Comprehensive studies of SS316L/IN718 functionally gradient material fabricated with directed energy deposition: Multi-physics & multi-materials modelling and …

W Li, MN Kishore, R Zhang, N Bian, H Lu, Y Li… - Additive …, 2023 - Elsevier
Abstract Metallic Functionally gradient materials (FGMs) are featured by gradually
distributed metallic compositions generating unique mechanical and physical property …

Processing aluminum alloy with hybrid wire arc additive manufacturing and ultrasonic nanocrystalline surface modification to improve porosity, surface finish, and …

W Li, A Amanov, KM Nagaraja, B Li… - Journal of Manufacturing …, 2023 - Elsevier
In this paper, a novel hybrid wire arc additive manufacturing (WAAM) and ultrasonic
nanocrystal surface modification (UNSM) on porosity manipulation and surface properties of …

Simulation of surface roughness evolution of additively manufactured material fabricated by laser powder bed fusion and post-processed by burnishing

R Teimouri, H Sohrabpoor, M Grabowski… - Journal of Manufacturing …, 2022 - Elsevier
Additively manufactured (AM) metal parts are usually post processed by mechanical surface
finishing to attain desired surface roughness. Simulation of AM chain provides means to …

Temporally continuous thermofluidic–thermomechanical modeling framework for metal additive manufacturing

R Mathews, KM Nagaraja, R Zhang, S Sunny… - International Journal of …, 2023 - Elsevier
Additive manufacturing (AM) is known to generate large magnitudes of residual stresses
(RS) within builds due to steep and localized thermal gradients. In the current state of …

Conforming mesh modeling of multi-physics effect on residual stress in multi-layer powder bed fusion process

MN Kishore, D Qian, M Soshi, W Li - Journal of Manufacturing Processes, 2024 - Elsevier
The current research aims to predict the residual stress accumulation and evolution in the
powder bed fusion processed multi-layer thin wall structures through a conforming mesh …

Comprehensive study of the cold-temperature directed energy deposition: Multi-physics modelling and experimental validation

MN Kishore, D Qian, H Lu, W Li - Journal of Manufacturing Processes, 2024 - Elsevier
Currently almost all the directed energy deposition (DED) processes are performed under
ideal lab conditions with the room temperature close to 20° C. By contrast, the cold …

[HTML][HTML] The effect of the laser beam intensity profile in laser-based directed energy deposition: A high-fidelity thermal-fluid modeling approach

M Sattari, A Ebrahimi, M Luckabauer… - Additive Manufacturing, 2024 - Elsevier
Modeling the thermal and fluid flow fields in laser-based directed energy deposition (DED-
LB) is crucial for understanding process behavior and ensuring part quality. However …

Multiphysics modelling of wire-based directed energy deposition process with experimental validation

KM Nagaraja, L Budde, N Schwarz, J Hermsdorf… - … International Journal of …, 2025 - Springer
The laser-assisted wire-directed energy deposition (DED) process has distinct advantages
over the laser-assisted powder DED process. The material usage efficiency of wire-DED is …

[HTML][HTML] Exploratory Studies of Mechanical Properties, Residual Stress, and Grain Evolution at the Local Regions near Pores in Additively Manufactured Metals

W Li, N Bian, KM Nagaraja, X Zhang, H Lu - Materials, 2024 - mdpi.com
Directed energy deposition (DED) is gaining widespread acceptance in various industrial
applications since its unique manufacturing features allow the DED to print metallic parts …

[Retracted] Progress of Laser Processing Technology in Ferroelectric Nanocomposites

H Ding, Y Fan, H Dong, C Zhao… - Advances in Materials …, 2022 - Wiley Online Library
Although polymer‐based nanocomposites have great application potential in many fields,
compared with the application of ferroelectric nanocomposites in functional microscale …