| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-18: Studying the Effects of Aging on the Structure and Properties of Off-eutectic Pb-Sn Solder Joints for In-space Applications |
| Author(s) |
Soren Hellyer, Caleb Ogden, Manish Kumar, Sid Pathak |
| On-Site Speaker (Planned) |
Soren Hellyer |
| Abstract Scope |
NASA is currently considering soldering for use in in-space joint repair. Soldering studies aboard the International Space Station (ISS) in 2003-04 were designed to better understand solder porosity development, surface wetting, and equilibrium shape formation in microgravity. But these investigations did not consider the effect of aging on the solder properties. Previous investigations have shown that 40wt%Pb-60wt%Sn alloys exhibit grain coarsening and reduced mechanical properties with age at room temperature.
In our current project, solder samples will be produced in microgravity and sent back to Earth for testing, including an off-eutectic 50wt%Pb-50wt%Sn composition. Understanding the effect of aging is critical to understanding the properties of new samples produced onboard the ISS, as samples will not be tested immediately. This work reports results from the microstructural characterization using scanning electron microscopy and nano-mechanical testing of 50wt%Pb-50wt%Sn solder produced in terrestrial environments as a function of age under room temperature conditions. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Joining, Mechanical Properties, Characterization |