Solidification behavior of a cast nickel-base superalloy
Sun, XF; Yin, FS; Li, JG; Hou, GC; Zheng, Q; Guan, HR; Hu, ZQ
Corresponding AuthorSun, XF()
AbstractThe solidification behavior and as-cast microstructure feature of a cast nickel-base superalloy M963 have been investigated by SEM (EDXS) and DTA. The results show that the solidification sequence of M963 superalloy is as follows: L-->L+gamma --> L+(gamma'+MC)+ gamma --> (gamma+gamma') + (gamma+MC)gamma --> (gamma + gamma') + (gamma + MC)+gamma + gamma'. The as-cast microstructure is dendritic and consists of gamma solid solution matrix, gamma' precipitate, the script-like MC carbide and (gamma + gamma') eutectic in the interdendritic region. Carbon causes a decrease in liquidus and (gamma + gamma') eutectic temperature, and an increase in MC carbide formation temperature, thus decreases the volume fraction of (gamma + gamma') eutectic and increases the volume fraction of MC carbide. The refractory element W and Co are rich in dendrite arm but Al, Ti, Nb, Cr and Mo rich in interdendritic region.
Keywordcast nickel-base superalloy solidification microstructure DTA
Indexed BySCI
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000180699100007
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorSun, XF
Affiliation1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
2.Shandong Univ Technol, Coll Mech Engn, Zibo 255012, Peoples R China
Recommended Citation
GB/T 7714
Sun, XF,Yin, FS,Li, JG,et al. Solidification behavior of a cast nickel-base superalloy[J]. ACTA METALLURGICA SINICA,2003,39(1):27-29.
APA Sun, XF.,Yin, FS.,Li, JG.,Hou, GC.,Zheng, Q.,...&Hu, ZQ.(2003).Solidification behavior of a cast nickel-base superalloy.ACTA METALLURGICA SINICA,39(1),27-29.
MLA Sun, XF,et al."Solidification behavior of a cast nickel-base superalloy".ACTA METALLURGICA SINICA 39.1(2003):27-29.
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