Akshay Pathania

Scopus Publications

Fractal Dimension Analysis of Fatigue-Fractured Surface of LPBF-Processed Ti6Al4V
Akshay Pathania, S. Anand Kumar, B. K. Nagesha
Transactions of the Indian Institute of Metals, 2026
Correlating microstructure, mechanical properties, and sliding wear behavior in LPBF-manufactured Ti6Al4V: role of build orientation and post-heat treatment
Akshay Pathania, Anand Kumar Subramaniyan, Nagesha BK
Progress in Additive Manufacturing, 2026
Effect of post-heat treatment with super β transus temperature on the damping behaviour of LPBF-processed Ti6Al4V thin rotor blade
Akshay Pathania, Anand Kumar S., Nagesha B.K., Sanjay Barad
Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2025
This article investigates the damping behaviour of laser powder bed fusion-processed Ti6Al4V thin plate samples and thin rotor blades. The effect of microstructural changes owing to the post heat treatments (PHTs – 850 °C, 950 °C and 1050 °C) on damping behaviour was assessed. The microstructural characterisation was performed using optical microscopy, X-ray diffraction and scanning electron microscope techniques. The impact hammer test was performed on thin plate samples and rotor blades to characterise damping behaviour. The microstructure of the thin plate samples subjected to PHT conditions varied in grain structure and morphology compared to the as-printed ones. Further, PHT at a higher temperature (i.e. 1050 °C) induces a higher amount of β phase than the other PHT temperatures. The PHT performed at 1050 °C exhibited α- Widmanstätten microstructure consisting of elongated β and a small amount of α. Moreover, the frequency response function plots revealed broader peaks for thin plate samples and the rotor blade than others. The PHT was favourable in enhancing the α lath thickness and β volume fraction, increasing the damping ratio. The results showed that PHT performed at 1050 °C improves the overall damping of ∼348% and ∼140% of rotor blade and thin plate samples, respectively. The amplitude decay for the rotor blade subjected to PHT at 1050 °C was ∼66% shorter than the as-printed one due to high β phase content relieving the energy resulting in a high damping ratio.
Influence of post-heat treatment on microstructure, mechanical, and wear properties of maraging steel fabricated using direct metal laser sintering technique
Anand Kumar Subramaniyan, Sudarshan Reddy Anigani, Snehith Mathias, Akshay Pathania, Prasad Raghupatruni, Shubhendra S Yadav
Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2025
The post-heat treatment of direct metal laser sintered parts is expected to have superior mechanical properties. Therefore, the purpose of the present study is to investigate the post-heat treatment effect on the microstructure, mechanical and wear properties of direct metal laser sintering processed maraging steel. Hence, a systematic methodology for microstructural characterization, mechanical properties, and tribological performance evaluation was performed. The microstructural examinations were performed using optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction technique. The micro-hardness and tensile properties were determined. The unidirectional sliding wear test was performed using a pin on disc wear testing machine for three different sliding velocities (0.8, 1.2, and 1.6 m/s) and three different normal loads (5, 10, and 15 N). The present study’s findings establish that the post-heat treatment techniques significantly altered the microstructural morphology and features. The results showed that the heat-treated sample had finer and non-continuous microstructure and more complex intermetallic precipitate phases, leading to higher hardness (∼64%) and higher tensile strength properties (70–80%) compared to the as-printed sample. The unidirectional sliding wear test results showed that the sliding velocity significantly affected frictional and wear characteristics of direct metal laser sintering processed maraging steel. The wear resistance of the heat-treated sample was three times higher than the as-printed sample, particularly at higher sliding velocities. In addition, the lower coefficient of friction values (∼24%) was observed for heat-treated sample compared to as-printed sample at higher sliding velocities. The post-heat treatment aids as an effective method to enhance mechanical properties of direct metal laser sintered parts and qualify them for tribological applications. The results endorse the suitability of the heat-treated direct metal laser sintered maraging steel in practical tool and die applications involving extreme tribological operating conditions such as higher sliding velocities and contact stresses.
