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Effects of Ta on the solidification behavior and microstructure of a rhenium-containing hot corrosion resistant single crystal
Ma, Shi-hua; Hao, Hong-quan; Wang, Dong; Lou, Lang-hong; Zhang, Jian
2019-07-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume26Issue:7Pages:901-907
AbstractThe effects of Ta on the solidification microstructure of the Re-containing hot corrosion resistant Ni-base single crystal were investigated. Results showed that Ta addition significantly modified the solidification behavior and further influenced the as-cast microstructure. Ta addition changed the solidification characteristic temperatures and decreased the segregation of refractory elements (Re and W) as well as increased the solidification temperature range from 39.0 to 61.8 degrees C as Ta addition increased from 2wt% to 8wt%. The integration of these two factors increased the primary dendrite arm spacing and changed the morphology and size of gamma ' precipitates. With increasing Ta addition from 2wt% to 8wt%, the size of gamma ' precipitates in the dendrite core increased substantially from 0.24 to 0.40 mu m, whereas the gamma ' precipitates in the interdendritic region decreased slightly from 0.56 to 0.47 mu m. This paper then discussed the mechanism of these Ta effects.
Keywordsuperalloys tantalum solidification behavior microstructure
Indexed BySCI
Language英语
WOS IDWOS:000474396200011
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80941
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Ma, Shi-hua,Hao, Hong-quan,Wang, Dong,et al. Effects of Ta on the solidification behavior and microstructure of a rhenium-containing hot corrosion resistant single crystal[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2019,26(7):901-907.
APA Ma, Shi-hua,Hao, Hong-quan,Wang, Dong,Lou, Lang-hong,&Zhang, Jian.(2019).Effects of Ta on the solidification behavior and microstructure of a rhenium-containing hot corrosion resistant single crystal.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,26(7),901-907.
MLA Ma, Shi-hua,et al."Effects of Ta on the solidification behavior and microstructure of a rhenium-containing hot corrosion resistant single crystal".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 26.7(2019):901-907.
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