About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-60: Effects of Pore Geometry and Location on the Material Properties of Additively Manufactured Ti-64 |
Author(s) |
Connor Varney , Nicholas Telesz, Robert Nic Quammen, John Balk, Andrew Wessman, Paul Rottmann |
On-Site Speaker (Planned) |
Connor Varney |
Abstract Scope |
Additive manufacturing (AM) has seen large interest in recent years for the ability to print parts for immediate service. Thus far, there is tremendous difficulty in replicating the properties of conventionally manufactured metals due to complex processing conditions. This research focuses on analyzing and quantifying the differences of two batches of AM Ti-64 rods with measurably different properties that were printed under nominally the same conditions. The defects in these samples were characterized using optical and electron microscopy. Fatigue testing was performed on the samples, with results compared to other traditional and additive literature. It was found that lenticular pores were significantly more deleterious than spherical pores. Models predicting fatigue limits and stress intensity factors are also discussed. The research presented demonstrates that the percent porosity of AM metals alone is insufficient: the size, shape, and location of pores within the part are critical to adequately predict part properties. |
Proceedings Inclusion? |
Undecided |