Influence of post-heat treatment with super β transus temperature on the tensile behaviour of LPBF processed Ti6Al4V
Akshay Pathania, S Anand Kumar, BK Nagesha
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2025
This paper investigates the tensile behaviour of Laser powder bed fusion (LPBF) processed Ti6Al4 V samples under three build orientations. The effect of microstructural changes from the post-heat treatments (PHTs – 850 °C, 950 °C 1050 °C) was assessed. The microstructural characterization was performed using optical microscopy, X-ray diffraction, and SEM techniques. The tensile tests were performed using a uniaxial universal testing machine (UTM). The fractal dimension analysis was performed on the fractured surfaces using ImageJ software integrated with an open-source MultiFrac plug-in. The PHT at a higher temperature (i.e., 1050 °C) induces a higher amount of β phase than the other PHTs. The PHT performed at 1050 °C exhibited α-Widmanstatten microstructure consisting of elongated β and a small amount of α. The PHT induces an isotropic behaviour in the LPBF-processed samples. However, the ductility of specimens subjected to PHT at 1050 °C showed ∼ 67%, 40%, and 177% improvement under horizontal (0°), inclined (45°), and vertical (90°) orientations than as-printed samples. Further fractal dimension analysis corroborates well with the ductility values of PHT samples. Therefore, the combination of fractography analysis and fractal dimension approach can be a promising methodology towards fractured surface characterization of additively manufactured metal parts.
Facile production of titanium aluminide intermetallic powder for powder metallurgy and metal additive manufacturing
B. Mallikarjuna, M. Govindaraju, P. Akshay, S. Anand Kumar, B. K. Nagesha
Progress in Additive Manufacturing, 2025
Influence of post-heat treatment with super β transus temperature on the fatigue behaviour of LPBF processed Ti6Al4V
Akshay Pathania, Anand Kumar Subramaniyan, Nagesha Bommanahalli Kenchappa
International Journal of Fracture, 2024
Modal Characterization of Additively Manufactured Chiral Structure: Suppression of Its Multiple Responses
Rukmangad S. Barad, Akshay Pathania, B. K. Nagesh, S. Anand Kumar
Springer Proceedings in Materials, 2024
Skin-Core Scanning Strategy in LPBF Processed Ti6Al4V: Effects on Microstructure and Microhardness
Akshay Pathania, Anand Kumar Subramaniyan, Nagesha Bommanahalli Kenchappa
Materials Performance and Characterization, 2023
ABSTRACT The skin-core scanning strategy in the present study was employed to observe microstructural changes in laser powder bed fusion processed Ti6Al4V. The microstructural characterization was carried out using optical microscopy and microhardness tests were performed. The microstructural investigation indicated that the skin region had a 34 % smaller grain size than the core region, and the presence of α martensite needles. Because of the finer grains, the microhardness values were marginally higher on the skin than in the core region. The current study’s findings open a pathway to tailor functional and architectured microstructures with desired mechanical properties for end-use critical applications.
Effects of Graded Powder Dosage Factors on the Densification of LPBF Processed Inconel 718
Amit Kumar Tigga, Subramaniyan Anand Kumar, Nagesha Bommanahalli Kenchappa, Akshay Pathania
Transactions of the Indian Institute of Metals, 2023
Effect of interface shear strength on the support removal of laser powder bed fusion manufactured gear-type Ti6Al4 V parts
Akshay Pathania, S Anand Kumar, BK Nagesha
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2023
Densification behaviour of laser powder bed fusion processed Ti6Al4V: Effects of customized heat treatment and build direction
Akshay Pathania, Anand Kumar Subramaniyan, Nagesha Bommanahalli Kenchappa
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2023
Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy
Akshay Pathania, Anand Kumar Subramaniyan, B. K. Nagesha
Progress in Additive Manufacturing, 2022
Correction to: Inspection of Additively Manufactured Aero-engine Parts Using Computed Radiography Technique (Journal of Materials Engineering and Performance, (2022), 31, 8, (6322-6331), 10.1007/s11665-022-06890-6)
B. K. Nagesha, S. Anand Kumar, S. Rajeswari, Sanjay Barad, Akshay Pathania
Journal of Materials Engineering and Performance, 2022
Inspection of Additively Manufactured Aero-engine Parts Using Computed Radiography Technique
B. K. Nagesha, S. Anand Kumar, S. Rajeswari, Sanjay Barad, Akshay Pathania
Journal of Materials Engineering and Performance, 2022
Applications of Additive Manufacturing Techniques in Aerospace Industry
S. Anand Kumar, Akshay Pathania, Abhishek Shrivastava, V. Rajkumar, Prasad Raghupatruni
Nanotechnology Based Additive Manufacturing Product Design Properties and Applications Volumes 1 2, 2022
Reclamation of titanium alloy based aerospace parts using laser based metal deposition methodology
Akshay Pathania, S. Anand Kumar, B.K. Nagesha, Sanjay Barad, T.N. Suresh
Materials Today Proceedings, 2021
A thermo-Mechanical modelling approach on the residual stress prediction of SLM processed HPNGV aeroengine part
BK. Nagesha, S. Anand Kumar, K. Vinodh, Akshay Pathania, Sanjay Barad
Materials Today Proceedings, 2020
Development and analysis of tribological behavior of microwave processed EWAC + 20% WC10Co2Ni composite cladding on mild steel substrate
Akshay Pathania, Satnam Singh, Dheeraj Gupta, Vivek Jain
Journal of Manufacturing Processes, 2015

RECENT SCHOLAR PUBLICATIONS

Fractal Dimension Analysis of Fatigue-Fractured Surface of LPBF-Processed Ti6Al4V
A Pathania, SA Kumar, BK Nagesha
Transactions of the Indian Institute of Metals 79 (4), 60 , 2026
2026
Correlating microstructure, mechanical properties, and sliding wear behavior in LPBF-manufactured Ti6Al4V: role of build orientation and post-heat treatment
A Pathania, AK Subramaniyan, N BK
Progress in Additive Manufacturing 11 (2), 1533-1561 , 2026
2026
Citations: 3
Influence of post-heat treatment on microstructure, mechanical, and wear properties of maraging steel fabricated using direct metal laser sintering technique
AK Subramaniyan, SR Anigani, S Mathias, A Pathania, P Raghupatruni, ...
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2025
2025
Citations: 18
Effect of post-heat treatment with super β transus temperature on the damping behaviour of LPBF-processed Ti6Al4V thin rotor blade
A Pathania, AK S, N BK, S Barad
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2025
2025
Citations: 2
Influence of post-heat treatment with super β transus temperature on the tensile behaviour of LPBF processed Ti6Al4V
A Pathania, S Anand Kumar, BK Nagesha
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2025
2025
Citations: 1
Facile production of titanium aluminide intermetallic powder for powder metallurgy and metal additive manufacturing
BKN B Mallikarjuna, M Govindaraju, P Akshay, S Anand Kumar
Progress in Additive Manufacturing, 1-10 , 2024
2024
Citations: 2
Influence of post-heat treatment with super β transus temperature on the fatigue behaviour of LPBF processed Ti6Al4V: A. Pathania et al.
