Comparison of Microstructures and Calculated Solidification Parameters Between FGH95 and Rene' 95 Superalloy Powders

Li Huiying; Hu Benfu; Zhang Shouhua

doi:10.13374/j.issn1001-053x.1987.s1.002

Volume 9 Issue S1

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Li Huiying, Hu Benfu, Zhang Shouhua. Comparison of Microstructures and Calculated Solidification Parameters Between FGH95 and Rene' 95 Superalloy Powders[J]. Chinese Journal of Engineering, 1987, 9(S1): 1-11. doi: 10.13374/j.issn1001-053x.1987.s1.002

Citation:

Li Huiying, Hu Benfu, Zhang Shouhua. Comparison of Microstructures and Calculated Solidification Parameters Between FGH95 and Rene' 95 Superalloy Powders[J]. Chinese Journal of Engineering, 1987, 9(S1): 1-11. doi: 10.13374/j.issn1001-053x.1987.s1.002

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Comparison of Microstructures and Calculated Solidification Parameters Between FGH95 and Rene' 95 Superalloy Powders

doi: 10.13374/j.issn1001-053x.1987.s1.002

Available Online: 2021-10-28
Publish Date: 2021-10-28

Abstract

Abstract

Dendritic arms spacings of FGH95 and Rene'95 atomized powder for different mesh size were measured. Cooling rate (Ṫ) > local solidification time(t_f), thermal gradient (G), and growth rate (R) were calculated.It is shown that as local solidification time is 10^-1-10^-2s,cooling rate of two powders inside the range of -60-+320 mesh is 103-104℃/s.The cooling rate and O/R ratio inerease with decreasing particle size and dendrite structure of powder particle correspondly changes into cellular structure.It seems that the morphology of MC carbibe in powder particle does not depend only on O/R ratio.