| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Elevated Temperature Mechanical Properties of Diffusion Welded Alloy 617 Fabricated by Electric Field Assisted Sintering |
| Author(s) |
Xinchang Zhang, Michael McMurtrey, Tate Patterson, Ryann Bass, Andrew Gorman, Jorgen Rufner |
| On-Site Speaker (Planned) |
Xinchang Zhang |
| Abstract Scope |
Compact-type heat exchangers (CHXs) find applications in many energy and chemical processing systems. A critical aspect in diffusion-welded CHXs is to achieve bonded materials with superior elevated-temperature mechanical properties comparable to the base metal. This study investigated Alloy 617 diffusion-welded by the use of intense electric current through electric field assisted sintering (EFAS) and revealed the high-temperature mechanical behaviors of the welded stack. Diffusion welding of over 80 Alloy 617 sheets with dimensions of 216 × 216 × 1.35 mm3 were accomplished by EFAS under pressure of 30MPa at 1025°C for 45 minutes. Grain morphology, precipitation, and grain boundary migration across the diffusion welding interfaces were characterized. Elevated-temperature mechanical behaviors of the welded stack were investigated by tensile, creep, and creep-fatigue testing at various conditions. The mechanical properties of the Alloy 617 joined by EFAS were compared to those of the base material and material diffusion-welded by hot pressing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Joining, Mechanical Properties |