A Pathania, AK Subramaniyan, NB Kenchappa
International Journal of Fracture 246 (2), 345-361 , 2024
2024
Citations: 5
Suppression of Its Multiple Responses
RS Barad, A Pathania, BK Nagesh, SA Kumar
Dynamic Behavior of Soft and Hard Materials, Volume 3: Proceedings of 13th … , 2023
2023
Skin-core scanning strategy in LPBF processed Ti6Al4V: effects on microstructure and microhardness
A Pathania, AK Subramaniyan, N Bommanahalli Kenchappa
Materials Performance and Characterization 12 (1), 287-292 , 2023
2023
Citations: 3
Effects of graded powder dosage factors on the densification of LPBF processed Inconel 718
AK Tigga, SA Kumar, NB Kenchappa, A Pathania
Transactions of the Indian Institute of Metals 76 (12), 3473-3481 , 2023
2023
Citations: 2
Densification behaviour of laser powder bed fusion processed Ti6Al4V: Effects of customized heat treatment and build direction
A Pathania, AK Subramaniyan, N Bommanahalli Kenchappa
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2023
2023
Citations: 3
Effect of interface shear strength on the support removal of laser powder bed fusion manufactured gear-type Ti6Al4 V parts
A Pathania, SA Kumar, BK Nagesha
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2023
2023
Citations: 3
Applications of additive manufacturing techniques in aerospace industry
SA Kumar, A Pathania, A Shrivastava, V Rajkumar, P Raghupatruni
Nanotechnology‐Based Additive Manufacturing: Product Design, Properties and … , 2023
2023
Citations: 12
Influence of Post Heat-Treatments on Microstructural and Mechanical Performances of LPBF-Manufactured Ti6Al4V Parts
A Pathania
Department of Mechanical Engineering, IIT Jammu , 2023
2023
Post-processing of the support structure of LPBF-processed Ti6Al4V part: Effect of process parameters, Oral Presentation, International Conference
A Pathania, SA Kumar, BK Nagesha
SIRAMM-23, Romania , 2023
2023
Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy
A Pathania, AK Subramaniyan, BK Nagesha
Progress in Additive Manufacturing 7 (6), 1323-1343 , 2022
2022
Citations: 41
Densification behaviour of laser powder bed fusion processed Ti6Al4V: Effects of customized heat treatment (CHT) and build direction
A Pathania, AK Subramaniyan, NB Kenchappa
2022
Modal characterization of additively manufactured chiral structure: suppression of its multiple responses
RS Barad, A Pathania, BK Nagesh, S Anand Kumar
International Symposium on Plasticity and Impact Mechanics, 33-42 , 2022
2022
Citations: 2
Inspection of additively manufactured aero-engine parts using computed radiography technique
BK Nagesha, SA Kumar, S Rajeswari, S Barad, A Pathania
Journal of Materials Engineering and Performance 31 (8), 6322-6331 , 2022
2022
Citations: 14
Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy. Prog Addit Manuf 7: 1323–1343
A Pathania, AK Subramaniyan, BK Nagesha
2022
Citations: 5

MOST CITED SCHOLAR PUBLICATIONS

Development and analysis of tribological behavior of microwave processed EWAC+ 20% WC10Co2Ni composite cladding on mild steel substrate
A Pathania, S Singh, D Gupta, V Jain
Journal of Manufacturing Processes 20, 79-87 , 2015
2015.0
Citations: 68
Reclamation of titanium alloy based aerospace parts using laser based metal deposition methodology
A Pathania, SA Kumar, BK Nagesha, S Barad, TN Suresh
Materials Today: Proceedings 45, 4886-4892 , 2021
2021.0
Citations: 47
A thermo–Mechanical modelling approach on the residual stress prediction of SLM processed HPNGV aeroengine part
BK Nagesha, SA Kumar, K Vinodh, A Pathania, S Barad
Materials Today: Proceedings 44, 4990-4996 , 2021
2021.0
Citations: 42
Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy
A Pathania, AK Subramaniyan, BK Nagesha
Progress in Additive Manufacturing 7 (6), 1323-1343 , 2022
2022.0
Citations: 41
Influence of post-heat treatment on microstructure, mechanical, and wear properties of maraging steel fabricated using direct metal laser sintering technique
AK Subramaniyan, SR Anigani, S Mathias, A Pathania, P Raghupatruni, ...
