| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
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| Presentation Title |
The Coupled Effect of Temperature and Electric Field on Diffusion Welding of Alloy 617 via Electric Field Assisted Sintering |
| Author(s) |
Xinchang Zhang, Jorgen F. Rufner, Michael D. McMurtrey, Ryann E, Rupp |
| On-Site Speaker (Planned) |
Xinchang Zhang |
| Abstract Scope |
The application of stress, elevated-temperature, and electric field during electric field assisted sintering (EFAS) may offer unique benefits as a diffusion welding (DW) method. In comparison with conventional hot pressing (HP), this study investigated the effect of temperature and electric field during EFAS of Alloy 617 sheet material. DW of Alloy 617 was conducted using three different techniques: HP where only heat and pressure were applied, standard EFAS with electric current flowing partially through the die and sample, and flash EFAS with current flowing solely through the sample. Scanning electron microscopy reveals that different microstructures were generated for HP, standard EFAS and flash EFAS. Electric current plays a significant role in precipitation and grain boundary migration across the interface. Coupled with correct temperatures, the increase of current passing through the sample was found to improve grain boundary migration. The scale up of EFAS to industrially relevant size is also investigated. |