About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
Presentation Title |
Improving the Corrosion Performance of Additively Manufactured 316L via Optimized SLM Processing Parameters |
Author(s) |
Joseph Sopcisak, Steven Storck, Rengaswamy Srinivasan, Morgan Trexler |
On-Site Speaker (Planned) |
Joseph Sopcisak |
Abstract Scope |
Due to the complex thermal profiles associated with consolidation of material on small length scales, additive manufacturing (AM) has many advantages over conventional manufacturing methods such as the ability to produce free-form complex shapes and materials with unique properties. Nevertheless, the implementation of AM into corrosive environments is ultimately limited by the reduction in corrosion performance of AM parts when compared to their conventionally manufactured counterparts. Improving the corrosion resistance of AM parts can be unlocked with precise control of machine parameters. In this effort, laser parameters were adjusted to optimize corrosion performance. Laser power, speed, point distance, and hatch spacing were systematically varied in a laser powder bed fusion (L-PBF) system and were consolidated via selective laser melting (SLM) to establish which parameters influenced pitting performance. Samples showed clear evidence relating laser process parameters to grain structure, meltpool boundaries, and their role in nucleation and growth of pitting corrosion. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |