Growth selection induced residual stresses and fracture behavior of as-deposited thermal barrier coatings Suruj Protim Neog, Namit Pai, Deepesh Yadav, Nicholas Curry, Shrikant Joshi, et al. Journal of the American Ceramic Society, 2024 This study explored the impact of microstructure and residual stresses on the fracture behavior of as‐deposited thermal barrier coatings (TBCs). Two distinct air plasma sprayed TBCs, Coating A (conventional lamellar porous) and Coating B (dense vertically cracked), were investigated. Coating A involved coarser but less dense powders as feedstock and a lower substrate temperature during deposition. Further, Coating A had times higher randomly oriented porosities, finer grains, lower hardness, and elastic stiffness. Strikingly, however, the fracture strength was higher for the porous as‐deposited Coating A. The answer to this apparent contradiction emerged from the intergranular residual stresses. These were measured using both X‐ray diffraction and high‐resolution‐electron backscattered diffraction. Coating B, deposited at a higher substrate temperature, had clear growth selection of oriented grains. These also had more out‐of‐plane normal and shear residual stresses. The growth selection induced residual stresses appeared responsible for the decohesion of Coating B from the substrate and, correspondingly, lower fracture strength.
Insights into the stability of retained austenite during wear Suruj Protim Neog, Arijit Lodh, Anish Karmakar, Akhil G. Nair, Arup Dasgupta, et al. Philosophical Magazine, 2023 Transformation-induced plasticity mechanism is a very interesting phenomenon wherein a certain amount of austenite, which is thermally stable at room temperature but can be transformed to martensite during deformation, is retained in the microstructure. The amount of deformation (either by tensile, compressive or shear) that the austenite regions can withstand before they transform to martensite depends on their stability which is a function of the chemical-free energy and the severity of straining. In the current work, a bainitic steel with some retained austenite (RA), exposed to sliding wear in a pin-on-disc wear testing machine, was considered for the study. This paper aims to quantify the shear strain developed in the deformed subsurface region due to wear by using a simple image digitisation technique, and the stability aspect of RA for a complicated deformation mechanism like wear was studied considering the thermodynamics of austenite to ferrite transformations.
Understanding the complexities of dry sliding wear behaviour of steels Suruj Protim Neog, Amit Ranjan Kumar, Subhankar Das Bakshi, Sourav Das Materials Science and Technology United Kingdom, 2021 Sliding wear behaviour is a very complex procedure where several parameters, including nature of the two abrading bodies and variables related to the conditions under which the actual experiments were conducted, may influence the final material loss. Disentangling these parameters will improve the understanding and the predictions can be compared with the performance of the existing materials. An attempt was made in the current work to develop a model, considering several material specific variables (e.g. composition, microstructure, hardness, etc.) along with the experimental conditions (load, distance, temperature, etc.). The predictions were quite consistent with existing knowledge. The model was also validated with actual experiments with varying load and distance slid conditions which were never known to the model.
Characterization of Dynamic Recrystallization and Microstructural Evolution using 3D Workability Map of Homogenized Co12. 5Cr12. 5Cu12. 5Fe12. 5Ni37. 5Si12. 5 High-Entropy Alloy S Kumar, N Raja, M Sinha, SP Neog, C Pandey, M Chopkar Journal of Materials Engineering and Performance, 1-19 , 2026 2026
Unlocking Superior Wear Resistance in Cu-Modified Steels Through Enhanced Oxide Layer Adhesion KD Sharma, A Sarkar, SP Neog, S Patra, A Karmakar Metallurgical and Materials Transactions A 57 (1), 36-45 , 2026 2026
Effect of tempering conditions on microstructure evolution and sliding wear behaviour of continuously cooled carbide-free bainitic steel AS Rajput, SP Neog, S Das Tribology International 204, 110519 , 2025 2025 Citations: 12
Growth selection induced residual stresses and fracture behavior of as‐deposited thermal barrier coatings SP Neog, N Pai, D Yadav, N Curry, S Joshi, BN Jaya, I Samajdar Journal of the American Ceramic Society 107 (12), 8459-8473 , 2024 2024 Citations: 5
