Measurement of Dynamic Mechanical Property Parameters of 12X18H10T at High Strain Rates

Qin Niu; Xue Sheng Zhang; Yong Xin Zhang

doi:10.4028/p-P76p9l

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HomeMaterials Science ForumMaterials Science Forum Vol. 1137Measurement of Dynamic Mechanical Property...

Measurement of Dynamic Mechanical Property Parameters of 12X18H10T at High Strain Rates

Abstract:

To measure the dynamic mechanical properties of 12X18H10T stainless steel at high strain rates, dynamic impact tests were conducted on 12X18H10T specimens at three high strain rates using the SHPB apparatus. The dynamic engineering stress-strain data and true stress-strain data of 12X18H10T stainless steel at different strain rates were obtained using the classical three-wave method theory. The engineering stress-strain data and the Cowper-Symonds constitutive model were used to fit least squares data to obtain the dynamic yield strength and strain rate-dependent parameters separately. This provides input data for the drop test simulation of shipping containers of radioactive materials considering the strain rate effect.

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Periodical:

Materials Science Forum (Volume 1137)

Pages:

57-63

DOI:

https://doi.org/10.4028/p-P76p9l

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Online since:

December 2024

Authors:

Qin Niu, Xue Sheng Zhang*, Yong Xin Zhang

Keywords:

Cowper-Symonds Model, Dynamic Impact Test, Least Squares Method, Split Hopkinson Pressure Bar (SHPB) Apparatus

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* - Corresponding Author

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