Evaluation of radiation shielding features of Co and Ni-Based superalloys using MCNP-5 code: Potential use in nuclear safety

Sayyed, M. I. and Faras, Q. M. and Mahmoud, K. A. and Lacomme, E. and Kaky, K. M. and Khandaker, Mayeen Uddin * and Faruque, M. R. I. (2020) Evaluation of radiation shielding features of Co and Ni-Based superalloys using MCNP-5 code: Potential use in nuclear safety. Applied Sciences, 10 (21). p. 7680. ISSN 2076-3417

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Due to their excellent heat resistance, superalloys are used predominantly in the manufacturing of engine parts and accessories for aircraft and aerospace equipment. The Monte Carlo simulation (MCNP-5) code was performed to estimate the mean track length of the incident photons inside six different alloys. Then, based on the simulated track length, other important γ-ray shielding parameters were calculated. In this study, the highest mass attenuation coefficient was obtained for alloys encoded MAR-302 and MAR-247 and varied in the range 0.035–72.94 and 0.035–71.98 cm2 ·g −1, respectively. The lowest mass attenuation coefficient was found for alloys coded Inconel-718 and Nimocast-75 with a range of 0.033–59.25 and 0.32–59.30 cm2 ·g −1, respectively. Use was made of a recently developed online program Phy-X/PD to calculate the effective atomic number, equivalent atomic number, and the buildup factors for the alloys of interest. The effective removal cross-section for the fast neutron was also calculated for the studied alloys: the highest value was found for the alloys coded with Inconel-718 (P R = 0.01945 cm2 ·g −1) and Nimocast-75 (P R = 0.01940 cm2 ·g −1), and the lowest value was obtained for alloy coded MAR-302 (P R = 0.01841 cm2 ·g −1 ). Calculated data indicate that MAR-302 and MAR-247 are superior candidates for shielding of gamma-rays, while Inconel-718 and Nimocast-75 MAR-302 are suitable for the shielding of fast neutrons.

Item Type: Article
Additional Information: This article belongs to the Special Issue Advanced Alloys for Biomedical Applications
Uncontrolled Keywords: MCNP; SRIM; superalloys; γ-ray and neutron; shielding parameters
Subjects: R Medicine > R Medicine (General) > R895-920 Medical Physics/Medical Radiology
Divisions: Others > Non Sunway Academics
Sunway University > School of Engineering and Technology [formerly School of Science and Technology until 2020] > Research Centre for Applied Physics and Radiation Technologies [merged with Centre for Carbon Dioxide Capture and Utilization wef December 2023]
Depositing User: Dr Janaki Sinnasamy
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Date Deposited: 25 Mar 2021 05:36
Last Modified: 25 Mar 2021 05:36
URI: http://eprints.sunway.edu.my/id/eprint/1676

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