A novel macroscopic computational methodology to predict the locations and orientation of solidification-cracks: Application to pulsed laser welding O Satbhai, SP Neog, S Karagadde, I Samajdar, BN Jaya, H Kumar, ... International Journal of Heat and Mass Transfer 204, 123835 , 2023 2023 Citations: 10
Hot Deformation Response and Microstructural Evolution of Cocrcufeni3si High Entropy Alloy Using 3d Workability Map S Kumar, N Raja, M Sinha, SP Neog, S Mula, MK Chopkar Available at SSRN 4631918 , 2023 2023
Quantification of shear strain development in the through thickness direction during sliding wear SP Neog, AG Nair, A Dasgupta, S Das Bakshi, S Das Metallurgical and Materials Transactions A , 2022 2022 Citations: 5
Insights into the stability of retained austenite during wear SP Neog, A Lodh, A Karmakar, AG Nair, A Dasgupta, S Das Bakshi, ... Philosophical Magazine , 2022 2022 Citations: 8
Understanding the complexities of dry sliding wear behaviour of steels using ANN SP Neog, AR Kumar, S Das Bakshi, S Das Materials Science and Technology , 2021 2021 Citations: 14
Effect of normal loading on microstructural evolution and sliding wear behaviour of novel continuously cooled carbide free bainitic steel SP Neog, SD Bakshi, S Das Tribology International 157, 106846 , 2021 2021 Citations: 46
Surface modification of AISI 8620 steel by in-situ grown TiC particle using TIG arcing NK Paraye, SP Neog, PK Ghosh, S Das Surface and Coatings Technology 405, 126533 , 2021 2021 Citations: 38
Microstructural evolution of novel continuously cooled carbide free bainitic steel during sliding wear SP Neog, SD Bakshi, S Das Wear 456, 203359 , 2020 2020 Citations: 30
MOST CITED SCHOLAR PUBLICATIONS
Effect of normal loading on microstructural evolution and sliding wear behaviour of novel continuously cooled carbide free bainitic steel SP Neog, SD Bakshi, S Das Tribology International 157, 106846 , 2021 2021 Citations: 46
Surface modification of AISI 8620 steel by in-situ grown TiC particle using TIG arcing NK Paraye, SP Neog, PK Ghosh, S Das Surface and Coatings Technology 405, 126533 , 2021 2021 Citations: 38
Microstructural evolution of novel continuously cooled carbide free bainitic steel during sliding wear SP Neog, SD Bakshi, S Das Wear 456, 203359 , 2020 2020 Citations: 30
Understanding the complexities of dry sliding wear behaviour of steels using ANN SP Neog, AR Kumar, S Das Bakshi, S Das Materials Science and Technology , 2021 2021 Citations: 14
Effect of tempering conditions on microstructure evolution and sliding wear behaviour of continuously cooled carbide-free bainitic steel AS Rajput, SP Neog, S Das Tribology International 204, 110519 , 2025 2025 Citations: 12
A novel macroscopic computational methodology to predict the locations and orientation of solidification-cracks: Application to pulsed laser welding O Satbhai, SP Neog, S Karagadde, I Samajdar, BN Jaya, H Kumar, ... International Journal of Heat and Mass Transfer 204, 123835 , 2023 2023 Citations: 10
Insights into the stability of retained austenite during wear SP Neog, A Lodh, A Karmakar, AG Nair, A Dasgupta, S Das Bakshi, ... Philosophical Magazine , 2022 2022 Citations: 8
Growth selection induced residual stresses and fracture behavior of as‐deposited thermal barrier coatings SP Neog, N Pai, D Yadav, N Curry, S Joshi, BN Jaya, I Samajdar Journal of the American Ceramic Society 107 (12), 8459-8473 , 2024 2024 Citations: 5
Quantification of shear strain development in the through thickness direction during sliding wear SP Neog, AG Nair, A Dasgupta, S Das Bakshi, S Das Metallurgical and Materials Transactions A , 2022 2022 Citations: 5
Characterization of Dynamic Recrystallization and Microstructural Evolution using 3D Workability Map of Homogenized Co12. 5Cr12. 5Cu12. 5Fe12. 5Ni37. 5Si12. 5 High-Entropy Alloy S Kumar, N Raja, M Sinha, SP Neog, C Pandey, M Chopkar Journal of Materials Engineering and Performance, 1-19 , 2026 2026
Unlocking Superior Wear Resistance in Cu-Modified Steels Through Enhanced Oxide Layer Adhesion KD Sharma, A Sarkar, SP Neog, S Patra, A Karmakar Metallurgical and Materials Transactions A 57 (1), 36-45 , 2026 2026
Hot Deformation Response and Microstructural Evolution of Cocrcufeni3si High Entropy Alloy Using 3d Workability Map S Kumar, N Raja, M Sinha, SP Neog, S Mula, MK Chopkar Available at SSRN 4631918 , 2023 2023
