| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Loading/Unloading Yielding Behavior in 304 Stainless Steel |
| Author(s) |
Melissa M. Thrun, Christopher Finfrock, Amy Clarke, Kester Clarke |
| On-Site Speaker (Planned) |
Melissa M. Thrun |
| Abstract Scope |
To make useful parts, forming operations have become increasingly complex, many of which include loading and unloading, bending and unbending, and a variety of different strain states and strain rates. One important factor in forming useful parts is the yield and flow stresses of the material, which ultimately dictate the loads and equipment required to make the part. In this study, interrupted testing of 304 stainless steel was performed to observe the effects of unloading, fully and partially, as well as differing the time between unloading and loading, on subsequent deformation. Upon reloading in all conditions, an increase in yield stress was observed. The magnitude of the increase varied both with time between unloading and reloading, and partial and full unload. The appearance of this yield point phenomena is attributed to strain aging and dislocation trapping mechanisms active in the matrix and presents a potential challenge for forming TRIP-aided materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Shaping and Forming, |