| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Joining of Advanced and Specialty Materials XXI
|
| Presentation Title |
Impact Welding of Wrought vs. Additively Manufactured Ultra-high-strength Stainless Steel |
| Author(s) |
Bert Liu, Anthony Palazotto, Anupam Vivek, Glenn S Daehn |
| On-Site Speaker (Planned) |
Bert Liu |
| Abstract Scope |
Age-hardened 15-5 PH stainless steel can lose up to 20% of its strength during fusion welding due to thermal damage. This work addresses this problem by employing a low-heat welding technique called impact welding. Experimentation involved special workpieces which helped control the impact angle, which was a key process parameter. Both wrought (W) and additively manufactured (AM) 15-5 PH SS workpieces were used, all age-hardened to condition H900, the highest-strength condition of this material. Strong welds and favorable microstructures were obtained for both W and AM variants, with miniscule thermal damage. This capability can help eliminate the need for post-welding heat treatment, resulting in significant time and cost savings and new design possibilities. |