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This study introduces a public dataset of 4,961 Charpy impact tests for reactor pressure vessel (RPV) steels to address specimen size effects. The data aids in understanding and correlating mechanical properties from small to large RPV steel specimens.

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Area of Science:

  • Materials Science
  • Nuclear Engineering
  • Mechanical Engineering

Background:

  • Reactor pressure vessel (RPV) steels are vital for nuclear reactor safety and structural integrity under extreme conditions.
  • Evaluating RPV steel mechanical properties often requires sub-sized specimens due to irradiation constraints, leading to size effects.
  • Existing methods for correlating sub-sized to full-sized specimen data are often condition-specific.

Purpose of the Study:

  • To establish a comprehensive public dataset of 4,961 Charpy impact test records for RPV steels.
  • To advance the understanding of specimen size effects in Charpy impact testing of RPV steels.
  • To support the validation of existing correlation methods and the development of new data-driven approaches.

Main Methods:

  • Compiled a dataset of 4,961 Charpy impact test records for RPV steels.
  • Conducted a comprehensive literature review across 109 peer-reviewed publications.
  • Included detailed information on material composition, manufacturing, specimen dimensions, testing conditions, and results.

Main Results:

  • A public dataset of 4,961 Charpy impact test records for RPV steels is now available.
  • The dataset offers extensive data on RPV steel properties, manufacturing, and testing parameters.
  • It provides a foundation for analyzing specimen size effects and improving correlation methodologies.

Conclusions:

  • The developed dataset is a significant resource for RPV steel research.
  • It will facilitate improved understanding and modeling of specimen size effects in Charpy impact testing.
  • The data supports the development of more accurate methods for correlating test results from sub-sized to full-sized RPV steel specimens.