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<p>Understanding the evolution of microstructures in materials used in high-risk environments is essential. This study aimed to understand incipient grain growth in additively manufactured pure Nickel at higher temperatures. This was done by raising the temperature of nickel samples past 1000 °C and performing intermittent EBSD analysis during the process. The analysis was focused on measuring the grain structure change and monitoring the misorientation within the lattice as recovery occurred. There were two main foci in this study: determine the temperature where grain growth begins and investigate the lattice re-orientation, particularly around voids as the sample was heated. Grain coarsening began around 650 °C, and local misorientation decreased around the voids, especially smaller voids, as the temperature was raised. These results offer the foundation to understand further how microstructure evolution occurs in additively processed Nickel-based alloys.</p>

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High-Temperature Microstructure Evolution of Additively Manufactured Nickel Using In Situ Electron Backscatter Diffraction

  • 期刊论文

  • 发表日期：

    2025年6月4日

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  • Aditya Bose-Bandyopadhyay,
  • David P. Field

摘要

Understanding the evolution of microstructures in materials used in high-risk environments is essential. This study aimed to understand incipient grain growth in additively manufactured pure Nickel at higher temperatures. This was done by raising the temperature of nickel samples past 1000 °C and performing intermittent EBSD analysis during the process. The analysis was focused on measuring the grain structure change and monitoring the misorientation within the lattice as recovery occurred. There were two main foci in this study: determine the temperature where grain growth begins and investigate the lattice re-orientation, particularly around voids as the sample was heated. Grain coarsening began around 650 °C, and local misorientation decreased around the voids, especially smaller voids, as the temperature was raised. These results offer the foundation to understand further how microstructure evolution occurs in additively processed Nickel-based alloys.