Solidification Behavior and Segregation of Re-containing Cast Ni-base Superalloy with Different Cr Content

Abstract

Abstract: The effect of chromium (Cr) on solidification and segregation behavior of Re-containing cast Ni-base superalloys was investigated by optical microscopy (OM), scanning electron microscopy (SEM) and electronic probe micro analysis (EPMA). The results show that Cr has significant effect on solidification and segregation behavior of Re-containing cast Ni-base superalloys. The liquidus and solidus of alloy decrease with increasing Cr in alloys. The segregation coe±cient (K) of Mo increases and that of W and Re decreases gradually with increasing Cr element.

Key words: Superalloy, Chromium, Solidi¯cation, Segregation

Xiurong Guan, Enze Liu, Zhi Zheng, Yongsi Yu, Jian Tong, Yuchun Zhai. Solidification Behavior and Segregation of Re-containing Cast Ni-base Superalloy with Different Cr Content[J]. J Mater Sci Technol, 2011, 27(2): 113-117.

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