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Microstructure and mechanical properties of zirconium doped NiAl/Cr(Mo) hypoeutectic alloy prepared by injection casting
Sheng,L Y1; Du,B N1; Guo,J T2
2017
Source PublicationIOP Conference Series: Materials Science and Engineering
ISSN1757-8981
Volume167Issue:1
AbstractAbstract 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.
DOI10.1088/1757-899X/167/1/012052
Language英语
WOS IDIOP:1757-8981-167-1-012052
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80495
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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).
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