Effect of phosphorus on cast microstructure of Ni3Al
Meng, XN; Sun, WR; Guo, SR; Lu, DZ; Li, N
Corresponding AuthorSun, WR()
AbstractPhosphorus is hardly dissolved in the solidified Ni3Al solids, and tends to be segregated in the residual liquids of Ni3Al The phosphorus-bearing phase is precipitated at the end of solidification. The segregation of phosphorus in the residual liquids inhibits the nucleation of Ni3Al grains and the formation of the equiaxed grains at the central part of the sample, and favors the growth of the columnar grains towards the central part of the sample. The reason for phosphorus to decrease the nucleation rate of Ni3Al is that if lowers the difference of free energy between solids and liquids, and increases the activation energy for the atoms to transit through the liquid/solid interface. Phosphorus lowers the final solidification temperature of Ni3Al, increases the length of mushy zone, inhibits the feeding of casting, and hence increases the tendency of micropores formation.
Keywordphosphorus Ni3Al solidification segregation
Indexed BySCI
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000222338500011
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorSun, WR
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 10016, Peoples R China
Recommended Citation
GB/T 7714
Meng, XN,Sun, WR,Guo, SR,et al. Effect of phosphorus on cast microstructure of Ni3Al[J]. ACTA METALLURGICA SINICA,2004,40(6):613-615.
APA Meng, XN,Sun, WR,Guo, SR,Lu, DZ,&Li, N.(2004).Effect of phosphorus on cast microstructure of Ni3Al.ACTA METALLURGICA SINICA,40(6),613-615.
MLA Meng, XN,et al."Effect of phosphorus on cast microstructure of Ni3Al".ACTA METALLURGICA SINICA 40.6(2004):613-615.
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