Microstructure and mechanical properties of zirconium doped NiAl/Cr(Mo) hypoeutectic alloy prepared by injection casting

doi:10.1088/1757-899X/167/1/012052

IMR OpenIR

	Microstructure and mechanical properties of zirconium doped NiAl/Cr(Mo) hypoeutectic alloy prepared by injection casting
	Sheng,L Y 1; Du,B N 1; Guo,J T 2
	2017
发表期刊	IOP Conference Series: Materials Science and Engineering
ISSN	1757-8981
卷号	167 期号:1
摘要	Abstract NiAl based materials has been considered as most potential candidate of turbine blade, due to its excellent high-temperature properties. However the bad room-temperature properties handicap its application. In the present paper, the zirconium doped NiAl/Cr(Mo) hypoeutectic alloy is fabricated by conventional casting and injection casting technology to improve its room-temperature properties. The microstructure and compressive properties at different temperatures of the conventionally-cast and injection-cast were investigated. The results exhibit that the conventionally-cast alloy comprises coarse primary NiAl phase and eutectic cell, which is dotted with irregular Ni2AlZr Heusler phase. Compared with the conventionally-cast alloy, the injection-cast alloy possesses refined the primary NiAl, eutectic cell and eutectic lamella. In addition, the Ni2AlZr Heusler phase become smaller and distribute uniformly. Moreover, the injection casting decrease the area fraction of primary NiAl phase at the cell interior or cell boundaries. The compressive ductility and yield strength of the injection-cast alloy at room temperature increase by about 100% and 35% over those of conventionally-cast alloy, which should be ascribed to the microstructure optimization.
DOI	10.1088/1757-899X/167/1/012052
语种	英语
WOS记录号	IOP:1757-8981-167-1-012052
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80495
专题	中国科学院金属研究所
作者单位	1.Shenzhen Institute, Peking University, southern 7 street, Hi-Tech Park, Shenzhen, China 2.Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, Shenyang, China
推荐引用方式 GB/T 7714	Sheng,L Y,Du,B N,Guo,J T. Microstructure and mechanical properties of zirconium doped NiAl/Cr(Mo) hypoeutectic alloy prepared by injection casting[J]. IOP Conference Series: Materials Science and Engineering,2017,167(1).
APA	Sheng,L Y,Du,B N,&Guo,J T.(2017).Microstructure and mechanical properties of zirconium doped NiAl/Cr(Mo) hypoeutectic alloy prepared by injection casting.IOP Conference Series: Materials Science and Engineering,167(1).
MLA	Sheng,L Y,et al."Microstructure and mechanical properties of zirconium doped NiAl/Cr(Mo) hypoeutectic alloy prepared by injection casting".IOP Conference Series: Materials Science and Engineering 167.1(2017).