCIENCE PRESS
引用统计	被引频次：2[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/321006/122989
专题	中国科学院金属研究所
通讯作者	Wang Dong
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Harbin Turbine Co Ltd, Harbin 150046, Peoples R China
推荐引用方式 GB/T 7714	Zhang Siqian,Wang Dong,Wang Di,et al. INFLUENCE OF Re ON MICROSTRUCTURES OF A DIRECTIONALLY SOLIDIFIED Ni-BASED SUPERALLOY[J]. ACTA METALLURGICA SINICA,2016,52(7):851-858.
APA	Zhang Siqian,Wang Dong,Wang Di,&Peng Jianqiang.(2016).INFLUENCE OF Re ON MICROSTRUCTURES OF A DIRECTIONALLY SOLIDIFIED Ni-BASED SUPERALLOY.ACTA METALLURGICA SINICA,52(7),851-858.
MLA	Zhang Siqian,et al."INFLUENCE OF Re ON MICROSTRUCTURES OF A DIRECTIONALLY SOLIDIFIED Ni-BASED SUPERALLOY".ACTA METALLURGICA SINICA 52.7(2016):851-858.