Ondrej Muránsky

Understanding the recrystallisation behaviour of Zircaloy-4

Mia Maric, Rhys Thomas, T. Ungár, Philipp Frankel et autres

Recrystallisation is a complex phenomenon widely utilised to obtain a good balance between strength and ductility in engineering alloys. Recrystallisation is strongly influenced by the microstructural state inherited from deformation, yet the role of local deformation heterogeneity in hexagonal close-packed alloys is …

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Electron backscatter diffraction characterisation of a zirconolite-rich multi-phase ceramic wasteform

Pranesh Dayal, Ondrej Muránsky, Nguyen, Thanh, Xuan, Daniel J. Gregg

Single- or multi-phase ceramics and glass–ceramic composite materials are widely recognised as candidate wasteforms for the immobilisation of intermediate- and high-level radioactive wastes (ILW and HLWs). The long-term performance of these materials is governed by their microstructural features which may include grain …

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Chromium depletion and microstructural effects on molten salt corrosion of wrought and wire-arc additively manufactured Hastelloy C276 alloys

Hanliang Zhu, Zhijun Qiu, Zhiyang Wang, Ondrej Muránsky et autres

The microstructure and high-temperature corrosion behavior of Hastelloy C276 fabricated by wrought processing and wire arc additive manufacturing (WAAM) were systematically investigated. The wrought alloy exhibited equiaxed grains with uniform elemental distribution, and sparse nanoscale grain boundary precipitates. In contrast, WAAM specimens …

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Navigating weld sequencing: effects on distortion, residual stress distribution, and microstructural evolution

Ravishankar Subbaramaiah, Ondrej Muránsky, Minh Tran, Joseph Polden et autres

Abstract This study employs high-fidelity thermo-metallurgical-mechanical simulations to examine the impact of weld sequencing on distortion, residual stresses, and post-weld microstructure in a two-pass single-stiffener T-joint weldment. Four welding sequences were investigated—sequential and tandem (twin torch) welding, both with and without interpass …

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Influence of post-manufacturing Hot Isostatic Pressing (HIP-ing) on the microstructure and mechanical properties of WAAM 316L stainless steel

Markus Domogala, Ondrej Muránsky, Joseph Polden, Ulf Garbe et autres

Wire-Arc Additive Manufacturing (WAAM) of 316L stainless steel typically results in columnar grains, high dislocation densities, and residual porosity, which limit toughness compared to conventional material. This study evaluates Hot Isostatic Pressing (HIP) as a post-processing route to refine the microstructure and …

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Formation of compositionally graded grains and molten-salt corrosion behavior in wire-arc additive manufactured NiMoCr alloy-cladded steel

Hanliang Zhu, Zhijun Qiu, Zhiyang Wang, Ondrej Muránsky et autres

A nickel-based alloy containing Mo and Cr as the primary alloying elements (NiMoCr) was deposited onto 316 L stainless steel via wire-arc additive manufacturing (WAAM), and its microstructural evolution and high-temperature corrosion behavior in molten FLiNaK salt at 750 °C were investigated. …

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Corrigendum to “Formation of compositionally graded grains and molten-salt corrosion behavior in wire-arc additive manufactured NiMoCr alloy-cladded steel” [Addit. Manuf. 116 (2026), 105079]

Hanliang Zhu, Zhijun Qiu, Zhiyang Wang, Ondrej Muránsky et autres

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Multi-objective surrogate-assisted calibration of CPFEM models using macroscopic response and in situ EBSD measurements of grain reorientation trajectories

Jin‐Su Choi, Ondrej Muránsky, Mark Messner, Tao Wei et autres

Crystal plasticity finite element method (CPFEM) models are widely used to simulate the deformation behaviour of polycrystalline materials, but their calibration is often limited by their high computational cost and the non-convexity of the optimisation landscape. This study develops a multi-objective surrogate-assisted …

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Recent Research on the Modelling and Reliability of Wire‐arc Additively Manufactured Steel Structures

P Imani, Y. A. Peng, Markus Domogala, Fernando Valiente Dies et autres

Abstract The paper first presents a study of the material and geometric modelling of wire‐arc additively manufactured (WAAM) structural components. The material modelling is discussed with reference to tests of tension and compression coupons of as‐built and machined materials. Particular attention is …

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On the application of PINN-style physics-regularised neural networks to high-temperature creep rupture life prediction

Ondrej Muránsky, Minh Ngoc Tran, W. Payten

This study explores the potential of physics-informed neural networks (PINNs) to improve long-term creep life predictions for 2.25Cr-1Mo (Grade 22) steel using only short-term experimental data. Three modelling approaches were evaluated: a purely physics-based semi-empirical model based on the Stress-Modified Ductility Exhaustion …

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Navigating Weld Sequencing: Effects on Distortion, Residual Stress Distribution, and Microstructural Evolution

Ravishankar Subbaramaiah, Ondrej Muránsky, Minh Ngoc Tran, Joseph Polden et autres

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Assessment of irradiation embrittlement effect on fatigue life of a pressurized-water reactor pressure vessel using the fracture toughness master curve approach

Minh Ngoc Tran, Ondrej Muránsky, B.W. Spencer

The reactor pressure vessel (RPV) is a critical structural component in pressurized-water reactors, and it is designed to withstand extreme conditions, such as high pressures, elevated temperatures, and prolonged radiation exposure. Ensuring RPV integrity is essential for the safe and reliable long-term …

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