About this Abstract |
Meeting |
Advances in Welding and Additive Manufacturing Research 2022
|
Symposium
|
Advances in Welding and Additive Manufacturing Research 2022
|
Presentation Title |
Heat-affected Zone Liquation Cracking Evaluation on FeMnAl Alloys |
Author(s) |
Rafael Giorjao, Kaue Riffel, Katherine Sebeck, Antonio Ramirez |
On-Site Speaker (Planned) |
Rafael Giorjao |
Abstract Scope |
Across US Army ground vehicle platforms, weight continues to increase in response to changing conditions on the battlefield. Considered a possible alternative for the current high strength steels, FeMnAl steels take advantage of the density reduction promoted by additions of Al, while maintaining good mechanical properties such as high strength and high toughness. Despite the extensive mechanical performance and heat treatment exploration of this alloy class, further weldability investigation is required for future large-scale deployment. In the present study, the liquation cracking of four heats of cast FeMnAl alloys was investigated by spot-Varestraint technique. Optical and electron microscopy was employed to investigate the microstructural features and CALPHAD analysis to aid the discussion regarding the alloy's composition differences and their effect on the liquation cracking susceptibility. The study was able to identify that compositions with the higher Mn, C and lower Al presented the highest liquation cracking susceptibility. Conversely, composition presenting lower Mn, C, and Al showed the most resistant behavior. |
Proceedings Inclusion? |
Undecided |