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The study investigates deformation-induced nanocrystallization in bulk metallic glasses (BMGs) through micro indentation techniques. Micro indentation experiments on Zr50Cu40Al10 BMG revealed localized shear bands and crystallization phenomena below the material’s crystallization temperature, suggesting enhanced atomic mobility under high stress conditions during indentation. Crystallization pattern changes depending on the indentation load as well as distance from the indentation region. Indicating deformation-induced nanocrystallization rather than artifactual processes such as sample preparation effects or ion beam heating. The comparison of Differential Scanning Calorimetry (DSC) curves reveals a crystallization taking place well below the crystallization temperature. The angle between the shear bands formed on indentation was found to be on average 80°.

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Investigation of Nanocrystallization in Zr50Cu40Al10 Bulk Metallic Glass on Micro Indentation Using Transmission Electron Microscopy

  • 会议论文

  • 发表日期：

    2026年

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  • Ashwinee Kumar,
  • R. K. Mandal

摘要

The study investigates deformation-induced nanocrystallization in bulk metallic glasses (BMGs) through micro indentation techniques. Micro indentation experiments on Zr50Cu40Al10 BMG revealed localized shear bands and crystallization phenomena below the material’s crystallization temperature, suggesting enhanced atomic mobility under high stress conditions during indentation. Crystallization pattern changes depending on the indentation load as well as distance from the indentation region. Indicating deformation-induced nanocrystallization rather than artifactual processes such as sample preparation effects or ion beam heating. The comparison of Differential Scanning Calorimetry (DSC) curves reveals a crystallization taking place well below the crystallization temperature. The angle between the shear bands formed on indentation was found to be on average 80°.