| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
2024 Graduate Student Poster Contest
|
| Presentation Title |
SPG-9: Surface Color Relation to Alpha Case Formation in Ti-6Al-4V |
| Author(s) |
William Voellmecke, Michaela von Schaumburg, Eric J Payton, Ravi Kumar |
| On-Site Speaker (Planned) |
Ravi Kumar |
| Abstract Scope |
Current welding standards that are applied to additive manufacturing for Ti-6Al-4V (Ti64) specify acceptable colors for a heat-treated specimen. The present work continues investigations into the conditions under which the surface oxide scale color provides an accurate indication of underlying oxygen content and/or alpha case depth – for example, if the color results from the final step in treatment or a culmination of the entire heat treatment process. 35 specimens were heat treated at four temperatures and a variety of times to assess the effect that heat exposure has on the color and near-surface oxygen content of the specimen. The relationship between mass gain, oxide thickness, and oxide color was characterized as a function of heat treatment time and temperature. It is anticipated that a model relating oxide thickness to heat treatment conditions will help improve standards for welding and additive manufacturing of Ti64 in the future. |