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2025
2025.0
Citations: 18
Inspection of additively manufactured aero-engine parts using computed radiography technique
BK Nagesha, SA Kumar, S Rajeswari, S Barad, A Pathania
Journal of Materials Engineering and Performance 31 (8), 6322-6331 , 2022
2022.0
Citations: 14
Applications of additive manufacturing techniques in aerospace industry
SA Kumar, A Pathania, A Shrivastava, V Rajkumar, P Raghupatruni
Nanotechnology‐Based Additive Manufacturing: Product Design, Properties and … , 2023
2023.0
Citations: 12
Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy, Prog. Addit. Manuf. 7 (2022) 1323–1343
A Pathania, AK Subramaniyan, BK Nagesha
Citations: 8
Influence of post-heat treatment with super β transus temperature on the fatigue behaviour of LPBF processed Ti6Al4V: A. Pathania et al.
A Pathania, AK Subramaniyan, NB Kenchappa
International Journal of Fracture 246 (2), 345-361 , 2024
2024.0
Citations: 5
Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy. Prog Addit Manuf 7: 1323–1343
A Pathania, AK Subramaniyan, BK Nagesha
2022.0
Citations: 5
Correlating microstructure, mechanical properties, and sliding wear behavior in LPBF-manufactured Ti6Al4V: role of build orientation and post-heat treatment
A Pathania, AK Subramaniyan, N BK
Progress in Additive Manufacturing 11 (2), 1533-1561 , 2026
2026.0
Citations: 3
Skin-core scanning strategy in LPBF processed Ti6Al4V: effects on microstructure and microhardness
A Pathania, AK Subramaniyan, N Bommanahalli Kenchappa
Materials Performance and Characterization 12 (1), 287-292 , 2023
2023.0
Citations: 3
Densification behaviour of laser powder bed fusion processed Ti6Al4V: Effects of customized heat treatment and build direction
A Pathania, AK Subramaniyan, N Bommanahalli Kenchappa
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2023
2023.0
Citations: 3
Effect of interface shear strength on the support removal of laser powder bed fusion manufactured gear-type Ti6Al4 V parts
A Pathania, SA Kumar, BK Nagesha
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2023
2023.0
Citations: 3
Effect of post-heat treatment with super β transus temperature on the damping behaviour of LPBF-processed Ti6Al4V thin rotor blade
A Pathania, AK S, N BK, S Barad
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2025
2025.0
Citations: 2
Facile production of titanium aluminide intermetallic powder for powder metallurgy and metal additive manufacturing
BKN B Mallikarjuna, M Govindaraju, P Akshay, S Anand Kumar
Progress in Additive Manufacturing, 1-10 , 2024
2024.0
Citations: 2
Effects of graded powder dosage factors on the densification of LPBF processed Inconel 718
AK Tigga, SA Kumar, NB Kenchappa, A Pathania
Transactions of the Indian Institute of Metals 76 (12), 3473-3481 , 2023
2023.0
Citations: 2
Modal characterization of additively manufactured chiral structure: suppression of its multiple responses
RS Barad, A Pathania, BK Nagesh, S Anand Kumar
International Symposium on Plasticity and Impact Mechanics, 33-42 , 2022
2022.0
Citations: 2
Influence of post-heat treatment with super β transus temperature on the tensile behaviour of LPBF processed Ti6Al4V
A Pathania, S Anand Kumar, BK Nagesha
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2025
2025.0
Citations: 1
Fractal Dimension Analysis of Fatigue-Fractured Surface of LPBF-Processed Ti6Al4V
A Pathania, SA Kumar, BK Nagesha
Transactions of the Indian Institute of Metals 79 (4), 60 , 2026
2026.0

Akshay Pathania

RESEARCH, TEACHING, or OTHER INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS