Title: Molecular dynamics studies and irradiation effects in ODSS alloys

Authors: M.Mustafa Azeem; Zhongyu Li; Qingyu Wang; Muhammad Zubair

Addresses: College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China ' College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China ' College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China ' Department of Nuclear Engineering, University of Sharjah, 27272, UAE

Abstract: Radiation Damage (RD) studies on structural materials provide a way to understand a material's behaviour in a NPP. Oxide Dispersed Strengthened Steel (ODSS) alloys have been considered as one of the promising candidate materials in fast nuclear fission and fusion reactors. There are multiple mechanisms responsible for the microstructural changes instigating substantial alterations in the macroscopic properties of the material as well. Currently, various experimental and simulation studies on RD in ODSS alloys are being carried out owing to their radiation resistant property under different irradiation conditions. Owing to varying experimental approaches, the interpretations are usually incoherent. Simulating irradiation effect through Molecular Dynamics (MD) simulations offers necessary insight into the production of primary damage defects and microstructural evolution. MD simulations can reveal atomistic details of some hidden phenomena and their mechanistic understanding associated with ODSS alloys, such as: damage cascades, defects interface interactions and radiation stability at elevated temperature. Thus, it is highly desirable to understand the aforementioned phenomena through atomistic simulation techniques, although one simulation technique is not enough to cover ranges of RD. Hence, this paper reviews recent studies performed through MD simulations and irradiation effects in ODSS alloys.

Keywords: radiation damage; molecular dynamics simulations; oxide dispersed strengthened steel alloys; irradiation stability.

DOI: 10.1504/IJNEST.2018.097200

International Journal of Nuclear Energy Science and Technology, 2018 Vol.12 No.4, pp.381 - 399

Received: 16 Jan 2018
Accepted: 08 Nov 2018
Published online: 02 Jan 2019 *

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