Paper Title:
Effect of Thermal Gradient on Solidification Microstructure in the Ni-Base Single Crystal Superalloy CMSX10
  Abstract

A single crystal superalloy including 6 wt.% Re, CMSX10 was studied by directional solidification at various thermal gradients, 13 ~ 23oC/mm and solidification rates, 1~100 μm/s. A high thermal gradient could be obtained by applying the liquid metal, such as Ga-In, as a cooling media in directional solidification apparatus, and also by adjusting the cold chamber in the Bridgman system. As increasing the solidification rate, the planar interface changed to cellular and dendritic interfaces. The higher thermal gradient contributed to reducing the dendrite arm spacing effectively, which results in reducing the size of eutectic, as well as higher solidification rate. The length of the mushy zone decreased with increasing the thermal gradient and increased with increasing the solidification rate.

  Info
Periodical
Defect and Diffusion Forum (Volumes 273-276)
Edited by
Andreas Öchsner and Graeme E. Murch
Pages
361-366
DOI
10.4028/www.scientific.net/DDF.273-276.361
Citation
S.H. Kim, J.M. Kim, H.J. Lee, S.D. Son, J.H. Lee, S. M. Seo, C. Y. Jo, "Effect of Thermal Gradient on Solidification Microstructure in the Ni-Base Single Crystal Superalloy CMSX10", Defect and Diffusion Forum, Vols. 273-276, pp. 361-366, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: J.S. Lee, Je Hyun Lee, Baig Gyu Choi, Chang Yong Jo, Ung Yu Paik, S.G. Gang
Abstract:Co-base superalloys have been applied in the stationary compoents of gas turbine owing to their excellent high temperaure properties. The...
374
Authors: Lorenz Ratke, Sonja Steinbach, Georg Müller, Marc Hainke, András Roósz, Yves Fautrelle, M.D. Dupouy, Gerhard Zimmermann, A. Weiß, Hermann-Josef Diepers, Jacques Lacaze, R. Valdes, G.U. Grün, H.-P. Nicolai, H. Gerke-Cantow
Abstract:The MICAST research program focuses on a systematic analysis of the effect of convection on the microstructure evolution in cast Al-alloys....
131
Authors: Lin Liu, Fa Qin Xie, Jun Zhang, Heng Zhi Fu
Abstract:Directional solidification technique permits materials to grow along specific orientation, in order to obtain mechanical and/or physical...
3106
Authors: Y.H. Kim, H.C. Kim, Yeon Gil Jung, J.H. Lee, B.H. Chi, S.H. Ryu
Abstract:The influence of solidification rates and Cr equivalents on the formation of the ferrite was studied by directional solidification in mod....
1497
  | Authors: De Xin Ma, Bin Zhou, Andreas Bührig-Polaczek
Abstract:In the present work the influence of process parameters on freckle formation in superalloy CMSX-4 is demonstrated. A series of experiments...
428