About this Abstract |
| Meeting |
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
| Symposium
|
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
| Presentation Title |
(On-Demand) The Effect of Heat Input on Residual Stress Buildup in Selective Laser Melting of Ti6AL4V |
| Author(s) |
Londiwe Portia Motibane |
| On-Site Speaker (Planned) |
Londiwe Portia Motibane |
| Abstract Scope |
Residual stress in Selective Laser Melting is affected by several process parameters. High-speed Selective Laser Melting uses a high laser power to achieve fast scanning and therefore high heat input (laser power/laser scanning speed). In most commercial systems, lower heat inputs are attained in comparison. The residual stress build-up in both high heat-input and low heat-input systems was quantified to benchmark the residual stress in high-speed selective laser melting. Cantilever specimen deflections were similar with a spread of approximately l = 3.5mm. The very near surface stresses measured by XRD were much higher for high-speed SLM while the stress distribution as you move away from the very near surface up to 0,8mm in depth measured by hole-drilling, were similar for high heat-input and low heat-input SLM systems. The effect of heat input was found more apparent in the very near top surfaces and not as much in bulk stresses. |
| Proceedings Inclusion? |
Undecided |