Investigation into Application of 16MnD in Radioactive Material Transport Casks

PENG Yunjie

doi:10.19554/j.cnki.1001-3563.2026.01.035

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (1) : 306-313. DOI: 10.19554/j.cnki.1001-3563.2026.01.035

Defense Equipment

Investigation into Application of 16MnD in Radioactive Material Transport Casks

PENG Yunjie

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Abstract

The work aims to investigate the toughness-brittleness properties of 16MnD forgings at low temperature, and explore the application scope of 16MnD in the field of radioactive material transport casks. A series of low-temperature drop-weight tests and low-temperature Charpy impact tests were conducted on three heats of 16MnD forgings with thicknesses of 35 mm and 226 mm. Based on the test results, the nil-ductility transition temperature, reference nil-ductility transition temperature, and toughness-brittleness transition curve of the 16MnD material were determined. Both conventional anti-brittle fracture assessment methods and fracture mechanics analysis were applied to confirm compliance with the brittle fracture resistance requirements for radioactive material transport casks. The results indicated that the nil-ductility transition temperature and reference nil-ductility transition temperature of the 16MnD forgings were both around -40 °C, while the toughness-brittleness transition temperature (FATT50) ranges from -10 °C to 10 °C. The 16MnD forgings exhibit excellent low-temperature performance, providing a foundation for their application in the field of radioactive material transport casks.

Key words

16MnD / low-temperature toughness / radioactive material transport casks

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PENG Yunjie. Investigation into Application of 16MnD in Radioactive Material Transport Casks[J]. Packaging Engineering. 2026, 47(1): 306-313 https://doi.org/10.19554/j.cnki.1001-3563.2026.01.035

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