Computing the dynamic friction coefficient and evaluation of radiation shielding performance for AISI 304 stainless steel

The cold rolling deformation (CRD) has been employed to produce the different AISI 304 stainless-steel (AISI 304 S) samples containing different percent of the martensitic phase. The microstructure observations have appeared the different percentages of the martensitic phase included in the austenitic phase. The hardness amelioration mainly relied on the character, growth, and distribution of the martensitic phase. Additionally, the findings of wear tests clarify that the sliding wear rate decrease with the increase of the martensite phase. The worn surfaces have revealed the debris mechanism associated with delamination spots is predominant during wear tests. Also, the present study extends to evaluate the dynamic friction coefficients (mu) using temperaturetime curve throughout performing the dry sliding wear tests. The comparison of measured and computed values of mu has revealed the good agreement between both. Moreover, neutrons and gamma-rays shielding performance of AISI 304 S were studied using Monte Carlo (MCNP5) and WinXCom programs. The MCNP5 calculations were performed for neutrons in the energy range of 10-5 eV to 20 MeV. While the shielding parameters of gamma rays were done in the energy range of 0.015-15 MeV. The results of radiation shielding showed that the AISI 304 S owns a good shielding performance against neutrons and gamma-rays compared to previously published studies.

Automated summary

The study utilized cold rolling deformation to produce different samples of AISI 304 stainless steel with varying martensitic phase content. Hardness improvement depended on the characteristics, growth, and distribution of the martensitic phase, with a decrease in wear rate as the martensite phase increased. Radiation shielding tests showed that AISI 304 stainless steel exhibited good shielding performance against neutrons and gamma-rays compared to previous studies.