A5044251399- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Welding Techniques and Residual Stresses
- High Entropy Alloys Studies
- Titanium Alloys Microstructure and Properties
- Metallic Glasses and Amorphous Alloys
- Glass properties and applications
- Phase-change materials and chalcogenides
- Laser Material Processing Techniques
- Material Dynamics and Properties
McGill University
2019-2024
National Research Council Canada
2020-2023
Middle East Technical University
2018
To better support the transition to more industrial uses of additive manufacturing, this study examined use an Arcam Q20+ 3D printer for producing heavily nested Ti-6Al-4V parts with both in-specification (IS) and out specification (OS) oxygen content in reused grade 5 powder chemistries. Both OS IS chemistries were evaluated understand their impact on build integrity static fatigue performance. The results from our evaluations showed that controlling bed preheat temperature relatively low...
Hybrid manufacturing is often used to describe a combination of additive and subtractive processes in the same build envelope. In this research study, hybrid 18Ni-300 maraging steel was investigated using Matsuura LUMEX Avance-25 system that integrates metal laser powder bed fusion (LPBF) processing with high-speed machining. A series benchmarking coupons were additively printed at four different power levels (160 W, 240 320 380 W) integration sequential machining passes after every 10...
This research study investigated the hybrid processing of 316L stainless steel using laser powder bed (LPB) with high-speed machining in same build envelope. Benchmarking at four powers (160 W, 240 320 and 380 W) was undertaken by building additively passes integrated sequentially after every ten deposited layers, followed final finishing select surfaces. The geometry inspected against computer-aided design (CAD) model showed deviations smaller than 280 µm for as-built machined surfaces,...
Following foreign object damage (FOD), a decision to repair components using novel additive manufacturing (AM) technologies has good potential enable cost‐effective and efficient solutions for aircraft gas turbine engine maintenance. To implement any new technology in the remanufacturing world, performance of must be developed understood through careful consideration impact service life‐limiting factors on structural integrity component. In modern engines, high cycle fatigue (HCF) is one...
The primary objective of this research was to develop a finite element model specifically designed for electron beam additive manufacturing (EBAM) Ti-6Al-4V understand metallurgical and mechanical aspects the process. Multiple single-layer 10-layer build samples were fabricated validate simulation results ensure reliability developed model. Thin wall plates 3 mm thickness used as substrates. Thermocouple measurements recorded simulated thermal cycles. Predicted measured temperatures,...
In this paper, the microstructure, and mechanical properties of Ti-6Al-4V fabricated through Laser Directed Energy Deposition (L-DED) process are investigated discussed. Deposited coupons were produced on wrought substrate using ELI grade wire with laser deposition (LWD) process. Characterization efforts led to evaluation hardness, tensile behavior, fatigue crack growth resistance build-up alloy. Microstructure deposit consists columnar prior β grains basket-weave α/β phase mixture. The size...