Plastic Deformation and Recrystallization of a Ni-Based Single Crystal Superalloy

Abstract:

Plastic deformation and recrystallization of a Ni-based single crystal superalloy were experimentally investigated. Compression and Brinell Indentation were utilized to cause plastic deformation, and thereafter some deformed samples received heat treatment. Surface topography around the indent confirms the anisotropic plasticity of single crystal superalloys. The influential distance below the indent is much larger than that on the indent surface. Microstructural observation by Electron Back-scatter Diffraction (EBSD) shows that it is easier for nucleation and grain boundary migration in the dendritic arms. In addition, the recovery has almost no effect on preventing recrystallization for deformed samples with small plastic strains (around 5%).

• Periodical: Materials Science Forum (Volume 850)
• Pages: 47-55
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.47
• Online since: March 2016
• Authors: Zhong Lin Li, Qing Yan Xu*, Ji Chun Xiong, Jia Rong Li, Bai Cheng Liu
• Keywords: Indentation, Recovery, Recrystallization, Single Crystal, Superalloys

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